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Ministry of Energy Mines and Responsible for Core Review

GSB Publications Release Notifications for 2007-2005 

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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2007-6

October 17, 2007

FOR IMMEDIATE RELEASE

For many years the BC Geological Survey, jointly with the Geological Survey of Canada, has been carrying out regional geochemical drainage surveys across the province using a variety of sample types and collection techniques. The primary objective is to assist prospectors and companies to locate new mineral occurrences. Stream sediment sampling is the most commonly used method to identify areas of high mineral potential but collecting moss-sediment; lake-sediment and heavy minerals are also useful techniques help locate hidden ore deposits.

This publication contains the material presented at the recent ‘Exploration 2007’ workshop in Toronto, and presents different drainage sampling methods, and shows their usefulness in regional exploration for base and precious metals.

GeoFile 2007-6
Workshop Notes: Drainage Geochemical Surveys -
Stream sediment, Lake sediments, Moss Mats, Heavy Minerals

by Ray E. Lett

Available from:

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2007-6.aspx

British Columbia is suited for using drainage geochemistry to find new mineral resources. As a result the British Columbia Geological Survey started a regional stream sediment and stream water geochemical survey (RGS) in 1976 as part of the Geological Survey of Canada National Geochemical Reconnaissance Program. This survey now covers about 70 percent of the province with field and analytical data from the collection and analysis of over 50 000 stream sediment, lake sediment and surface water samples.

Geofile 2007- 6 contains the slides and notes presented as part of a workshop titled “Exploration Geochemistry – Basic principals and Concepts” given as part of Exploration 07, the 5th Decennial International Conference on Mineral Exploration, Toronto, Canada. The presentation aimed to illustrate examples of the survey techniques such as the design, sampling methods for stream sediment, water, lake sediment moss sediment and heavy minerals in addition to quality control procedures, sample preparation and sample analysis.

Lett, R.E.W. (2007): Drainage sampling in British Columbia – stream sediments, lake sediments, water and heavy mineral concentrates; In Exploration Geochemistry – Basic Principals and Concepts; Workshop 2 Notes (Convenor - William B. Coker); Exploration 07 the 5th Decennial International Conference on Mineral Exploration, Toronto, Canada, 46 pages.


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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2007-5

June 6, 2007

 

Southern British Columbia, and particularly the Boundary District, has had a long and productive history for mining and has contribued substantially to the economic welfare of the province over the years.  As part of the BC Geological Survey geoscience program of mapping and mineral deposits studies we are releasing a new map of the Rock Creek area, located east of Osoyoos, which will help explain in a modern context, the geology of the region and shed new insight on its mineral potential.

 

Open File 2007-7
Geology and Mineral Deposits of the Rock Creek Area
NTS 082E/2W; 082E/03E
1:25 000 scale (hard copy price $20. from Crown Publications)
Mapping and compilation by N.W.D. Massey

 

This new geological map builds on and expands westward, the studies by Fyles of pre-Tertiary rocks in the Greenwood area (1990).

The map covers an area centred on the Kettle River Valley extending from the Washington state border to Westbridge. Paleozoic rocks, south of Highway 3, belong to the Anarchist Schist, comprising quartzite (meta-chert), argillaceous quartzite, quartz-chlorite and quartz-biotite schists, massive and tuffaceous greenstones. A white dolomite unit, south of Rock Creek, is being exploited at the Mighty White Mine but its relationship to other units is somewhat enigmatic. Minor barite in meta-argillites is an exploration target in the Budy Creek area.

The Paleozoic rocks, north of Highway 3, belong to the Devonian to Permian ophiolitic Knob Hill Complex. Serpentinite and gabbro are overlain by massive, pillowed and volcaniclastic greenstones and well-bedded to ribboned cherts and argillites. Listwanite alteration of serpentinite has resulted in some anomalous gold. The Knob Hill Complex and Anarchist Schist are separated by a postulated thrust, which is the continuation of the Mt Attwood and Lind Creek faults of the Greenwood area. Middle Triassic sharpstone conglomerate and limestone of the Brooklyn Formation overlie both Paleozoic sequences. All pre-Tertiary rocks can be host to Tertiary epithermal quartz veins, though few have yet proved to carry gold.

Files may be downloaded from:
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2007/Pages/2007-7.aspx

OF2007-7-Rock-Creek.pdf (Adobe PDF file 6.6Mb)
OF2007-7-Rock-Creek.map (MANIFOLD GIS digital file 6Mb)
 

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All BC Geological Survey geoscience publications were previously available from Crown Publications Inc.  As of 2012, all publications of the BC Geological Survey are available digitally, free of charge, from this website.


For questions about these publications or general information on geology and minerals in British Columbia, or about BC Geological Survey Publications please contact:

BC Geological Survey,
Mining and Minerals Division
Ministry of Energy, Mines and Petroleum Resources
PO Box 9333, Stn Prov Govt,
Victoria, B.C., V8W 9N3.
Tel: (250) 952-0454 Fax: (250) 952-0381

 

Note: many new products, as well as older maps and reports, are available free of charge as digital files from the BC Geological Survey website. Most can be accessed by browsing the 'GSB Catalog of Publications', but many are also linked to various thematic pages at: http://www.em.gov.bc.ca/Mining/Geoscience/Pages/default.aspx

The BC Geological Survey is constantly adding documents and information to this site.  Most provincial geoscience data and other information can be easily accessed through out MapPlace website at:  http://www.mapplace.ca/

 


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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2007-4

May 28, 2007

 

The British Columbia Geological Survey has been carrying out geoscience studies in the area of central British Columbia, impacted by the Pine Beetle, over the past several years.  This is an ongoing regional program of geological mapping and mineral deposit studies.  The region has a very successful history of prospecting, mining and mineral exploration in some areas, and has significant mineral potential but is considered to be under-explored.  The following new geological maps and reports are a contribution to the province's geoscience database and will help to identify new areas of interest for mineral exploration in central B.C.

