British Columbia Ministry of Energy, Mines and Natural Gas and Responsible for Housing
News | The Premier Online | Ministries & Organizations | Job Opportunities | Main Index

MINFILE Home page  ARIS Home page  MINFILE Search page  Property File Search
Help Help
File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  06-Nov-2014 by Laura deGroot (LDG)

Summary Help Help

NMI
Name BJ, HOLLAND LAKE QUARRY Mining Division Nanaimo
BCGS Map 092B091
Status Showing NTS Map 092B13W
Latitude 048º 57' 11'' UTM 10 (NAD 83)
Longitude 123º 51' 45'' Northing 5422596
Easting 436856
Commodities Granite, Building Stone, Copper Deposit Types R03 : Dimension stone - granite
M02 : Tholeiitic intrusion-hosted Ni-Cu
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

At the BJ occurrence mineralization occurs in the northeast contact zone of an Early to Middle Jurassic Island Plutonic Suite (formerly the Island Intrusions) body, and rocks of the Devonian Nitinat Formation, Sicker Group. The rock immediately adjacent the stock is black amphibolite cut by many small granitic dykes and pegmatitic vein-dykes. It passes northeastward through migmatite to somewhat schistose and recrystallized pyroxene basalt (Nitinat Formation). To the southeast the basalt is in contact with gabbro (informally known as the Mount Hall Gabbro) which, like the amphibolite, is cut by many small granitic dykes.

The amphibolite and migmatite contain wispy zones, 30 to 60 centimetres wide, of disseminated and seam pyrite accompanied by less chalcopyrite. These zones are exposed only in one place, and only scattered occurrences of sparsely disseminated pyrite were found in the basalt and gabbro.

A quarry was reported to have been opened up in the contact zone in order to provide rock-facing for dams at each end of Holland Lake.

Bibliography
EMPR FIELDWORK *1980, p. 24; 1987, pp. 81-91
EMPR OF 1988-8
EMPR PF (Prospectors Report 1996-6 by Karen Campbell)
GSC MAP 42A; 1386A; 1553A
GSC MEM 13; 36; 96
GSC OF 463
GSC P 1972-44; 1975-1A, p. 23; 1979-30
PERS COMM Massey, N.W.D., 1991
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
Hudson, R. (1997): A Field Guide to Gold, Gemstone & Mineral Sites of
British Columbia, Vol. 1: Vancouver Island, p. 111
EMPR PFD 827268

COPYRIGHT | DISCLAIMER | PRIVACY | ACCESSIBILITY