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Ministry of Energy Mines and Responsible for Core Review

092F

 

NTS 092F location map (click for index map).

Alberni
NTS 092F

092K

092E

092G

092C

 

Researched and compiled by: G.J. Payie, G. Owsiacki, L.D. Jones, P.S. Fischl, W.S. Vanderpoll and D.E. Jakobsen

 

Release date: June 1990

 

View NTS 092F in MapPlace

 

092F Map
Geological Legend
Master & Production Report
ARIS Maps: 92F02, 03, 04, 05, 06, NE, NW, SE

 

The Alberni map area straddles Georgia Strait, encompassing a portion of Vancouver Island, all of Texada Island and a section of the south coastal mainland. The mineral wealth of the area has been exploited since the late 1800's, resulting in the discovery and documentation of 566 occurrences. In 1986, a 4-year program of regional mapping was initiated under the Canada-British Columbia Mineral Development Agreement focusing on the Paleozoic Sicker Group. This work, by N. Massey of the Geological Survey Branch, has led to major stratigraphic revisions and associated nomenclature changes. In 1992, a province-wide mineral potential study was launched with Vancouver Island as the initial study area. Data resulting from this study are available on the Ministry website.

 

MINFILE map 092F - Albernie (click for larger map and Texada inset).

The Vancouver and Texada islands sections of the Alberni map area lie within the Insular belt and are underlain mainly by rocks of the Wrangellia terrane. The strata consists of several volcano-sedimentary cycles of the Upper Paleozoic Sicker and Buttle Lake groups, the Upper Triassic Vancouver Group and the Lower Jurassic Bonanza Group, overlapped by sediments of the Cretaceous Nanaimo Group. These sequences have been subsequently intruded by stocks of the Jurassic Island Plutonic Suite (formerly the Island Intrusions). Tertiary intrusions (previously called Catface Intrusions) also disrupt the strata and have recently been divided into the Mount Washington and Tofino intrusive suites. The former are Late Eocene to Early Oligocene in age and are found mainly in the Cowichan uplift and Mount Washington areas; the latter are Early to Middle Eocene in age and are found in the Tofino-Kennedy Lake area.

 

The Paleozoic strata is an important exploration target and is exposed mainly within three uplifts: (1) Buttle Lake; (2) Cowichan; and (3) Nanoose. In the Buttle Lake uplift, Westmin Resources has a 4000 tonnes per day mill operating on its Myra Falls (092F 330) polymetallic volcanogenic massive sulphide deposits. Reserves (at the beginning of 1996) total more than 11 million tonnes grading 1.5 grams per tonne gold, 27.5 grams per tonnne silver, 1.6 per cent copper, 0.3 per cent lead, and 6.1 per cent zinc.

The Mount Washington Copper (092F 117) past producer is a porphyry-copper deposit, with an epithermal overprint, containing gold and silver. The nearby Domineer (Lakeview) (092F 116) epithermal deposit contains 550,000 tonnes grading 6.75 grams per tonne gold and 32.23 grams per tonne silver. The Catface (092F 120) porphyry-copper deposit, located near the southwest corner of the map area, contains 181,400,000 tonnes of ore grading 0.45 per cent copper.

 

Coal has played an important role in the development of the region, with over 50 million tonnes having been mined from Nanaimo Group strata. The Quinsam coal mine (092F 319) has reserves of about 44 million tonnes of which 36 million tonnes are proven high-quality thermal coal. Production is expected to reach capacity of 125,000 tonnes per month by the first quarter of 1997. The Quinsam Coal Corporation has expanded the coal reserve of its Tsable River coal property (092F 333) to 38.5 million tonnes by drilling 27 holes in 1996.

 

Texada Island contains a varied suite of polymetallic skarns, that between 1896 and 1976, produced 10 million tonnes of magnetite iron ore, 35,898 tonnes of copper, 39.6 tonnes of silver and 3.3 tonnes of gold. Three quarries (Gillies Bay (092F 395)), Blubber Bay (092F 479) and Imperial (092F 394)) produce about 5 million tonnes per year of high calcium limestone, largely for the manufacture of cement and lime.

 

Other important deposits on the Vancouver Island portion of the Alberni map area include the Debbie (092F 079) (gold, silver) Villalta (092F 384) (gold, silver), Bear (092F 044) (gold, silver, copper), Maktush (092F 012) (gold, silver, copper), and Argonaut (Iron Hill) (092F 075). A proposal has been put forward to recover fine-grained magnetite and garnet from the tailings and waste pile of the latter.

The mainland section of the map area occurs within the Coast Crystalline belt and is underlain mainly by granitic rocks of the Tertiary to Jurassic Coast Plutonic Complex. Dimension stone (granodiorite) is presently being quarried at Granite Island (092F 196) and until recently was also quarried on nearby Nelson and Fox islands. To the north, the Lang Bay kaolin clay deposit (092F 137) has a reserve of about 6 million tonnes of 15 per cent kaolin. Metallic minerals have been mined in two skarn occurrences; a number porphyry-type deposits are also documented.

