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Ministry of Energy Mines and Responsible for Core Review

GSB Publications Release Notifications for 2012

 

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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey E-NewsLetter

Release Notification 2012-11

  

December 18, 2012

 

BCGS Open File 2012-06, Geoscience BC Report 2012-10, Map 2012-10-1

 

Mesozoic magmatism and metallogeny of the Hotailuh batholith, northwestern British Columbia

 

By B.I. van Straaten, J.M. Logan, and L.J. Diakow

 

A regional-scale reconnaissance bedrock mapping study was conducted in the Hotailuh batholith area, near the town of Dease Lake, as part of Geoscience BC’s QUEST-Northwest Project. This mapping is a partnership between the BC Geological Survey and Geoscience BC.  This study combines one summer of field bedrock mapping with detailed petrography, geochemistry of both altered/mineralized and unaltered samples, geochronological data, and integration with airborne geophysical survey results.

 

The 2275 km2 composite Late Triassic to Middle Jurassic Hotailuh batholith is in the Stikine terrane of northern British Columbia. The investigation aimed to refine the temporal magmatic and geochemical evolution of the batholith, and specifically focused on relating mineralization with magmatic events.

 

The Late Triassic plutonic suite comprises the Gnat Lake ultramafic to mafic bodies, Cake Hill felsic pluton and Beggerlay Creek ultramafic to mafic pluton. The absence of equivocal crosscutting relationships, lack of absolute crystallization age determinations for the ultramafic to mafic intrusions, and the absence of detailed mineral chemistry data makes it difficult to determine the genetic and temporal relationships between the different Late Triassic intrusions. The Late Triassic intrusions are spatially associated with, and in places intrude, poorly exposed and poorly dated, intermediate-mafic volcanic and sedimentary rocks of the Triassic Stuhini group. The Middle Jurassic Three Sisters pluton comprises at least four phases, namely the finegrained mafic-intermediate phase, a mafic phase, central felsic phase, and a crosscutting potassic phase. U-Pb zircon crystallization ages and Ar-Ar cooling ages confirm that all phases formed during a relatively short time span in the Middle Jurassic. The northern and eastern margin of the batholith is nonconformably overlain by a succession of Early Jurassic basal sedimentary rocks grading upward into Early-Middle Jurassic volcanic rocks. The volcanic rocks were previously mapped as Triassic Stuhini group, but new geochronological data and mapping suggest they are part of the Jurassic Hazelton group.

 

Geochronology and geochemistry confirm the presence of at least two discrete magmatic events in the Late Triassic and Middle Jurassic. Both magmatic events have a strong calc-alkaline subduction-modified subcontinental mantle geochemical signature, and formed in a volcanic island arc to continental volcanic arc setting. At least two episodes of mineralization associated with Late Triassic and Middle Jurassic magmatism are found in the area. In addition to the known mineral occurrences within the batholith and its immediate surroundings, this study identified several new mineral occurrences. The intrusion-related magmatic-hydrothermal mineralization comprises predominantly copper, gold, silver, molybdenum and/or tungsten occurrences. Mineral occurrences occur peripheral to the main batholith and along contact zones between different magmatic phases within the batholith. The Gnat Pass ductile to brittle shear zone on the western margin of the batholith appears especially well endowed with mineral occurrences, and includes the newly dated (ca. 216.5 Ma) porphyry copper prospect at Gnat Pass.

 

British Columbia Geological Survey

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Pages/2012-06.aspx

 

Geoscience BC

http://www.geosciencebc.com/s/DataReleases.asp

 

http://www.geosciencebc.com/s/Report2012-10.asp

 

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Most provincial geoscience data can be easily accessed over the internet in map format at:

www.MapPlace.ca and through various thematic pages at www.empr.gov.bc.ca/geology 

 

BC Geological Survey Publications are available online at

http://www.empr.gov.bc.ca/mining/geoscience/publicationscatalogue/

 

Questions or to update your contact info please contact the BC Geological Survey:

Email: Geological.Survey@gov.bc.ca     Tel: 250-952-0372    Fax: 250-952-0381

 
 
 
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September 26, 2012

 

MEM-UVic Partnership 2012 - Call for Proposals

 

Deadline for submissions:  November 1, 2012.

 

The MEM-UVic Research Partnership is issuing a call for research proposals in minerals-related topics within the province of British Columbia.  There will also be a number of opportunities for co-op student work terms under the Partnership in 2012/13. 

 

Applicants must follow the instructions for submitting research applications found on the Partnership website.  Applicants are advised to first identify a Ministry sponsor who agrees to endorse the project and/or co-op position.  Applications should be sent by email to both the MEM-UVic Partnership Committee Secretary and Committee Treasurer.