 

Open File 2007-3
Geology of the Hendrix Lake Area
NTS 093A/02
by Paul Schiarizza and Jenny Macauley

 

Files may be downloaded from:
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2007/Pages/2007-3.aspx

 

The Hendrix Lake map area covers about 800 square kilometres within the Quesnel Highland of south-central British Columbia.  This new geological map is based on fieldwork conducted during 2006 which is part of a larger program.  The map area is underlain mainly by sedimentary, volcanic and volcaniclastic rocks of the Middle to Late Triassic Nicola Group, together with Late Triassic to Early Jurassic ultramafic to granitic plutonic rocks, including the eastern part of the Takomkane Batholith.  These rocks are part of the Quesnel magmatic arc, which hosts the Afton and Mount Polley porphyry Cu-Au deposits to the south and north, respectively.  The map area also includes Late Paleozoic mafic schists of the Crooked amphibolite (Slide Mountain Terrane), Proterozoic and/or Paleozoic metasedimentary rocks of the Snowshoe Group (Kootenay Terrane), stocks of Cretaceous granite, and small exposures of Quaternary basalt.  Many of the mineral occurrences located within the map area are associated with Cretaceous granitic rocks.  These include the past-producing Boss Mountain porphyry molybdenum deposit, tungsten-molybdenum skarns, and gold-bearing shears and vein systems.

 

Open File 2007-6
Part of an Economic Diversification Initiative by the Province of B.C., which aids Communities affected by the Mountain Pine Beetle.
1:50 000 scale map
by Mitchell G. Mihalynuk and Leslie L. Harker

 

Files may be downloaded from:
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2007/Pages/2007-6.aspx

 

Pine forests extend across much of the interior plateau of southern British Columbia where they are the principal commercial tree species. These forests are infested by the Mountain Pine Beetle, and it is estimated that by 2016 less than ~10% of the already diminished 2006 volume of pine will be left standing. Economic welfare of the many forestry-dependent communities in the Beetle Infested Zone (BIZ) will be severely impacted. Anticipating an economic downturn in the forestry sector, the Provincial Government is supporting economic diversification throughout the region via stimulation of other industries. Work presented in Open File 2007-6, Riske Creek Geology, is a part of that provincial effort, and is aimed at stimulating new jobs in the high-paying mineral exploration industry.

Centered approximately 30 km southwest of Williams Lake, the Riske Creek area is part of the Interior Plateau where it is dissected by the Fraser River. It is underlain by oceanic crustal, and sedimentary rocks of the Cache Creek complex, and Eocene felsic volcanic strata. Poorly lithified gravel, basalt hyaloclastite and lavas of the Chilcotin Group mantle the older rocks. Regional geochemical stream sediment data from the area are elevated in copper (94th percentile), zinc (96th percentile), and gold (>99th percentile), with respect to the remainder of the 50 000 samples collected throughout the province. As a consequence, this area was chosen for additional sampling and geological mapping.

Open File 2007-6 presents a new version of the geology of this important area, covering about 200 km2. It outlines belts of carbonate, serpentinite and basalt not previously recognized on earlier geological maps. Geochemical data are available as part of Geofile 2007-5.
 

GeoFile 2007-5
Results of Reconnaissance Surveys in the Interior Plateau Beetle Infested Zone (BIZ)
by Mitchell G. Mihalynuk and Leslie L. Harker, Ray Lett and Brian Grant

 

Files may be downloaded from:
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2007-5.aspx

 

Geofile 2007-5 is part of an economic diversification initiative by the Province of BC, which aids communities affected by the Mountain Pine Beetle.

Pine forests extend across much of the interior plateau of southern British Columbia where they are the principal commercial tree species. These forests are infested by the Mountain Pine Beetle, and it is estimated that by 2016 less than ~10% of the already diminished 2006 volume of pine will be left standing. Economic welfare of the many forestry-dependent communities in the Beetle Infested Zone (BIZ) will be severely impacted. Anticipating an economic downturn in the forestry sector, the Provincial Government is supporting economic diversification throughout the region via stimulation of other industries. Work presented in Geofile 2007-5 is a part of that provincial effort aimed at stimulation new jobs in the high-paying mineral exploration and mining industries.

Reconnaissance field studies conducted during 2006 as part of the BIZ Project were aimed at optimizing the design of future BC Geological Survey field programs within the BIZ. A principal objective of the project is to demonstrate how application of conventional and non-conventional exploration techniques can be successfully applied to large tracts of the BIZ, and how geoscientific information can best benefit British Columbians living within the BIZ.

 

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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2007-3

April 27, 2007

 

The British Columbia Geological Survey has been doing geoscience studies in the Terrace area over the past several years. This is an ongoing program of geological mapping and mineral deposits studies. The Terrace area, with a history of prospecting, mining and mineral exploration, is known to have significant mineral potential but is considered to be under-explored. The following geological maps and reports are a contribution to the province's geoscience database and will help to identify areas of interest for minerals exploration. In addition, the new "Terrace Geotour Guidebook" is designed to make the public more aware of the interesting aspects of the geology in the Terrace region.

 

Open File 2007-4
Geology of Terrace area, British Columbia
NTS 103I 9, 10, 15, 16
by J.L. Nelson, R. Kennedy, J. Angen and S. Newman

 

Files may be downloaded from:
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2007/Pages/2007-4.aspx

 

This map covers the area north of Terrace, BC, from Kitsumkalum Lake to the mountains east of the Skeena River. It incorporates and builds on Open File 2006-3 (Usk map area), adding geological and assay data collected during the 2006 field season. The area includes extensive volcanic exposures of the Lower Jurassic Hazelton Group, overlain by strata equivalent to the Salmon River (Troy Ridge facies) in the Iskut area, that form a distinct siliceous interval below the base of the Bowser Lake Group. Jurassic and Eocene plutons are host to precious metal veins and copper and molybdenum porphyry mineralization. The area has a core consisting of a major Paleocene-Eocene uplift of metamorphosed Hazelton Group strata and deformed ca 60 Ma plutons. Regional rock relationships shown on the map suggest that this was a footwall panel below an earlier (Cretaceous?) northeast-vergent thrust fault. Hanging wall strata are exposed east of the Skeena River.
 

GeoFile 2007-10
Terrace Geotour Guidebook
Authors & Contributors: B. Turner, J . Nelson , G. Weary, T. Walker, B. Hayward, C. McRae
British Columbia Geological Survey
Geological Survey of Canada
Northwest Community College, Terrace

 

Files may be downloaded from:

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2007-10.aspx

 

This, NEW, Geotour guide for Terrace, BC, puts a rich source of local earth-science information in the hands of teachers, prospectors, students, visitors and interested residents. The 15 stops described in this lively guidebook take the reader through the bedrock and glacial history of the Terrace area, natural hazards, recent events in geological history such as the 250 year old Nass basalt eruption and the joys of the deeply-sourced Lakelse hotsprings. It also shows how the community depends on earth resources like sand and gravel and sources of clean water; and how the earth accommodates waste materials.