 

 

SELECTED REGIONAL REFERENCES (NTS 092F - ALBERNI)

Bacon, W.R. (1957): Geology of Lower Jervis Inlet, British Columbia; B.C. Ministry of Energy, Mines
    and Petroleum Resources
, Bulletin 39.

Carson, D.J.T. (1968): Metallogenic Study of Vancouver Island with Emphasis on the Relationship of
    Plutonic Rocks and Mineral Deposits, Ph.D. Thesis, Carleton University.

Carson, D.J.T. (1973): The Plutonic Rocks of Vancouver Island, British Columbia; Geological Survey
    of Canada
, Paper 72-44.
Cathyl-Bickford, C. Gwyneth (2001): Lithostratigraphy of the Comox and Trent River Formations in
    the Comox Coalfield, Vancouver Island (92F/7,10,11,14) (PDF document 176 Kb).  B.C. Ministry of
    Energy and Mines
, GeoFile 2001-1.

Clapp, C.H. (1912): Southern Vancouver Island; Geological Survey of Canada, Memoir 13 (includes
    Map 17A).

Clapp, C.H. (1914): Geology of the Nanaimo Map-area; Geological Survey of Canada, Memoir 51.

Eastwood, G.E.P. (1968): Geology of the Kennedy Lake Area, Vancouver Island; B.C. Ministry of
    Energy, Mines and Petroleum Resources
, Bulletin 55.

Eastwood, G.E.P. (1976): Southern Vancouver Island (NTS 092C/09, /14, 092F/02); B.C. Ministry of
    Energy, Mines and Petroleum Resources
, Geological Fieldwork 1975.

Eastwood, G.E.P. (1978): Vancouver Island (092C/15, 092L/07, /11); B.C. Ministry of Energy, Mines
    and Petroleum Resources
, Geological Fieldwork 1977.

Eastwood, G.E.P. (1982): Upper Sutton Creek Area (092C/16); B.C. Ministry of Energy, Mines and
    Petroleum Resources
, Geological Fieldwork 1981.

Eastwood, G.E.P. (1984): Geology of the Quinsam Lake Area, Vancouver Island; B.C. Ministry of
    Energy Mines and Petroleum Resources
, Paper 1984-3.

Eastwood, G.E.P. (1985): 1977 - Vernon Ridge Area (092C/15E, /16W); B.C. Ministry of Energy,
    Mines and Petroleum Resources
, Geology in British Columbia, 1977-1981.

Gravel, J.L., Jackaman, W., Matysek, P.F. (1990): 1989 Regional Geochemical Survey, Southern
    Vancouver Island and Lower Mainland (92B, 92C, 92F & 92G); B.C. Ministry of Energy, Mines and
    Petroleum Resources
, Geological Fieldwork 1989.

Hudson, R. (1997): A Field Guide to Gold, Gemstone and Mineral Sites of British Columbia, Vol. 1:
    Vancouver Island; Orca Book Publishers, pp. 132-166.

Jeffrey, W.G. (1964): Preliminary Geological Map, Buttle Lake Area; B.C. Ministry of Energy, Mines
    and Petroleum Resources,
Geological Map (unnumbered).

Juras, S.S. (1987): Geology of the Polymetallic Buttle Lake Camp, with Emphasis on Price Hillside,
    Central Vancouver Island, British Columbia, Canada; Ph.D. Thesis, University of British Columbia.
Katnick, D.C.; Mustard, P.S. (2001): Geology of Denman and Hornby Islands, British Columbia.  B.C.
    Ministry of Energy and Mines
, Geoscience Map 2001-3.

Massey, N.W.D. and Friday, S.J. (1987): Geology of the Cowichan Lake Area, Vancouver Island;
    B.C. Ministry of Energy, Mines and Petroleum Resources, Geological Fieldwork 1986.

Massey, N.W.D., Friday, S.J., Tercier, P.E., Rublee, V.J. (1987): Geology of the Cowichan Lake
    Area, Vancouver Island; B.C. Ministry of Energy, Mines and Petroleum Resources, Open File Map
    1987-2
, 1:20,000.

Massey, N.W.D. and Friday, S.J. (1988): Geology of the Port Alberni - Nanaimo Lakes Area,
    Vancouver Island; B.C. Ministry of Energy, Mines and Petroleum Resources
    Geological Fieldwork 1988.

Massey, N.W.D., Friday, S.J., Tercier, P.E., Potter, T.E. (1987): Geology of the Duncan and
    Chemainus River Area, Vancouver Island; B.C. Ministry of Energy, Mines and Petroleum Resources,
    Open File Map 1988-8, 1:50,000 and 1:20,000.