 

Geoscience research proposals should be targeted at producing results that will attract mineral exploration investment in B.C.  Projects can be very diverse and include, but not limited to:  till sampliing, remote sensing, economic geology, geophysical studies and interpretations, thesis geological mapping, geochemical studies and interpretations, community education projects, 3D models and GIS assembly of existing data.  See guidelines for preferred topics for 2012.

 

 
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September 12, 2012

 

EMR CORPFILE INDEX 

 

After more than 15 years, the EMR CORPFILE and EMR CORPFILE Index are now available for BC Properties through the NRCan Library in Ottawa.  These documents have been culled and indexed and a copy of the index is also available via the MINFILE Coding Manual.   

   

 
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey E-NewsLetter

 

August 30, 2012

 

British Columbia Geological Survey Open House, November 16, 2012

 

You are invited to an open house being held by BCGS, in conjunction with the Pacific Section of the Geological Association of Canada, on November 16 at St. Ann’s Academy in downtown Victoria (835 Humboldt Street).

 

Speakers from BCGS, the School of Earth and Ocean Sciences at University of Victoria, and the Pacific Geoscience Centre will present exciting new developments about the geology, tectonics, and mineral deposits of British Columbia. We are planning ample opportunities for informal discussions, including a social event at the end of the day.

 

We look forward to your attendance, so please reserve this date. Details will follow in subsequent announcements.

 

 
 
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey E-NewsLetter

Release Notification 2012-10

 

August 21, 2012

 

Open File 2012-08 (also released as GSC Open File 7234)
Bedrock geology of the upper Kutcho Creek area (parts of NTS 104-I/01, 02)

 

By P. Schiarizza

 

The upper Kutcho Creek map area is in northern British Columbia, about 100 km east of Dease Lake. It covers about 400 square kilometres and encompasses the transition between the Stikine Ranges of the Cassiar Mountains to the north and the Spatsizi Plateau to the south. Open File 2012-08 presents a 1:40 000-scale geologic map of this area based on fieldwork conducted in 2010 and 2011. The map features new subdivisions of the Permo-Triassic Kutcho assemblage, a heterogeneous package of schists derived from felsic and mafic volcanic and volcaniclastic rocks and associated felsic and mafic intrusions. The Kutcho assemblage hosts the Kutcho Creek Cu-Zn volcanogenic massive sulphide deposit (MINFILE 104I  060), as well as several other VMS prospects and younger vein occurrences. The Kutcho assemblage is in the King Salmon allochthon, a narrow belt of penetratively deformed, greenschist-grade metamorphic rocks that also includes slivers of the late Paleozoic to early Mesozoic Cache Creek Complex, and a Triassic-Jurassic metasedimentary succession, the Whitehorse trough, that unconformably overlies both Kutcho and Cache Creek rocks. The allochthon is bounded to the south by the north-dipping King Salmon thrust fault, and to the north by the Nahlin fault; it is truncated by the northwest-striking Kutcho dextral strike-slip fault near the northeast edge of the map area.

 

Operating funds for the Kutcho mapping program were provided by the BC Geological Survey, a private-public partnership agreement with Kutcho Copper Corporation, the Geological Survey of Canada (EDGES component of the GEM program) and, in 2010, a partnership agreement with the University of Victoria.

 

Details and descriptions of the geologic units and structures within this map area can be found in:
Schiarizza, P. (2012): Geology of the Kutcho assemblage between the Kehlechoa and Tucho rivers, northern British Columbia (NTS 104I/01, 02); in Geological Fieldwork 2011, British Columbia Ministry of Energy and Mines, Paper 2012-1, pages 75-98.

 

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Documents/2012-08.pdf

 

 

 
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey E-NewsLetter

Release Notification 2012-09

 

June 29, 2012  

 

Information Circular 2012-03
Jade In British Columbia

 

Mineral Development Office, Vancouver

 

 

Jade is a commercial term for green, white, black, or yellow-brown jadeite and nephrite.  Jadeite is a rock that consists of the mineral jadeite (a sodium-rich, high pressure pyroxene), whereas nephrite consists of amphibole minerals (tremolite-actinolite) in which prismatic to needle-like crystals are arranged in randomly oriented bundles.  All of the known jade deposits in B.C. are nephrite. 

 

This Information Circular summarizes the geology and origin of jade in British Columbia, provides prospecting tips, and points to other sources of information.

