MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 082FSW276

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	NORTH STAR (L.4149), NORTHSTAR, GREAT WESTERN GROUP	Mining Division	Nelson
		BCGS Map	082F044
Status	Showing	NTS Map	082F06W
Latitude	049º 26' 14''	UTM	11 (NAD 83)
Longitude	117º 18' 45''	Northing	5476108
		Easting	477344
Commodities	Gold	Deposit Types	I01 : Au-quartz veins I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt	Omineca	Terrane	Quesnel, Plutonic Rocks

Capsule Geology

The North Star showing is located about 6 kilometres southwest of Nelson on the south slopes of Morning Mountain. Old workings date back to the early 1900's.

The area is underlain by schistose volcanic rocks comprising augite basalt flows, flow breccias, subvolcanic intrusions and mafic tuff of the Lower Jurassic Elise Formation, Rossland Group. These are intruded by plagioclase porphyry of the Jurassic Silver King Porphyry. The Silver King shear zone, trending northwest, is immediately to the south and west.

A pyritized and silicified shear zone over 12 metres wide parallels the strike and dip of the schistose volcanics. The best mineralized section is 2.4 metres wide between the hanging wall and a 0.6-metre thick lamprophyre dyke. Locally the vein parallels the contact. Host rocks to the sheared vein are locally highly silicified.

The best mineralized section averaged 9.26 grams per tonne gold while a 6 metre section of rusty, weathered rock on the footwall side of the lamprophyre dyke assayed about 3.4 grams per tonne gold (Minister of Mines Annual Report 1932, page 183).

Diamond drilling (three holes) was conducted on the claim in 1980, the results are unknown (Property File - Lectus Developments Ltd., Prospectus, Aug. 4, 1987).

Bibliography

EMPR AR 1900-986; *1932-183

EMPR ASS RPT *8614, 19492, 19503, 20063

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; 2002, pp. 113-151

EMPR MAP 7685G; RGS 1977; 8480G

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

EMPR PF (In 082FSW333: Lectus Developments Ltd., Prospectus, Aug. 4, 1987)

GSC MAP *52-13A; 1090A; 1091A

GSC MEM 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

EMPR PFD 650036, 822816, 822817, 822818, 822819, 822820, 822821, 822822, 822824, 822825, 822826, 822829, 822830