Massey, N.W.D. and Friday, S.J. (1988): Geology of the Chemainus River - Duncan Area,
    Vancouver Island; B.C. Ministry of Energy, Mines and Petroleum Resources, Geological Fieldwork
    1987
.

Massey, N.W.D., Riddell, J.M., and Dumais, S.E. (1989): Geology of the Port Alberni - Nanaimo
    Lakes Area; B.C. Ministry of Energy, Mines and Petroleum Resources, Open File Map 1989-6,
    1:50,000 and 1:20,000.

Massey, N.W.D., Day, S.J. (1989): Moss-Mat Stream Sediment Sampling in the Port Alberni -
    Nanaimo Lakes Area; B.C. Ministry of Energy, Mines and Petroleum Resources, Exploration in British
    Columbia 1988
, page B55.

Massey, N.W.D., Friday, S.J., Riddell, J.M., and Dumais, S.E. (1991): Geology of the Port Alberni -
    Nanaimo Lakes Area; B.C. Ministry of Energy, Mines and Petroleum Resources, Geoscience Map
    1991-1
, 1:50,000 (with Paper 1992-2).

Massey, N.W.D., Friday, S.J., Tercier, P.E., Rublee, V.J. and Potter, T.E. (1991): Geology of the
    Cowichan Lake Area; B.C. Ministry of Energy, Mines and Petroleum Resources, Geoscience Map
    1991-2
, 1:50,000 (with Paper 1992-3).

Massey, N.W.D., Friday, S.J., Tercier, P.E., Potter, T.E. (1991): Geology of the Duncan Area; B.C.
    Ministry of Energy, Mines and Petroleum Resources
, Geoscience Map 1991-3, 1:50,000 (with Paper
    1992-4
).

Massey, N.W.D. (1992): Geology and Mineral Resources of the Alberni - Nanaimo Lakes Sheet; B.C.
  
 Ministry of Energy, Mines and Petroleum Resources, Paper 1992-2.

Massey, N.W.D. (1992): Geology and Mineral Resources of the Cowichan Lake Sheet; B.C. Ministry of
    Energy, Mines and Petroleum Resources
, Paper 1992-3.

Massey, N.W.D. (1992): Geology and Mineral Resources of the Duncan Sheet; B.C. Ministry of
    Energy, Mines and Petroleum Resources
, Paper 1992-4.

Massey, N.W.D. (1992): Mineral Potential of the Duncan Area; B.C. Ministry of Energy, Mines and
    Petroleum Resources
, Mineral Potential Map 1992-3.

Massey, N.W.D. (1994): The Vancouver Island Mineral Potential Project (92B, C,F,G,K,L and 102I;
    B.C. Ministry of Energy, Mines and Petroleum Resources, Geological Fieldwork 1994.

Massey, N.W.D. (1995): Geological Compilation, Vancouver Island, B.C. Ministry of Energy, Mines and
    Petroleum Resources
, Open File 1994-6, 1: 250,000.

McConnell, R.G. (1914): Texada Island, B.C.; Geological Survey of Canada, Memoir 58.

Muller, J.E. (1968): Geology and Mineral Deposits of the Alberni Map Area; Geological Survey of

   Canada, Paper 68-50 (contains Map 17-1968).

Muller, J.E. (1977): Geology of Vancouver Island; Geological Survey of Canada, Open File 463, 1:
    250,000.

Muller, J.E. (1980): The Paleozoic Sicker Group of Vancouver Island, British Columbia; Geological
    Survey of Canada
, Paper 79-30.

Roddick, J.A., Woodsworth, G.J., Compilers (1979): Geology of Vancouver West Half and Mainland
    Part of Alberni; Geological Survey of Canada, Open File 611, 1:125,000.

Roddick, J.A., Muller, J.E. and Okulitch, A.V., Compilers (1976): Fraser River; Geological Survey
    of Canada
, Map 1386A, 1: 1,000,000.

Sargent, H. (1940): Preliminary Report on the Bedwell River Area, Vancouver Island, British
    Columbia; B.C. Ministry of Energy, Mines and Petroleum Resources, Bulletin 8.

Sargent, H. (1941): Supplementary Report on the Bedwell River Area, Vancouver Island, British
    Columbia; B.C. Ministry of Energy, Mines and Petroleum Resources, Bulletin 13.

Webster, I.C.L., Ray, G.E. (1990): Geology and Mineral Deposits of Northern Texada Island; B.C.
  
 Ministry of Energy, Mines and Petroleum Resources, Geological Fieldwork 1989.

Webster, I.C.L., Ray, G.E. (1990): Geology and Mineral Deposits of Northern Texada Island; B.C.
 

Ministry of Energy, Mines and Petroleum Resources, Open File 1990-3

 

BC Geological Survey Publications for NTS 092F