MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 082FSW197

File Created:	24-Jul-1985	by	BC Geological Survey (BCGS)
Last Edit:	03-Jun-1991	by	Dorthe E. Jakobsen (DEJ)

SUMMARY

Summary Help


		NMI
Name	MYRTLE	Mining Division	Nelson
		BCGS Map	082F024
Status	Past Producer	NTS Map	082F06E
Latitude	049º 16' 57''	UTM	11 (NAD 83)
Longitude	117º 12' 54''	Northing	5458883
		Easting	484363
Commodities	Gold, Silver, Lead, Zinc	Deposit Types	I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt	Omineca	Terrane	Quesnel

Capsule Geology

The Myrtle occurrence is located within the Ymir townsite. Workings comprise an adit and a shaft.

The area is underlain by basalt flows, flow breccias and subvolcanic intrusions of the Lower Jurassic Elise Formation (Units Je1 and Je4) and sediments of the Lower Jurassic Ymir Group (Open File 1989-11). These are cut by the Mt. Elise shear zone.

A quartz vein, striking 025 degrees and dipping 50 degrees north, occurs in a fault or crush zone. The vein varies from 0.30 to 0.60 metre in width and is locally represented by shattered or brecciated country rock with quartz and mineralized sulphide streaks. Along strike, the zone is filled with well mineralized quartz gangue. Mineralization consists of pyrite, some galena and traces of sphalerite. The sulphides occur as masses and streaks in the vein and in the country rock. The vein is intersected by a lamprophyre dyke and is conformable with schistosity.

It is reported that 25 tonnes of hand sorted material was mined producing 528 grams of gold, 2053 grams of silver, 122 kilograms of lead and 183 kilograms of zinc. Higher assays were reported from grab samples in the adit and shaft.

Bibliography

EMPR AR 1934-A27; 1937-A39,E46; 1938-A36

EMPR BC METAL MM01043

EMPR BULL 41; 109

EMPR FIELDWORK 1980, pp. 149-158; 1981, pp. 28-32, pp. 176-186; 1987, pp. 19-30; 1988, pp. 33-43; 1989, pp. 247-249; 1990, pp. 291-300

EMPR MAP 7685G; RGS 1977; 8480G

EMPR OF 1988-1; *1989-11; 1991-16

GSC MAP 175A; 1090A

GSC MEM *191 p. 19; 308

GSC OF 1195

GSC P 52-13

Andrew, K.P.E. and Hoy, T. (1990): Structural Models for Precious Metal Deposits in Jurassic Arc Volcanic rocks of the Rossland Group, southeastern B.C.; abstract with program, G.A.C. - M.A.C. Annual Meeting, Vancouver, B.C., p. A3

Hoy, T. and Andrew, K.P.E. (1988): Geology, geochemistry and mineral deposits of the Lower Jurassic Rossland Group, southeastern British Columbia; abstract in Twelfth District 6 Meeting, Canadian Institute of Mining and Metallurgy, Fernie, B.C., pp. 11-12