 

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/Information Circulars/Pages/IC2012-03.aspx

 

 
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey E-NewsLetter

Release Notification 2012-08

 

June 25, 2012  

 

Open File 2012-07
Specialty Metals in Canada

G.J. Simandl, E.A. Prussin, and N. Brown

 

Specialty metals are essential raw materials for manufacturing high technology products and for fabricating devices that reduce greenhouse gas emissions.  Industrialized countries consider access to specialty metals important for national security.  More than 1000 Ta, Nb, Zr, Hf, Li, REE and Be occurrences are known in Canada.  These occurrences can be described as anomalies (140), showings (563), prospects (204), developed prospects (109), past producers (23), current producers (8), Li-bearing oilfield brines (48), and oil sands by-products (2).  Geologically, the occurrences can be grouped into 14 categories: carbonatite/syenite-related; peralkaline intrusion-related; pegmatite/granite/aplite; REE ± P veins; placer/paleoplacer; sedimentary phosphates; REE- enriched Iron oxide copper gold ore (IOCG); sandstone–hosted xenotime; REE as uranium by-products; skarns; greisen/veins;  Li-bearing brines; oils sands by-products; and other/unknown. Canada has excellent geological potential to meet the continued global demand for specialty metals.

 

This Open File was produced as part of the Targeted Initiative 4 (TGI-4) led by the Geological Survey of Canada (Natural Resources Canada) in collaboration with provincial and territorial partners.

 

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Pages/2012-7.aspx

 

 

 
 
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey E-NewsLetter

 

June 21, 2012  

 

Staff Updates

 

Adrian Hickin, Director Cordilleran Geoscience

 

 

Adrian Hickin has been appointed Director of the Cordilleran Geoscience section. He is responsible for developing the BC Geological Survey's field activities. From 1999-2001, Adrian worked at the BC Geological Survey. After an interval in the diamond and gas exploration industries, he returned to the Oil and Gas Division of the Ministry (2004), where his most recent position was Director of Petroleum Geology.  Adrian has expertise in: Quaternary geology; near-surface geophysics; stratigraphy; sedimentology; groundwater; fluvial geomorphology; glacial history; drift thickness and bedrock topography mapping; aggregate potential mapping; and ultra shallow gas and shale gas. His current projects focus on Quaternary history and land systems, using LiDAR, near-surface geophysics, optically stimulated luminescence dating, and traditional stratigraphy.

 

Adrian.Hickin@gov.bc.ca

(250) 953-3801

http://www.empr.gov.bc.ca/Mining/Geoscience/Staff/Pages/AdrianHickin.aspx

 

 

Betty Chow, Administrative Assistant, Mineral Development Office and Mineral Titles (Vancouver)

 

Betty Chow is the new Administrative Assistant for the Mineral Development Office and for Mineral Titles in Vancouver. With several years of administrative experience in the federal government, Betty will provide administrative support to both branches.

 

Betty.Chow@gov.bc.ca

(604) 660-3332

 

 

BC Geological Survey

British Columbia Ministry of Energy and Mines

Mines and Mineral Resources Division

June 21, 2012

 

 

 

 

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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey E-NewsLetter

 

June 18, 2012  

 

 

 

 

 

Congratulations to our Provincial Premier's Award finalists.  Dr. Ray Lett was nominated in the Legacy category, and MapPlace, the online map system developed by the BC Geological Survey staff, was nominated in the Innovation category.  Each category had three finalists that were selected from 118 nominations submitted by 16 BC Public Service agencies.  The BC Public Service has over 27, 000 employees, which puts the enormity of these accomplishments in perspective.

 

 

 

 

Dr. Ray Lett

 

For over 20 years, Dr. Ray Lett served as Senior Geochemist at the BC Geological Survey. Now a BCGS Emeritus Scientist and an Adjunct Professor at the School of Earth and Ocean Sciences (University of Victoria), Ray was the driving force behind developing and maintaining the provincial geochemical database. With analytical data from over 60,000 stream and lake sediment samples, the database is used intensively by diverse clients.

 

Throughout his career, Dr. Lett has excelled as a researcher, leader, volunteer, and mentor. His professional reputation and personal legacy is one that all British Columbians can be proud of.

See the “Geochemist Who Did” on Youtube http://www.youtube.com/watch?v=V7JGebKC7Rg

 

MapPlace

 

  

The MapPlace team. Back Row: Kirk Hancock; Ward Kilby; Tian Han; Larry Jones; Gib McArthur; Allan Wilcox. Front Row: Sarah Meredith‐Jones; Laura de Groot; Yao Cui; Ted Fuller. Missing: Pat Desjardins and Dave Lefebure.  Ward, Gib, and Dave are past BCGS staff.

 

MapPlace is an interactive system that allows clients online access to British Columbia’s extensive geoscience, mineral exploration, and mining databases. The first to enable users to retrieve information from multiple datasets and create custom maps, MapPlace transformed how geological surveys worldwide deliver their products. By integrating new tools, adding more data, and listening to clients, survey staff have ensured that MapPlace remains a global leader in geospatial technology. MapPlace has proven useful to diverse groups, such as explorationists, land planners, environmental consultants, First Nations, academia, and the public. For all its impact, MapPlace was designed and implemented by only a small team of geoscientists, with assistance from co-op students and contract computer programmers. Operational costs for MapPlace are minimal compared to the cost of acquiring the data the application delivers.