 

Terrace's interesting mining history is highlighted by a stop at Heritage Park. Colour illustrations and clear directions aid in communicating this fascinating earth story.

 

Open File 2007-5
Volcanology, Petrography, and Geochemistry of the Kitselas Volcanic Rocks Compared to Rocks of the Telkwa Formation, Northwestern British Columbia

by Nicole T. Boudreau

Files may be downloaded from:

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2007/Pages/2007-5.aspx

 

The Lower Jurassic Kitselas volcanic sequence of the Hazelton Group is located within the Intermontane Stikine Terrane in the western part of the Usk map-area in north-western British Columbia. It is surrounded by intrusive units to the north and south and by Hazelton Group volcanic rocks of the Telkwa Formation to the east. Telkwa and Kitselas rocks are coeval in age; however, the primary relationship between the two map units is enigmatic due to a structural contact and differences in composition and metamorphic grade. The objective of this report was thus to characterize the Kitselas volcanic rocks in terms of volcanology, petrography, and geochemistry and to use this data to determine the primary relationship between Kitselas and Telkwa rocks. The field and petrographic characteristics are consistent with a model wherein the Kitselas volcanic rocks comprise the foot-wall of a detachment fault system, which includes the Usk Fault. The geochemical characteristics of the Telkwa and Kitselas volcanics indicate that rocks from both of these map units are part of a volcanic arc calc-alkaline suite and their trace element similarities indicate that they are genetically related.

 

This Open File report with illustrations is a thesis submitted to Saint Mary's University, Halifax, Nova Scotia in partial fulfillment of the requirements for the degree, Bachelor of Science, Honours, Dept of Geology. The field work was carried out as part of an ongoing geoscience project in the Terrace region by the BC Geological Survey.

 

 

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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Information Notice

April 4, 2007

PARTNERING FOR DIVERSIFICATION IN THE NECHAKO BASIN

VICTORIA – The Province has provided $200,000 in funding to the University of Victoria for research to increase the understanding of the geology, mineral, and oil and gas potential in the Nechako Basin, an area heavily infested by the mountain pine beetle, Energy, Mines and Petroleum Resources Minister Richard Neufeld and UVic vice president research Martin Taylor announced today. “This research will help adapt and expand economic activity in the area into new ventures that provide well-paying jobs for workers and families,” said Neufeld.

“Partnerships with organizations such as the University of Victoria help us to achieve our goal of creating more jobs per capita than anywhere else in Canada.” “The University of Victoria greatly appreciates this new funding and welcomes the opportunity to continue its productive partnership with the Province on issues where our research expertise can be applied for the economic benefit of B.C.,” said Taylor.

The funding will support geoscience projects that will increase the understanding of the mineral and petroleum potential of the Nechako Basin. This area of British Columbia is covered by glacial tills and young volcanic flows that have made exploration in the region difficult. The possibility of finding mineral deposits is high, as similar deposits are found under these formations in other areas. As other research activities engaged in by organizations such as the Geological Survey of Canada, Geoscience B.C., and other universities are underway in this region, applicants must establish that they are not duplicating or overlapping with existing projects.



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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2007-2

April 2, 2007


GeoFile 2007-09 (poster and data files available for download)
Nuggets Buried in the BC Regional Geochemical Survey Database

 

Stream sediment and water sampling covers much of British Columbia and the multi-element geochemical data generated from the reconnaissance scale surveys helps locate hidden ore deposits.  This poster and accompanying text highlights new gold exploration targets that have been identified by interpreting regional stream sediment survey geochemistry.  Geofile 2007-09 also contains new data from the analyses of rock samples collected during geochemical surveys in the Lillooet area.

GeoFile 2007-09 (Poster available for download as a pdf document)

For recent results pertaining to regional geochemical surveys also see:
by Lett, R.E. W and Bluemel, B (2007) Multi-media Geochemical Surveys in the Lillooet and McLeod Lake Map Sheets (NTS 092O and 093J); in Geological Fieldwork 2006, BC Ministry of Energy, Mines and Petroleum Resources, Paper 2007-1.

 

GeoFile 2007-08 (poster and data files available for download as a pdf document)
Review of Industrial Minerals in British Columbia, Canada - 2006


Industrial minerals are an increasingly significant component of international trade and British Columbia is strategically located on the west coast of North America to access many of these markets. It has a well-developed transportation and industrial infrastructure in the southern third of the province, deep-water ports and a well maintained all-weather highway system. Rail lines link British Columbia's industrial centers to terminals across Canada and United States. Nonmetals are not affected by economic cycles to the same extend as metals. Over the last fifteen years this sector offered a steady growth and its value has doubled. During this period most nonmetals have became international travelers.

British Columbia's construction aggregate and industrial mineral production for 2006 is estimated at $676 million. Cement is projected to account for $324 million, sand and aggregate for $192 million and stone for $78 million. The projected value of all other industrial minerals combined is $82 million, with sulphur being the major component.

File may be downloaded from:
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2007-8.aspx

Reference:  Simandl, G.J., Irvine, M.L, Grieve, D., Lane, R., Wojdak, P., Madu, B., Northcote, B., and Schroeter, T. (2007): Industrial Minerals of British Columbia 2006 ; British Columbia Ministry of Energy, Mines and Petroleum Resources; Geofile 2007-8, poster

Most provincial geoscience data and other information can be easily accessed through our MapPlace website at:  www.MapPlace.ca

 

 

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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2007-1

January 26, 2007


 

NEW British Columbia GEOSCIENCE PRODUCTS
available over the internet and at Mineral Exploration Roundup, Vancouver, January 2007:

 

Geological Fieldwork 2006: A summary of Fieldwork and Current Research – Paper 2007-1

 

The British Columbia Geological Survey (BCGS) presents the results of 2006 geoscience surveys and studies in this thirty-second edition of Geological Fieldwork. This year it contains 44 individual reports in 403 pages. Most of the articles within the first half of this volume are contributions from BC Geological Survey staff who have worked extensively throughout the province on its geology, geochemistry and mineral deposits.  Articles in this volume include reports on British Columbia Geological Survey programs in the Smithers-Hazelton, Canim Lake, Rock Creek, northeast coalfield, northern Vancouver Island and Terrace areas.

 

The second part of this volume consists of articles provided by Geoscience BC, an industry-focused, not-for-profit society that works with industry, academia, government, First Nations and communities to attract mineral and oil and gas investment to British Columbia. These articles span a wide spectrum from geochemical and geophysical surveys and mineral deposit studies to new exploration tools.

