MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 104M 018

File Created:	24-Jul-1985	by	BC Geological Survey (BCGS)
Last Edit:	30-Sep-2021	by	Garry J. Payie (GJP)

SUMMARY

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		NMI	104M8 Cu3
Name	EDGAR LAKE	Mining Division	Atlin
		BCGS Map	104M040
Status	Showing	NTS Map	104M08E
Latitude	059º 23' 29''	UTM	08 (NAD 83)
Longitude	134º 10' 17''	Northing	6583928
		Easting	547063
Commodities	Copper	Deposit Types	M01 : Flood Basalt-Associated Ni-Cu
Tectonic Belt	Intermontane	Terrane	Cache Creek, Stikine, Nisling

Capsule Geology

The Edgar Lake showing was first recorded on the Geological Survey of Canada Map 19-1957 (by R.L. Christie), where it shown as a copper symbol on the west shore of Edgar Lake (GSC Map 19-1957). Upper Triassic Stuhini Group basalts and basaltic tuffs underlie the occurrence. Native copper is reported to occur in the showing similar to the Copper Island (104M 020). Quartz and calcite veins with chalcopyrite and bornite are reported to occur as well.

More recently, it was described by Mihalynuk and Mountjoy as native copper occurring "in calcite veins and disseminations in Stuhini pyroxene-phyric lapilli tuffs" (Open File 1990-4, Sheet 3 of 3).

Bibliography

EMPR AR 1918-95

EMPR BULL 105

EMPR FIELDWORK 1985, p. 184, Fig. 26-1; 1989, pp. 175-179, *181-196, 197-203; 1990, pp. 139-144, 153-159

EMPR OF *1990-4

EMPR PF (In 104M General File - Claim map of 104M, 1970; Claim map of 104M 08 and 09, 1970)

EMPR PFD 812578, 812591, 812593, 812594, 812595, 812596, 812597, 812598, 812599, 802080, 841216, 841217, 841218, 841223, 671839, 671840, 674361, 674362

EMPR RGS 37, 1993

GSC MAP *19-1957; 94A; 711; 1418A; 1426

GSC MEM 37

GSC OF 427; 2225, p. 42; 2694

GSC P 69-01A, pp. 23-27; 77-01A; 78-01A, pp. 69-70; 90-01E, pp. 113-119; 91-01A, pp. 147-153; 92-01A

GSC SUM RPT 1906, pp. 26-32; 1911, pp. 27-58