 

See “Transforming How Geological Surveys Deliver Data” on YouTube http://www.youtube.com/watch?v=eT_8aLbV1ko

 

 Back to top Top

 

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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey

Release Notification 2012-07
 

May 17, 2012  

 

Updated:  Opportunities to Explore:  BC Minerals and Coal Industry

 

 

 

This updated document introduces potential investors to the exploration and mining of minerals and coal in British Columbia.  Primarily intended for a foreign audience, it answers questions commonly posed by those interested in pursuing investment opportunities in the province. It includes sections on

 

·         what minerals and coal commodities British Columbia produces

·         investment in the province by international companies

·         the infrastructure that British Columbia offers

·         how mineral and coal interests are acquired

·         the process for permitting mines

·         the relationship between First Nations and the Government of British Columbia

·         how to take advantage of the opportunities in British Columbia’s mineral and coal industry

·         how mining is taxed in British Columbia

·         government incentives for investing in mining and mineral opportunities in British Columbia

·         sources of further information

http://www.empr.gov.bc.ca/Mining/investors/Pages/vmdo.aspx

 

  
 
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey

Release Notification 2012-06
 

April 23, 2012  

 

Staff Update:

 

 

Alexei Rukhlov is the new Senior Geochemist at the BC Geological Survey. Alexei’s focus will be applied geochemistry studies and development of provincial geochemical databases.

 

Alexei has strong expertise in mineralogy, igneous petrology, radiogenic isotope geochemistry, class 100 clean laboratories and mass spectrometry. Alexei’s post-doctoral research at Carleton University focused on Ca, Sr, Pb, Nd and Hf isotopic systematics and geochronology of carbonatites to monitor chemical perturbations in the subcontinental mantle from the Archean to the Recent. In the Canadian Cordillera, Alexei managed exploration and development of carbonatite-hosted Nb-Ta-REE deposits of the Blue River area and studied geochemistry, mineral potential and magmatism of the Mesoproterozoic Belt-Purcell basin in SW Alberta. Alexei’s recent projects at Alberta Geological Survey were metallic mineral potential evaluation of Alberta and geochemistry and petrology of ultrapotassic rocks of the Sweet Grass Hills igneous complex. Alexei has taught at St. Petersburg State University and has published his research findings in several international journals.

Email: Alexei.Rukhlov@gov.bc.ca

Phone: 250-952-0396

 

 

Janet Riddell is the new Senior Minerals Coal Geologist at the BC Geological Survey.   Janet’s focus will be rebuilding the Ministry’s in-house coal geology expertise.

 

Janet has many years of experience in the Canadian Cordillera, in the mineral exploration and forestry industries, as a bedrock mapper with the B.C. Geological Survey, and as a Petroleum Geologist with the Oil and Gas Division of the Ministry.  Her past projects include shallow freshwater aquifer potential in shale gas regions of northeast B.C., evaluation of oil and gas potential in the Nechako region, forest ecosystem mapping, and Tatlayoko/Taseko Lakes geological mapping.

Email:  Janet.Riddell@gov.bc.ca

Phone:  250-952-0350

 

 

Larry Aspler is the new Marketing and Publications geologist at the BC Geological Survey.   Larry’s focus will be to manage the Survey’s publications and provide marketing expertise.

 

Complex deformation in his Ph.D. field area (Nonacho Basin, N.W.T) led Larry to expand his interests from an initial specialization in sedimentology, stratigraphy, glacial geology, and paleoclimatology to acquire expertise in structural geology and tectonics. Larry maintains a strong interest in natural hazards and in using the geologic record to establish recurrence intervals of potentially catastrophic events over time frames extending beyond historical accounts.

 

Larry has taught at Carleton University, State University of New York (Potsdam) and most recently at Grinnell College in Iowa.  He is an Associate Editor of the Journal of Marine and Petroleum Geology, serves on the Editorial Board of the Journal of African Earth Sciences, and is a critical reviewer for several international journals.

Email:  Lawrence.Aspler@gov.bc.ca

Phone:  250-952-0391

 

 

Fiona Katay is the new GIS Geologist at the BC Geological Survey.   Fiona will be focused on the update to the BC Geology Bedrock map layers and integrating the ongoing regional studies into the geological and geospatial databases.

 

Fiona began her career as a petroleum geologist and worked for 12 years in the oil and gas industry in Calgary doing geological mapping, 3D modelling, and resource evaluation of subsurface reservoirs.  Most recently over the past few years, she has been working as a geological consultant in mining exploration, working as a grade control and mapping geologist at an open pit gold mine, running field exploration programs, and compiling and managing data.  In addition, she consulted as a geomorphologist, mapping Pleistocene glacial sediments and modern-day depositional environments, doing field assessments, and GIS.