 

The volume is available over the internet at:  http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/Fieldwork/Pages/GeologicalFieldwork2006.aspx

 


British Columbia Mines and Mineral Exploration Overview 2006

By Tom Schroeter, David Grieve, Robert Lane, Bruce Madu, Bruce Northcote and Paul Wojdak

 

A total of $265 million is estimated to have been spent on mineral exploration in the Province during 2006.  This annual publication provides an overview of the mines, more than 20 mine development projects and mineral exploration activities in the Province of British Columbia. Ministry geologists using information provided by government, companies and individuals in the British Columbia mining industry compile the publication. It contains detailed statistical tables and illustrations, in addition to location maps and tables summarizing the significant mining, exploration and development projects.

 

The volume is available over the internet at: 

http://www.empr.gov.bc.ca/Mining/WhatsNew/Documents/EX-REVIEW_IC2007-1.pdf (PDF 2.5MB)

 

 

Exploration and Mining in British Columbia 2006
By David Grieve, Robert Lane, Bruce Madu, Bruce Northcote, Tom Schroeter, and Paul Wojdak

 

This annual publication provides detailed regional reviews of mining, mineral exploration and development activities in British Columbia for 2006. As well, it also includes a copy of the provincial overview article (Information circular 2007-1). Regional Geologists in the Mining and Minerals Division of the Ministry compile the report using information provided by government, companies and individuals in the British Columbia mining industry compile the publication. It contains detailed statistical tables and illustrations, in addition to location maps and tables summarizing significant mining, exploration and development projects in the province.

 

The volume is available over the internet at:  http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/ExplorationinBC/Pages/BC2006.aspx

 

 

Operating Mines and Selected Major Exploration Projects in British Columbia - 2006
By Tom Schroeter and Eric Man

 

This poster-style map depicts all of the metal, coal and industrial minerals operations in the Province during 2005, in addition to all of the significant mineral exploration programs across the province.

The volume is available over the internet at:  http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2007/Pages/2007-1.aspx

 

Communities Benefiting from BC Mineral Exploration Activity – 2006
By Tom Schroeter and Eric Man

 

This map illustrates the benefits of mineral exploration investment on specific communities across the province in terms of jobs, projects and dollars spent in the search for new mines. The map details the impacts of $265M of exploration activity which created more than 4000 seasonal and 600 permanent jobs.

The volume is available over the internet at:  http://www.em.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2007/Pages/2007-2.aspx

 

 


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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2006-6

August 11, 2006


 

The British Columbia Geological Survey has completed extensive geological mapping and mineral deposits studies on northern Vancouver Island over the last decade. This is an ongoing program of mapping and mineral deposits studies.  Northern Vancouver Island, and particularly the Quatsino Sound area, is richly endowed in mineral occurrences, has had a successful mining history, such as the former Island Copper mine. The region also has numerous mineral occurrences, some of which are under-explored but with excellent potential. The release of these three 1:50 000-scale Geoscience Maps covers an area extending from Winter Harbour - San Josef Bay on the west coast to Port Hardy - Port McNeill on the east coast, an area encompassing NTS sheets 102I/8, 9 and 92L/6, 11, and 12.

 

Geoscience Map 2006-1:
Geology of the Alice Lake Area, Northern Vancouver Island
by G.T. Nixon, G.J. Payie, L.D. Snyder, S. Long, A. Finnie, R.M. Friedman, D.A. Archibald, M.J. Orchard, T. Tozer, T.P. Poulton, J.W. Haggart and K.A. Johnston

 

Geoscience Map 2006-2:
Geology of the Quatsino - Port McNeill Area, Northern Vancouver Island
by G.T. Nixon, G.J. Payie, L.D. Snyder, S. Long, A.Finnie, R.M. Friedman, D.A. Archibald, M.J. Orchard, T. Tozer, T.P. Poulton, J.W. Haggart and K.A. Johnston

 

Geoscience Map 2006-3:
Geology of the Holberg - Winter Harbour Area, Northern Vancouver Island
by G.T. Nixon, J.L Hammack, V.M. Koyanagi, G.J. Payie, L.D. Snyder, A. Panteleyev, J.W. Haggart, N.W.D. Massey, M.J. Orchard, D.A. Archibald, R.M. Friedman, T. Tozer, H.W. Tipper, T.P. Poulton, J. Palfy, F. Cordey, D. J. Barron and K.A. Johnston

 

The area is underlain by a folded and faulted sequence of Upper Triassic to Middle Jurassic volcanic and sedimentary rocks of the Vancouver and Bonanza Groups intruded by granitoids of the Island Plutonic suite. The latter rocks are associated with important calcalkaline Cu-Mo-Au porphyry, and base and precious-metal skarn and epithermal mineral occurrences. Cretaceous marine clastic and Tertiary volcanic-sedimentary strata with lower mineral potential overlie the Triassic-Jurassic rocks.

 

These geoscience maps provide a new stratigraphic framework for the Early Mesozoic sequences, calibrated by 40Ar/39Ar and U-Pb isotopic dating and macrofossil and microfossil (conodont and radiolarian) faunas. The Bonanza group now includes the Upper Triassic Parson Bay Formation, which contains mapable volcanic/volcaniclastic horizons, overlain by unnamed volcaniclastic-sedimentary strata of uppermost Triassic to lowermost Jurassic age, in turn succeeded by Lower to Middle Jurassic, predominantly volcanic and volcaniclastic sequences of the informally named LeMare Lake volcanics, formerly "Bonanza volcanics". The latter term is usefully retained for all volcanic lithologies within the Bonanza Group, which spans some 40 million years of magmatic arc evolution from the Late Triassic (Carnian) to the Middle Jurassic (Bajocian).  

 

 

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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2006-5

July 7, 2006

 

Regional Geochemical Surveys are an important part of the provincial geoscience database. This data, collected by the BC Geological Survey over the last quarter century is available free for industry, government and public use through the Ministry of Energy, Mines and Petroleum Resources website. Surveys funded by Geoscience BC during 2005 will also be available through the Ministry website.

 

FOUR NEW GEOCHEMICAL DATA RELEASES -

July 14th, 2006,  10:00 am Release Date:

Stream sediment samples collected in 1985 by the BC Geological Survey over the McLeod Lake area north of Prince George, British Columbia have been re-analyzed by a more sensitive technique for gold and other trace elements. The results will assist geologists and mineral industry companies to focus exploration on new targets and will assist governments and interested parties with land use planning.

