MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 093B 005

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

SUMMARY

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		NMI	093B9 Cu1
Name	MANDERFIELD, COPPER KING, POLLYANNA, GIBRALTAR	Mining Division	Cariboo
		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.

Bibliography

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

EMPR PFD 860002, 812033, 821842, 21200