MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 082FSW251

File Created:	24-Jul-1985	by	BC Geological Survey (BCGS)
Last Edit:	06-Jun-1991	by	Dorthe E. Jakobsen (DEJ)

SUMMARY

Summary Help


		NMI
Name	FRESNO, STEWART 4, FRENU, TRASK, STEWART 2, LION, STEWART	Mining Division	Nelson
		BCGS Map	082F024
Status	Showing	NTS Map	082F06E
Latitude	049º 16' 40''	UTM	11 (NAD 83)
Longitude	117º 13' 50''	Northing	5458361
		Easting	483231
Commodities	Molybdenum	Deposit Types	L05 : Porphyry Mo (Low F- type)
Tectonic Belt	Omineca	Terrane	Quesnel, Plutonic Rocks

Capsule Geology

The Fresno showing is located on Quartz Creek, about 1.5 kilometres due west of Ymir. The showing was originally staked in 1902.

The area is underlain by basalt flows, flow breccias, subvolcanic intrusions and tuffaceous conglomerate of the Lower Jurassic Elise Formation, Rossland Group. These have been intruded by Late to Middle Jurassic Nelson Intrusions and Eocene Coryell Intrusions.

Molybdenite mineralization, with associated pyrite, is observed to occur as selvages on fracture surfaces within sheared, felsic intrusives.

The Trask workings are about 1 kilometre west of the Fresno showing but no specific details of the mineralization are recorded. The Lion was staked in 1949 and may in fact be the same as the Fresno showing.

Bibliography

EMPR AR 1966-212; 1967-243; 1968-240

EMPR ASS RPT *1083, *7074, 11670, 13166

EMPR BULL 41; 109

EMPR EXPL 1969-316; 1978-E55; 1979-57; 1980-51; 1983-57,65; 1984-40

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 MEM 308

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

EMPR PFD 823036, 823039, 823040