 

 

GeoFile 2006-09
Re-analysis of Regional Geochemical Stream Sediment Samples
from the McLeod Lake area
(NTS 93J)
By Ray Lett and Britt Bluemel

Digital Data and Report are available from:
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2006-9.aspx 

Geofile 2006-09
reports new gold and trace metal data from the re-analysis of archived regional geochemical survey samples from the McLeod Lake (NTS 93J) map sheet. Up to 147 ppb gold in sediment was detected from an area underlain by Takla rocks. This digital release consists of a report in PDF format, and appendices in a ZIP format file.

Previous exploration in the McLeod Lake area has been hampered by a thick glacial sediment blanket. There are 25 reported mineral occurrences which include 6 gold and 2 copper showings. Part of the map sheet is underlain by Triassic Takla Group rocks that can host significant porphyry gold-copper deposits, such as that at Mount Milligan immediately west of the area. In 1985 a regional geochemical survey produced trace element data from the analysis of 1152 stream sediments and 940 water samples taken from 1088 sites over a 14 500 km2. The sediment samples were originally analyzed for 19 trace elements

 

including copper, lead, zinc, uranium, fluorine, barium, tin and tungsten. They were also analyzed for loss on ignition (LOI). The samples were re-analyzed this year for 37 elements including gold by aqua regia digestion - inductively coupled plasma mass spectrometry (ICP/MS).

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Stream sediment analyses, from several regional geochemical surveys, carried out by the BC Geological Survey in the Bella Coola area of coastal British Columbia have been compiled into a single file for convenience and to accompany 2006 geological map product releases from the Geological Survey of Canada and the BC Geological Survey. These multi-element data can assist geologists and mineral industry companies in identifying prospective exploration areas for new mines.

 

 

GeoFile 2006-10
Compilation of Regional Geochemical Survey Data from the Bella Coola Area

(NTS 93D/01, /02, /06, /07, /08, /09 /10/11/12/14/15, 93C/04, /05, 93E/02 /03)
By Ray Lett and Britt Bluemel

Digital Data and Report are available from:
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2006-10.aspx

Geofile 2006-10 presents analytical data compiled from regional geochemical surveys in the Bella Coola
(NTS 93D), Whitesale Lake (93E) and Anahim Lake (93C) map sheets, which were released previously. This digital release consists of a report in PDF format, and appendices in a ZIP format file. 

The Bella Coola-Whitesale Lake area is underlain by Mesozoic Hazelton Group, Coast Complex plutonic rocks and Cretaceous-Tertiary intrusive rock and has the potential for volcanogenic massive sulphide (VMS) mineralization, precious metal vein and Cu-Mo porphyry deposits. A compilation of geoscience information for the Bella Coola area will be published by the Geological Survey of Canada in cooperation with the BC Geological Survey. This geochemical Geofile data product comprises analyses of 790 samples for 17 trace elements, loss on ignition (LOI) and stream water pH extracted from BC Regional Geochemical Survey reports 56 and 16 and these data have been combined into a single file for convenience. Elements selected were determined by similar analytical methods in the two surveys. Element variations across the area are shown as symbol maps.

 

 

REMINDER - Geoscience BC

July 7, 2006, 10:00am  RELEASE DATE

 

The results of Geoscience BC funded, drainage sediment - water surveys carried out in the Anahim Lake area of the Nechako Plateau, British Columbia area are reported. These new data will help focus exploration by geologists and mineral industry companies on new targets in a relatively unexplored part of the province.

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GEOSCIENCE BC Report 2006-4
MEMPR GeoFile 2006-11

Regional Drainage Sediment and Water Geochemical Data,
Anahim Lake and Nechako River, British Columbia
 

(NTS Map Sheets 93C and F)
By W. Jackaman

Digital Data and Report are available from: 
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2006-11.aspx

Geoscience BC Report 2006-4/ MEMPR Geofile 2006-11 reports new regional geochemical drainage sediment – water survey data from the Anahim Lake (NTS 93C) and Nechako River (93F) map sheets. This digital release consists of a survey summary, data listings, statistics and maps in PDF format, plus appendices containing raw data and GIS importable shape files.

There are over 60 base and precious metal occurrences in the Anahim Lake - Nechako River map sheets including several such as the 3T’s and Clisbako, which have extensive exploration history. However, exploration for new deposits has been hampered by widespread glacial sediment and Miocene lava cover. During 2005 a total of 2070 drainage sediment and water samples were collected from 1957 sites covering 19 500 square kilometres. Most of the samples were taken from lakes and analysed for trace and minor elements by instrumental neutron activation and by aqua regia digestion - inductively coupled plasma mass spectrometry (ICP/MS), for loss on ignition (LOI) and for fluorine. Water samples were analysed for pH, conductivity and fluoride. Survey data has been combined with the results of two previous lake sediment and water geochemical surveys completed near the Fawnie Range and around Ootsa Lake. Gold values up to 694 ppb and copper up to 1536 ppm have been detected in sediment samples.

 


Geoscience BC

July 14th, 2006,  10:00am Release Date:

 

The results of Geoscience BC funded, drainage sediment - water surveys carried out in South-Eastern British Columbia are reported. These new data will focus exploration on new targets and assist governments and interested parties with land use planning.

 

 

Geoscience BC Report 2006-5
MEMPR GeoFile 2006-12  

Regional Geochemical Survey of South Eastern British Columbia

(NTS Map Sheets 83C, D, E and 82N)

By  C.O. Naas

 

Digital Data and Report are available from:
http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2006-12.aspx

Geoscience BC Report 2006-5/ MEMPR Geofile 2006-12 reports results of regional geochemical drainage sediment – water surveys in the Golden
(NTS 82N), Brazeau River (83C), Canoe River (83D) and Mount Robson (83E) map sheets. This digital release consists of reports in PDF format, and appendices in a ZIP format file.

Most of the known base and precious metal occurrences are in the Golden map sheet although much of the remaining survey area has a higher potential for metallic and industrial mineral deposits. During 2005 stream sediment and water samples were collected from 1409 sites covering 21 560 square kilometres in southeastern BC. The samples were analysed for trace and minor elements by instrumental neutron activation and by aqua regia digestion - inductively coupled plasma mass spectrometry (ICP/MS), for loss on ignition (LOI) and for fluorine. Water samples were analysed for pH, conductivity and fluoride. Gold values up to 357 ppb and silver up to 1747 ppb were detected in sediment samples from the surveys.