Email:  Fiona.Katay@gov.bc.ca

Phone:  250-952-0395 

 

Correction 

 

There was an error in the data release "BCGS Open File 2012-04 / Geoscience BC Map 2012-08-1: Dease Lake -- Little Tuya River Geology, NTS 104J/ 08 & 07E." Specifically, the convergence on the King Salmon thrust fault and a splay which confines the Cache Creek rocks was reversed in both the map and data package.

Corrected versions of the PDF map and data package have now been posted to our website and are available for download. 
Our apologies for any inconvenience.

 
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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey

Release Notification 2012-05
 

April 3, 2012  

 

Contents:

 

Open File 2012-04: Dease Lake - Little Tuya River Geology (NTS 104J/08 & 7E)

J.M. Logan, D.P. Moynihan, L.J. Diakow and B.I. van Straaten

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Pages/2012-4.aspx 

 

Geoscience BC's QUEST-Northwest Project is a multidisciplinary, integrated project designed to help focus mineral exploration in a highly prospective area of northwestern BC. The project's main activities include: two airborne magnetic surveys flown at line spacing of 250 metres, bedrock geological mapping and a geochemical program. The digital bedrock data set presents the field mapping results of the QUEST-Northwest Dease Lake Geoscience project - a partnership between Geoscience BC and the BC Geological Survey. The project completed regional scale bedrock geological mapping over a 1275 km2 area extending south west from the community of Dease Lake to the Tuya River that coincides with the northwest corner of the QUEST-Northwest Block 1 airborne magnetic survey area (released through Geoscience BC in January).

 

The Dease Lake map sheet 104J/08 and the east half of Little Tuya River map sheet 104J/07 are underlain mainly by Paleozoic to Late Triassic sedimentary, volcanic and plutonic arc rocks of the Stikine Terrane, which locally host large Cu-Au porphyry deposits like Red Chris, Schaft Creek and Galore Creek. In the northeast part of the map these rocks are thrust imbricated with similar aged volcanic and sedimentary oceanic rocks of the Cache Creek Terrane along the north-dipping King Salmon Fault. Early to Middle Jurassic sedimentary rocks of the Takwahoni and Inklin formations of the Whitehorse Trough overlie the Stikine and Cache Creek terrane rocks respectively. Middle Jurassic granodiorite and an equi-dimensional Paleocene granite with associated molybdenum mineralization intrudes the Early Jurassic Takwahoni sedimentary rocks. Unconformably capping some of the highest peaks in the area are columnar basalts of the Miocene to Pliocene Tuya Formation. Preserved beneath these young basalts in the southwest corner of the map are lower Tertiary coal-bearing sediments of the Tanzilla Canyon Formation.

 

The map provides revised geology, geochemical analyses of alteration and mineralization and new isotopic dates for volcanic and plutonic rocks in the area which when integrated with regional exploration target models and the new airborne magnetic and geochemical data collected by Geoscience BC are expected to benefit the exploration community.

 

 

 

Digital Archive of Regional Geochemical Survey (RGS) Maps

Hardcopy maps showing sample locations for the Regional Geochemical Surveys (RGS) in BC have been scanned and digitally archived. In total, 875 maps are indexed and archived as “RGS Maps” Collection in the Property File, accessible to the public at http://propertyfile.gov.bc.ca. This work is the result of a joint effort by the BC Geological Survey and Geoscience BC.

 

The RGS program in BC started in the 1970s and over the last 40 years has involved the Geological Survey of Canada, the BC Geological Survey, Geoscience BC and contractors. The original hardcopy maps used to locate the sample sites range in map scales from 1:250,000 to 1:50,000, and were stored Ottawa, Victoria and other locations.  While effort was made to archive the original hardcopy maps, other sources were retrieved and digitized if the original maps were not available.  These secondary sources include the hardcopy maps used in the field, as well as Mylar and consolidated maps with transcribed sample locations.

 

The digital archive of the RGS maps not only helps to preserve this important source of data, but also makes these maps accessible to the public. These maps can be used to validate exact sample locations, within the context of streams and other geographic features shown on the original topographic maps used during sample collection. This is especially important at locations where streams have changed course over time, or where the streams shown on the original topographic map at a smaller scale do not match up with the streams shown on a more recent topographic map at a large scale. Errors in the sample locations may also occur when transcribing and transferring into the database.

