MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 092INW060

File Created:	24-Jul-1985	by	BC Geological Survey (BCGS)
Last Edit:	13-Aug-1998	by	George Owsiacki (GO)

SUMMARY

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		NMI
Name	CORNWALL, CORNWALL GROUP, NITA, JEFF	Mining Division	Kamloops
		BCGS Map	092I073
Status	Showing	NTS Map	092I11W
Latitude	050º 42' 30''	UTM	10 (NAD 83)
Longitude	121º 25' 46''	Northing	5618568
		Easting	610892
Commodities	Copper	Deposit Types	K01 : Cu skarn L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt	Intermontane	Terrane	Cache Creek

Capsule Geology

Diorite intrudes a sequence of Carboniferous-Jurassic Cache Creek Complex greenstone, quartzite, siltstone, chert and Marble Canyon Formation (Cache Creek Complex) limestone. Small, irregular serpentinite bodies occur in the diorite.

The diorite contains abundant disseminated pyrrhotite and numerous fault and fracture zones which are mineralized with pyrrhotite, chalcopyrite, chalcocite, limonite and garnierite.

Work in 1969-71 comprised geochemical and geological surveys, and six trenches by G.G. Krause and Lone Creek Mines Ltd. In 1973, a ground magnetometer survey and geochemical survey was completed on behalf of Lone Creek Mines Ltd. In 1984-85, geochemical and geological surveys were completed on behalf of Desperado Resources Inc. on the Nita claim which appears to cover the original Cornwall showing.

Bibliography

EMPR AR 1898-1108

EMPR ASS RPT *2947, 3380, 4550, 4920, 12952, 13874

EMPR FIELDWORK 1977, pp. 89-95; 1981, pp. 270,271

EMPR GEM 1971-298; 1973-210

EMPR GEOLOGY 1977-1981, pp. 91-97

GSC MAP 1010A; 1386A; 42-1989

GSC MEM 262

GSC OF 165; 866; 980

GSC P 46-8; 47-10; 69-23; 73-1A, p. 212; 74-49; 81-1A, pp. 185-189, 217-221; 82-1A, pp. 293-297; 85-1A, pp. 349-358

CJES Vol.15, No.1 (January 1978), pp. 99-116

Grette, J.F. (1978): Cache Creek and Nicola Groups near Ashcroft, British Columbia, M.Sc. Thesis, University of British Columbia

EMPR PFD 823027