 

 

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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2006-2

April 1, 2006

 

All new and historic geoscience publications can be directly accessed through the Ministry website at:

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/Pages/default.aspx

 

NEW British Columbia GEOSCIENCE MAP PRODUCTS
Available April 2006


These new geoscience map releases are available and contain geological and geophysical information for the Iron Mask, immediately south of Kamloops, mapping in the Whitesail Lake area of northcentral BC, the most recent mapping in the northern part of the Toodoggone mining camp and a new geological map of the Canim Lake area of east-central BC just south of the Mt Polley deposit. These new geoscience products provide the latest information on the setting and geological context of important gold, porphyry Cu-Au and VMS settings in British Columbia and should attract attention to the mineral potential of these areas.

 

These products will be available as free, digital downloads from the Ministry website or hardcopy versions may be purchased through Crown Publications Inc, in Victoria.

 

 

Geology of the Iron Mask Batholith, Southern British Columbia
Open File Map 2006-11
Mapping and Compilation by James M. Logan and Mitchell G. Mihalynuk, BC Geological Survey
Geochronology by Thomas Ullrich and Richard Friedman, University of British Columbia

Hardcopy Price $15.00 1:25 000-scale mapsheet (NTS 92I/09 and 10)

This new geological map provides new insight into the geology, geochronology and mineral potential of the Iron Mask Batholith in the Kamloops region of southern British Columbia.  It presents the results of new mapping and a compilation of University  and private industry research designed to clarify the copper-gold metallogeny of the batholith. Past metal production from the batholith includes the Afton copper-gold-silver-PGE bearing deposit. Delineation of additional reserves and a likely return to production by New Gold Resources makes correlative rocks important exploration targets throughout the batholith and underlines the potential for new discoveries and mines in the area.

 

The Iron Mask survey was delivered with support from the Rocks to Riches (AMEBC) program and Geoscience Partnerships developed between Abacus Mining and Exploration, Imperial Metals Corporation and Nova Gold Corporation to study alkaline porphyry copper-gold deposits.



Integrated Airborne Geophysical Geology and Mineral Occurrence Data,
Iron Mask Batholith, Southern British Columbia

Open File Map 2006-12 (for release April 17, 2006)
Compiled by James M. Logan, Mitchell G. Mihalynuk (BC Geological Survey) and Carmel Lowe (Geological Survey of Canada)

Hardcopy Price $50.00 1:25 000-scale mapsheets (NTS 92I/09 and 10)

Sheet 1 – Aeromagnetic Anomaly Map
Sheet 2 – Vertical Magnetic Gradient Map
Sheet 3 – Horizontal Magnetic Gradient Map
Sheet 4 – Potassium Map
Sheet 5 – Thorium Map
Sheet 6 – Uranium Map
Sheet 7 – Thorium/Potassium Map
Sheet 8 – Uranium/Potassium Map
Sheet 9 – Uranium/Thorium Map

This product comprises 3 magnetic and 6 radiometric parameters, geo-referenced and displayed on separate 1: 25 000 scale sheets with geological contacts and major mineral occurrences shown. The map area corresponds to Open File Map 2006-11, Geology of the Iron Mask Batholith. The geophysical data represents a subset of the 1995 Iron Mask survey completed by the Geological Survey of Canada and released as GSC Open File 2817 and includes re-contoured residual, vertical gradient and horizontal gradient magnetics and potassium, thorium, uranium, thorium/potassium, uranium/potassium and uranium/thorium plots. The geophysical data provides new insight into the geology and mineral potential of the Iron Mask Batholith particularly in areas covered by overburden.

 

The Iron Mask survey was delivered through support from the Rocks to Riches (AMEBC) program and Geoscience Partnerships developed between Abacus Mining and Exploration, Imperial Metals Corporation and Nova Gold Corporation to study alkaline porphyry copper-gold deposits.


 
Geology of the Tahtsa Ranges Between Eutsuk Lake and Morice Lake, Whitesail Lake Map Area,

West-Central British Columbia

Geoscience Map 2006-5

(Parts of NTS 93E/5,6,9,10,11,12,13,14 and 15)
Geology and compilation by Larry J. Diakow


Hardcopy Price $15; 1 sheet at 1:150 000 scale

 

This geological compilation covers approximately six, 1:50 000-scale map sheets adjacent to the Coast Belt-Intermontane Belt boundary within the Whitesail Lake map area. The map is based on a compilation of geological mapping conducted by the BC Geological Survey during the Whitesail Project (1987-1990), as well as data available in previously published government reports and university theses. The area is underlain by a diverse assemblage of Late Paleozoic to Cenozoic volcanic, sedimentary and metamorphic rocks, together with numerous plutonic rocks.

 

The map features a collation of available fossil collections and age determinations. It also contains a mineral occurrence database that demonstrates a strong spatial relationship between Cu-Mo mineralization and hornblende-biotite-bearing intermediate intrusions of the Late Cretaceous and Eocene suites.

 


Geology of the Central Toodoggone River Map Area, North-Central British Columbia
Geoscience Map 2006-6

(Parts of NTS 94E/2,6,7,10 and 11)
Geology by Larry J. Diakow, Graham Nixon, Ryan Rhodes and Phu van Bui
Geochronology by Richard Friedman and Thomas Ullrich (U.B.C. Earth and Ocean Sciences)


Hardcopy Price $15; 1 sheet at 1:50 000 scale

 

Contribution to the Toodoggone Targeted Geoscience Initiative II - Mining Company Partnership

This geological map is the result of a 1:20 000-scale bedrock mapping program conducted from 2003 to 2005 as part of a partnership between the BC Geological Survey and Stealth Minerals Ltd., Northgate Exploration Ltd., Finlay Minerals Ltd., Bishop Resources Inc., Sable Resources Ltd., the Geological Survey of Canada, and the University of British Columbia.

 

This map covers approximately 900 km2 of mountainous terrain between the Finlay River and Chukachida Lake, and extends the detailed map coverage at 1:20 000-scale farther to the north beyond published BCGS Geoscience Map 2001-1, centred on the Kemess South Au-Cu porphyry mine. It portrays an updated and revised stratigraphy for the Early Jurassic Toodoggone Formation and comagmatic plutons of the Black Lake intrusive suite. The Toodoggone Formation in the map area is largely composed of a previously unrecognized stratigraphic succession that is subdivided into 4 new units (i.e., Belle, Pillar, Graves and Junkers). These units consist mainly of subaerial basalt to rhyolite volcanic rocks and derived sedimentary rocks that were deposited between 194 Ma and 186 Ma. They overlie the previously defined, pre-194 to 200Ma Toodoggone Formation, and older Late Triassic basement and occur above an erosional unconformity.