 

 

 

 

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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey

Release Notification 2012-04
 

March 2, 2012  

 

New Publications:

Open File 2012-02: Till Geochemistry of the Huckleberry Mine Area, West-Central British Columbia (NTS 093E/11)

T. Ferbey, V.M. Levson and R.E. Lett

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Pages/2012-2.aspx 

The silt plus clay-sized fraction of 106 near-surface (<4 m below surface) and 193 sub-surface (up to 30 m below surface) basal till samples collected in the Huckleberry Mine area was analyzed for 37 elements by inductively coupled plasma mass spectrometry (ICP-MS), following an aqua regia digestion, and 35 elements by instrumental neutron activation analysis (INAA).  These data show that there is a good spatial relationship between elevated commodity element concentrations in basal tills and the known locations of porphyry Cu-Mo mineralization in bedrock.  Geochemical data presented here will enable meaningful assessments of new regional-scale till geochemical data that have been collected in areas adjacent to the mine and provide a means of comparison for other explorationists working in the area who are using other geochemical sample types (e.g., stream sediments, till, etc.).  As well, these results will help with the development of strategies for the design and implementation of till geochemistry programs in areas with similar physical and geological characteristics and complex glacial histories.

 

 

 

Information Circular 2012-2: British Columbia Coal Industry Overview 2011

D. Grieve, B. Madu and R. Chu

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/InformationCirculars/Pages/IC2012-2.aspx  

This booklet is intended to provide a concise snapshot of the BC coal industry for the interested public, including those looking to invest.  It includes sections on coal resources, mining, exploration, the tenure system, sources of information, and contacts.  It is intended to complement “Exploration and Mining in British Columbia 2011” and “British Columbia Mines and Mineral Exploration Overview 2011” 

 

 

 

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British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey

Release Notification 2012-03
 

February 22, 2012  

 

New Publications:

  • GeoFile 2012-02: Rare Metal-bearing Deposits in British Columbia with Selected Examples
  • GeoFile 2012-06: Mapping BC's Golden Triangle using ASTER Imagery
  • GeoFile 2012-07: QUEST-Northwest Mapping:  BC Geological Survey Dease Lake Geoscience Project (NTS 104J, 104I), Northern British Columbia.
  • GeoFile 2012-08: Mesozoic Magmatic History and Metallogeny of the Hotailuh Batholith (NW BC)
  • Open File 2012-05: Geology of the Turnagain Ultramafic Intrusion, Northern British Columbia (parts of NTS 104I/07 and 10)  

GeoFile 2012-02: Rare Metal-bearing Deposits in British Columbia with Selected Examples

G.J. Simandl, E.A. Prussin, K. Hancock and S. Meredith-Jones

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-2.aspx

More than 100 RM occurrences are reported in BC. This compilation may serve as a starting point for those considering RM exploration programs in BC. There is uncertainty in the classification of some occurrences due to the scarcity of available information or the unusual nature of particular occurrences. The economic significance of many of these occurrences is poorly known because the size, shape, depth, grade, composition and orientation are not well defined. Based on currently available information, carbonatite-/syenite-related deposits are the most promising for the recovery of RMs, especially Nb and REE.

 

GeoFile 2012-06: Mapping BC’s Golden Triangle Using ASTER Imagery

T. Han, J.L. Nelson and J. Kyba

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-6.aspx

The Advanced Space-borne Thermal Emission and Reflection Radiometer (ASTER) has been found effective for geological mapping applications due to its high spectral resolution in the Shortwave Infrared (SWIR) wavelengths of the electromagnetic wave; frequent revisit cycle and wide swath; and affordability of acquiring images to cover large geographic areas. Using ASTER imagery to map BC's geology, however, faces a few challenges, among others, including complex terrain and dense vegetation coverage. This may partially explain why there are not many documented studies in this regard. This study focuses on testing ASTER's ability on mapping the general rock groups in BC's “Golden Triangle” area, including Triassic Stuhini, Jurassic Jack Formation, Jurassic Hazelton, and the “Combined” which was the combination of “Altered and Mineralized” and “Late Jurassic Intrusion”. An average of 79.8% classification accuracy was achieved. The result indicated that ASTER was capable of distinguishing the above general rock groups. Since this study was conducted exclusively using the spectral information extracted from ASTER imagery and employing a standard image analysis method based on a supervised classification, the result and method of this study can be considered as the baseline, upon which other data sources and advanced image analysis methods need to be explored to take advantage of  ASTER’s full potential  for geological mapping in BC.

 

GeoFile 2012-07: QUEST-Northwest Mapping: BC Geological Survey Dease Lake Geoscience Project (NTS 104J, 104I), Northern British Columbia

J. Logan, L. Diakow, B. van Straaten, D. Moynihan and O. Iverson

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-7.aspx             

Geoscience BC's QUEST-Northwest Project is a multidisciplinary, integrated project designed to help focus mineral exploration in a highly prospective area of northwestern BC.


The project's main activities include: two airborne magnetic surveys flown at line spacing of 250 metres, bedrock geological mapping and a geochemical program.  Collectively these programs will provide detailed, high quality geoscience data that is intended to assist metallic mineral exploration in this area of highly prospective geology.
The QUEST-Northwest Dease Lake Geoscience project is a partnership between Geoscience BC and the BC Geological Survey and is the focus of this poster. 

