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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  18-Jun-2009 by Nicole Barlow (NB)

Summary Help Help

NMI 093B9 Cu1
BCGS Map 093B059
Status Showing NTS Map 093B09W
Latitude 052º 31' 11'' UTM 10 (NAD 83)
Longitude 122º 16' 30'' Northing 5819093
Easting 549193
Commodities Copper Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt Intermontane Terrane Cache Creek, Stikine
Capsule Geology

The Manderfield showing is located near the eastern margin of the Stikinia Terrane 305 metres north of the Pollyanna deposit (093B 006).

The dominant rock types in the region are metabasalt, limestone and argillaceous metasediments of the Mississippian to Triassic Cache Creek Group. These are intruded by the dioritic to quartz dioritic Granite Mountain Pluton and the (?)Cretaceous Sheridan Creek Pluton.

The Manderfield showing consists of a six metre wide quartz vein on the west side of a 15 metre wide shear within quartz diorite. Secondary copper minerals coated the vein which contained chalco- pyrite. It appears that the location of this vein is now within the Pollyana pit of the Gibraltar Mine.

EMPR AR 1925-A156; 1950-A106
EMPR ASS RPT 10567, 12452, *15945
EMPR EXPL 1984-295; 1987-C261; 1998-A1-A15
EMPR OF 1999-7
EMPR PF Rimfire (Sirola, W.M. (1961-04-04): Memos Re: Berglund Copper Property)
EMPR PF Cyprus Anvil (Cominco Ltd. (1967-01-10): Claims, Geology and Drill Holes Plan Map - Gibraltar)
EMPR PF Placer Dome (Ball, R., Lovett, D.W., Hyland, A., Simpson, Y., Fonseca, W. (1967): Field notes for Pollyanna, summer 1967)
GSC MAP 12-1959; 1538G