 

Regionally the Toodoggone Formation is noted for numerous epithermal precious metal occurrences and quartz monzonite to monzonite plutons of the Black Lake intrusive suite locally host Au-Cu porphyry mineralization. Copper-magnetite skarns are locally developed within Early Permian limestones of the Asitka Group crosscut by Early Jurassic plutons.


 

Geology of the Canim Lake Area
(092P/15)

Open File 2006-8
1 sheet at 1:50 000-scale by Paul Schiarizza & Amy Boulton

 

The Canim Lake map area covers about 1000 square kilometres within the Quesnel Highland and Fraser Plateau of south-central British Columbia. This new geological map is based on fieldwork conducted during 2005. The map area is underlain mainly by sedimentary, volcanic and volcaniclastic rocks of the Middle to Upper Triassic Nicola Group, together with Late Triassic to Early Jurassic ultramafic to granitic plutonic rocks. These rocks are part of the Quesnel magmatic arc, which hosts the Afton and Mount Polley porphyry Cu-Au deposits to the south and north, respectively. Younger rocks in the map area include mid-Cretaceous granitic stocks and batholiths, Eocene volcanic and sedimentary rocks, and Quaternary basalt. Mineral occurrences located within the map area include disseminated and fracture controlled Cu-Au (locally with Pt, Pd) within ultramafic, dioritic and monzonitic rocks of the Quesnel arc suite, as well as porphyry Mo within mid-Cretaceous granite and Au-bearing quartz-carbonate veins and mineralized shears.



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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2006-2

January 20, 2006

NEW British Columbia GEOSCIENCE PRODUCTS
available at Mineral Exploration Roundup, Vancouver, January 2006:

Geological Fieldwork 2005: A Summary of Fieldwork and Current Research - Paper 2006-1

This is the thirty-first edition of Geological Fieldwork: A Summary of Fieldwork and Current Research. An annual publication, this year it contains 31 individual reports in 365 pages. These include reports on 13 projects funded by Geoscience BC, and summarize results from BC Geological Survey (BCGS) projects completed throughout the province during the past year. The contents of this volume reflect the emphasis of the BC Geological Survey's year 2005 field surveys in partnership with industry, universities and other government agencies.

Highlights include:
- results from the Geoscience BC funded geoscience projects
- reports of bedrock mapping and mineral deposits studies in the Terrace, Eskay-Iskut,
  Canim Lake, northern Vancouver Island, Greenwood and Toodoggone areas
- details of the geology and setting of the Mt Polley and Galore Creek Cu-Au porphyry
  deposits
- information on Regional Geochemical Surveys in the Bowser Basin, Nechako River and
  southeastern BC areas
- investigation of industrial minerals potential along coastal BC
- new information regarding the province's diamond potential in the northeast.
- review of coal within the Gates Formation in northeastern BC
- a description of ASTER imagery available at www.MapPlace.ca



British Columbia Mineral Exploration Review 2005

This annual publication provides an overview of mineral exploration and development activities in the Province of British Columbia. Ministry geologists using information provided by government, companies and individuals in the British Columbia mining industry compile the publication. It contains detailed statistical tables and illustrations, in addition to location maps and tables summarizing significant mining, exploration and development projects in the province during 2005. A total of $220 million is estimated to have been spent on mineral exploration in the Province during 2005 and this publication provides information on the major areas of interest. Information Circular 2006-1.

Exploration and Mining in British Columbia 2005

This annual, 100-page, publication provides an overview of mining, mineral exploration and development activities in British Columbia. Regional Geologists in the Mining and Minerals Division of the Ministry compile the report using information provided by government, companies and individuals in the British Columbia mining industry compile the publication. It contains detailed statistical tables and illustrations, in addition to location maps and tables summarizing significant mining, exploration and development projects in the province during 2005. This publication provides information and statistics on mining and exploration activities on a regional basis.


Geoscience Map series of geoscience products

Geology of British Columbia

N.W.D. Massey, D.G. MacIntyre, P.J. Desjardins and R.T. Cooney

 

This digital map product at 1:250 000-scale, is a set of 3 sheets depicting the geology of the Province and is available as a free digital download from the Ministry website. This product is the first, lithology-based geological map product of the Province since the mid-1970s and it incorporates the geological information and current interpretation of the geology based on the geoscience research of government, industry and academia over the past 25 years. Geoscience Map 2005-3

Open File series of geoscience products

Operating Mines and Selected Major Exploration Projects in British Columbia - 2005
by J. Pardy

This poster-style map depicts all of the metal, coal and industrial minerals operations in the Province during 2005, in addition to all of the significant mineral exploration programs across the province. Open File 2006-1


Geology of the Upper Iskut River Area, British Columbia
by D.J. Alldrick, J.L. Nelson, T. Barresi, M.L. Stewart and K.A. Simpson

This map is the latest map release generated by the Eskay-Iskut regional mapping and mineral deposits study which is investigating VMS potential and identifying new areas which may have potential to host deposits similar to that at the Eskay Creek mine. Open File 2006-2


Geology of the Usk Map-Area
(103I/09)
by J.L. Nelson, T. Barresi, E. Knight and N. Boudreau

 

This is the first map product from the fieldwork undertaken in the Terrace area of northwestern BC looking at the geology and mineral potential for the area. This map will be of particular interest in generating new exploration activity for VMS and porphyry occurrences. Open File 2006-3



Geology Between the Finlay River and Chukachida Lake, Central Toodoggone River Map Area
(Parts of NTS 094E/2, 6 and 7)
by L.J. Diakow and R. Rhodes

This is the latest in a series of highly detailed geological maps of the Toodoggone mining camp and sheds new light on the potential for Cu-Au porphyry and vein-gold deposits in this productive area of north-central BC. Open File 2006-4



Geology of the Nimpkish Map Area, Northern Vancouver Island

(92L/07)
by G.T. Nixon, M. Kelman, D. Stevenson, L. Stokes and K. Johnston


This map is the first in a series of new geological maps to be produced for northern Vancouver Island. It is of particular interest as it helps clarify the geology and setting of the Hushamu Cu-Au porphyry occurrence and will aid in exploration for similar deposits in the area. Open File 2006-5


Geology of the Volcano Creek - More Creek Area, British Columbia
by D.J. Alldrick, J.L. Nelson and T. Barresi