 

GeoFile 2012-08: Mesozoic Magmatic History and Metallogeny of the Hotailuh Batholith (NW BC)

B. van Straaten, J. Logan and L. Diakow

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-8.aspx  

The composite Late Triassic to Middle Jurassic Hotailuh batholith occupies 2275 km2 at the centre of the Stikine arch, close to the northern margin of the Stikine terrane in northwestern BC. We present the preliminary results of detailed mapping, geochemical and geochonological sampling aimed at refining the temporal magmatic evolution of the batholith, and building a metallogenic framework that relates mineralization to magmatic events. The project is part of the Geoscience BC funded QUEST-Northwest program developed to stimulate mineral exploration in the northwestern part of the province.

 

This study confirms that the Hotailuh batholith is prospective for intrusion-related mineral deposits that formed during at least two mineralizing events – an older event at ca. 220 Ma and a younger event at ca. 170 Ma. The Late Triassic calc-alkaline metallogenic event produced the Gnat Pass porphyry Cu and several other Cu and Cu-Au occurrences on the edges of the Hotailuh batholith, and may be temporally related with Cu mineralization at Schaft Creek further to the southwest. Newly discovered mineral occurrences in Middle Jurassic calc-alkaline plutonic rocks represent a relatively unrecognized metallogenic event that deserves more attention.

 

Open File 2012-05: Geology of the Turnagain Ultramafic Intrusion, Northern British Columbia (parts of NTS 104I/07 and 10)

G.T. Nixon, A.C. Hitchins and G.P. Ross

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Pages/2012-5.aspx  

Magmatic Ni-Cu-PGE sulphide deposits in supra-subduction zone (SSZ) settings are becoming an increasingly important economic resource worldwide yet remain poorly understood and underexplored.  Projects initiated recently under the Targeted Geoscience Initiative No 4 in the Canadian Cordillera seek to address critical knowledge gaps in order to develop new mineral deposit models and robust exploration criteria. The Turnagain ultramafic intrusion is an Early Jurassic Alaskan-type body emplaced in a SSZ setting and unusually enriched in Ni-Cu-PGE sulphides. The new geology map incorporates previous BCGS mapping supplemented by geological, geophysical and ongoing exploration work (drillhole and trenching information) supplied by Hard Creek Nickel Corporation (HNC). The main mineralization is hosted by wehrlite and dunite (Horsetrail zone), and the principal sulphide minerals are pyrrhotite, pentlandite and chalcopyrite. Regional geophysical surveys conducted by HNC indicate that the highly conductive graphitic metasedimentary wallrocks (Mississippian in part) of  the Turnagain intrusion are separated from miogeoclinal strata of Ancestral North American by a steeply dipping reverse fault, and represent the basement to the accreted Quesnel Terrane (Yukon-Tanana Terrane). This interpretation appears consistent with the tight to slightly overturned, eastward-verging folds in the graphitic phyllites documented by Erdmer et al. (2005) and juxtaposed strata of the Ancestral North American miogeocline which occupy the southwesterly-dipping limb of a large homoclinal structure (Gabrielse, 1998). 

 

 
**********************************************   

British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey

Release Notification 2012-02
 

January 24, 2012  

 

New Publications:

  • GeoFile 2012-01: Use of Portable XRF in evaluation of Rare Earth Element-bearing Phospate Deposits
  • GeoFile 2012-03: A KML file to Display Producing Mines in British Columbia at Any Range or Point in Time in the Last 160 Years
  • GeoFile 2012-04: Using Regionated KML Files to Display the Status of a Large Number of Mineral Occurrences in British Columbia
  • GeoFile 2012-05: Using Regionated KML Files to Speed up the Display of a Large Number of Regional Geochemical Survey Sites in British Columbia
  • Poster Highlights  

Upcoming Releases and Events:

  • George Simandl and Jim Logan will be presenting their talks in the Public Geoscience Session at Roundup on the morning of January 24th.
  • JoAnne Nelson, Graham Nixon, Paul Schiarizza and Bram van Straaten will be presenting BC Mineral Exploration Poster Highlights in the BC Room on the afternoon of January 24th.
  • Visit staff at the MEM booth or the BC Room (Seymour Room) during Roundup.

GeoFile 2012-01: Use of Portable XRF in evaluation of Rare Earth Element-bearing Phosphate Deposits

G.J. Simandl, R. Fajber, E.A. Prussin, S. Paradis and K. Grattan

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-1.aspx

 

GeoFile 2012-03: A KML file to Display Producing Mines in British Columbia at Any Range or Point of Time in the Last 160 Years

Y. Cui

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-3.aspx

The KML file MinFile_production_ts.kmz contains 1,696 past and current producing mines over the last 160 years in British Columbia that can be displayed at any range or point of time by using the Time Slider on Google Earth®. Only mines with known operating years are included in this KML file.

 

GeoFile 2012-04: Using Regionated KML Files to Display the Status of a Large Number of Mineral Occurrences in British Columbia

Y. Cui

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-4.aspx             

Regionated KML files have been created to provide a lightweight and quick display of over 12,500 mineral occurrences on Google Earth®. An application has been developed to extract the data from the MINFILE database and style the occurrences based on their status.

 

GeoFile 2012-05: Using Regionated KML Files to Speed up the Display of a Large Number of Regional Geochemical Survey Sites in British Columbia

Y. Cui

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/Pages/2012-5.aspx

To speed up the display of over 60,000 Regional Geochemical Survey (RGS) sites on Google Earth®, regionated KML files have been produced. In this release, the data is extracted from the RGS database and the sample sites are ranked or scored based on copper content.  Due to the large number of sample sites, a single KML file containing all the sites would be too big both for displaying on Google Earth® or as a network link from a website. The regionation technique allows the creation of thousands of inter-linked small KML files (file sizes 9 KB or less in this case), and only fetches and displays a small number of KML files at a given viewing altitude, which significantly improves the performance of loading and displaying the sample sites. 

 

Poster Highlights in the BC Room

The BC Geological Survey, in conjunction with Mineral Titles, Ministry of Forests, Lands and Natural Resources and the Environmental Assessment Office will be providing informal presentations in the BC Room [Seymour Room].  The presentations will be made over the course of Round Up and the feature event of the BC Geological Survey will be late Tuesday afternoon.  Topics covered will include geological highlights, Mineral Titles information and permitting / environmental assessment information.  These are short presentations and will include opportunities for discussion and questions from clients to Ministry staff.  A detailed schedule is available at the Province of BC corporate booth as well as in the BC Room. 

 
  
 
**********************************************   

British Columbia Ministry of Energy and Mines
Mines and Mineral Resources Division
BC Geological Survey

Release Notification 2012-01
 

January 23, 2012  

 

New Publications:

 

Upcoming Releases and Events:

  • GeoFile 2012-02 January 24th at 10:00 a.m.
  • GeoFile 2012-03 January 24th at 10:00 a.m.
  • GeoFile 2012-04 January 24th at 10:00 a.m.
  • GeoFile 2012-05 January 24th at 10:00 a.m.
  • Bruce Madu will be presenting a review of Mines, Development and Exploration in BC 2011 on the morning of January 23rd.
  • George Simandl and Jim Logan will be presenting their talks in the Public Geoscience Session at Roundup on the morning of January 24th.
  • JoAnne Nelson, Graham Nixon, Paul Schiarizza and Bram van Straaten will be presenting BC Mineral Exploration Poster Highlights in the BC Room on the afternoon of January 24th.

Visit staff at the MEM booth or the BC Room (Seymour Room) during Roundup.

 

Geological Fieldwork 2011: A summary of field activities and current research

Paper 2012-01

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/Fieldwork/Pages/GeologicalFieldwork2011.aspx

The annual Geological Fieldwork: A Summary of Field Activities and Current Research volume is the primary publication for reporting results of the previous season’s mapping and research activities.  It contains geoscience articles produced by BC Geological Survey staff and external authors on topics relevant to British Columbia.  This is the premier annual publication for the BC Geological Survey.

 

Exploration and Mining in British Columbia 2011

J. DeGrace, J. Kyba, P. Jago, J. Britton, B. Northcote, D. Grieve and B. Madu http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/ExplorationinBC/Pages/2011.aspx

 

Mines and Mineral Exploration Overview 2011

J. Britton, J. DeGrace, D. Grieve , J. Kyba, B. Madu and B. Northcote

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/InformationCirculars/Pages/IC2012-1.aspx

 

Operating Mines and Selected Major Exploration Projects in British Columbia - 2011

J. Britton, J. DeGrace, D. Grieve, P. Jago, J. Kyba, B. Madu, B. Northcote and R. Chu

Open File 2012-01

http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/OpenFiles/2012/Pages/2012-1.aspx

This Provincial Map shows the location of major exploration projects and producing metal, coal and industrial mineral mines in 2011.  

 

Poster Highlights in the BC Room

The BC Geological Survey, in conjunction with Mineral Titles, Ministry of Forests, Lands and Natural Resources and the Environmental Assessment Office will be providing informal presentations in the BC Room [Seymour Room].  The presentations will be made over the course of Round Up and the feature event of the BC Geological Survey will be late Tuesday afternoon.  Topics covered will include geological highlights, Mineral Titles information and permitting / environmental assessment information.  These are short presentations and will include opportunities for discussion and questions from clients to Ministry staff.  A detailed schedule is available at the Province of BC corporate booth as well as in the BC Room. 

 

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