This map is a detailed geological map of an area of the province with high potential for Eskay Creek style mineralization and highlights the rock units with potential for new discoveries. Open File 2006-6



Communities Benefiting from BC Mineral Exploration Activity - 2005

 

This is a map of the province illustrating the benefits of regional, mineral exploration investment on specific communities across the province in terms of jobs and economic activity in the regions. Open File 2006-7


 

Communities Benefiting from Mining Activity - 2005

 

This is a map of the province illustrating the employment and economic benefits of the BC mining industry. The mining industry in BC had a total value of $4.9 Billion in solid mineral production (coal, metals and industrial minerals) during 2005 and the benefits of this accrue to all communities across the province. Open File 2006-9



Mineral Properties for Sale in British Columbia

 

This map depicts those mineral properties which prospectors, geologists and small companies may have for sale or option across the province. Owners are encouraged to submit information to the Ministry on their available properties. Open File 2006-10



GEOFILE series of geoscience products

- available as digital files: free from the Ministry website at:


GeoFile 2005-18
Till Geochemistry - A New Tool for Polymetallic Mineral Exploration in
British Columbia’s Southern Interior
R.C. Paulen, R.E. Lett and P.T. Bobrowsky

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/default.aspx



GeoFile 2005-19

Potential for Gem Beryl and Schist-hosted Emerald in British Columbia
by A. Legun



GeoFile 2005-25
Kimberlite and Diamond Indicator Minerals in NE BC - A Reconnaissance Survey
by G.J. Simandl, T. Ferbey, V.M. Levson, N.D. Robinson, R. Lane, R. Smith, T.E. Demchuk, I.M. Raudsepp and A.S. Hickin



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British Columbia Ministry of Energy, Mines & Petroleum Resources
Mining and Minerals Division
BC Geological Survey
Release Notification 2006-1

 

January 13, 2006

FOR IMMEDIATE RELEASE

 

The search for, and discovery of, diamond deposits in Canada has had a significant impact on Canada’s economy over  the past decade.  Canada is now the number three producer in the world for these high-quality gemstones and is believed to have significant and untapped potential for new discoveries.

 

Recent work by the BC Ministry of Energy, Mines and Petroleum Resources staff highlights the fact that the potential for diamond occurrences in the northeast of the province is better than previously assumed.  Some diamond indicator minerals have been identified by limited, regional sampling. 

 

Approximately 400 km southeast of Fort Nelson, in Alberta between Fort McMurray and the Peace River, there are areas with similar geology and diamond occurrences, but no mines.  Comprehensive exploration of northeast British Columbia would be required to properly assess this diamond potential.


Kimberlite and Diamond Indicator Minerals in Northeast British Columbia, Canada – A Reconnaissance Survey
by G.J. Simandl, T. Ferbey, V.M. Levson, N.D. Robinson, R. Lane, R. Smith, T.E. Demchuk, I. M. Raudsepp and A.S. Hickin
  GeoFile 2005-25

 

Northeast British Columbia is an under-explored region of North America for diamonds, other gemstones and minerals. The area has a low relief and extensive glacial and fluvial surficial materials which add a challenge to exploration programs.  BC Ministry of Energy, Mines and Petroleum Resources staff investigated this region by collecting approximately 58 samples from a variety of materials within northeast British Columbia, to test for kimberlitic indicator minerals and the potential for diamond-bearing bedrock.

 

Since diamonds occur in neighbouring parts of Alberta with similar geology and are mined in basement rocks of the Northwest Territories which are believed to extend under northeast British Columbia, there is the potential to discover diamonds in this region.  Diamonds have been discovered within the Buffalo Head Hills and Birch Mountain areas of neighbouring Alberta, approximately 400 km southeast of the Fort Nelson.  As well, several alluvial diamond occurrences are reported adjacent to northeast British Columbia in the Northwest Territories and in Alberta.  

 

Recent age dating of basement rocks in the northeast indicates that a Precambrian crystalline basement, similar in age to the Buffalo Head Terrane, extends farther west than previously expected, supporting the hypothesis that northeast British Columbia may have been underlain by a thick, cold lithosphere prior to rifting of the Rodinia Supercontinent.  The deeper portions of the “diamondiferous root” may subsequently have been destroyed after the diamonds were brought to the surface by kimberlites, lamproites, or other diamond host rocks.

 

The results of this limited, heavy mineral reconnaissance survey carried out by the BC Geological Survey, when considered in conjunction with the findings of a previous kimberlite indicator mineral survey, provides new evidence for diamond potential in the northeast of the province.

 

This 24-page digital report containing maps, heavy mineral analytical plots, data tables and photos is available free from the BC Ministry of Energy, Mines and Petroleum website at:

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2005-25.aspx

 

 

GeoFile 2005-19

Potential for Gem Beryl and Schist Hosted Emerald in British Columbia

by Andrew S. Legun   

 

Emeralds have recently been found in the Yukon and this report evaluates the potential to find them in British Columbia.  Emerald, a gem variety of the mineral beryl, is a high-value commodity for which even small deposits could be economically interesting.  There has been relatively little prospecting and exploration for gemstones in the province, therefore, there are significant opportunities to find gem and semi-precious stones.   This study identifies the areas in British Columbia that are believed to have the best potential for emerald discoveries.

 

This 20-page report reviews the gem varieties of beryl, the associations of beryl with granitic rocks, and the particular association of emerald with ultramafic wallrocks affected by volatile-rich fluids. The publication includes an emerald potential map for the province and a general description of areas of gem beryl potential.  There has been little systematic work on transparent gemstones in British Columbia in spite of a number of gem discoveries in the last fifteen years.  This study received funding from the BC and Yukon Chamber of Mines, Rocks to Riches program in 2004, which provided support for some limited fieldwork related to known emerald and beryl occurrences in the province.

 

This digital report and maps are available free of charge as downloadable files from the Ministry website at:Report on Emerald and Beryl in BC:
www.empr.gov.bc.ca/DL/GSBPubs/GeoFile/GF2005-19/GF2005-19.pdf

 

Map 1- Emerald & Beryl Potential of BC
www.empr.gov.bc.ca/DL/GSBPubs/GeoFile/GF2005-19/GF2005-19-Map1.pdf

 

Map 2 – Geology of the Hellroaring Creek Area, SE BC  www.empr.gov.bc.ca/DL/GSBPubs/GeoFile/GF2005-19/GF2005-19-Map2.pdf   

 

 

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