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File Created: 15-Mar-2021 by Karl A. Flower (KAF)
Last Edit:  25-Mar-2021 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name GOSSAN NO. 3, TR EAST, TAKLA-RAINBOW, TAKLA, TRS Mining Division Omineca
BCGS Map 093N064
Status Showing NTS Map 093N11W
Latitude 055º 38' 50'' UTM 10 (NAD 83)
Longitude 125º 18' 00'' Northing 6169216
Easting 355264
Commodities Copper, Gold Deposit Types
Tectonic Belt Intermontane Terrane Quesnel, Cache Creek
Capsule Geology

The Gossan No. 3 occurrence is located at an elevation of approximately 1650 metres on the west side of a north-trending ridge, approximately 16 kilometres southeast of Old Hogem. The Takla-Rainbow (MINFILE 093N 082) occurrence is located approximately 1.7 kilometres to the north-northwest.

Regionally, the area is underlain by undivided volcanic rocks of the Lower Jurassic Twin Creek Formation (Takla Group) that have been intruded by Lower Jurassic monzodioritic to gabbroic intrusive rocks and Lower Cretaceous granitic intrusive rocks of the Hogem Plutonic Suite. A complete summary of regional geology and structure can be found in the Takla-Rainbow (MINFILE 093N 082) occurrence.

Locally, a gossanous zone, referred to as the Gossan No. 3 zone, is hosted by fine-grained Takla volcanics (tuff?) with quartz-carbonate veins containing anomalous gold and copper values.

Zones of disseminated pyrite, chalcopyrite and molybdenite with malachite staining are reported associated with a dike-like structure in plagioclase phyric andesites, agglomerates and tuffs on a north-trending ridge, located approximately 600 metres to the southwest of the Gossan No. 3 zone.

In 1983, a rock sample (ERT-8) from the Gossan No. 3 zone assayed 0.056 per cent copper and 0.62 gram per tonne gold (Assessment Report 12162).

In 1990, two grab samples (TR-90-D1 and -R22) of quartz-carbonate veined tuff with trace pyrite and malachite from the Gossan No. 3 zone yielded 1.12 and 1.35 grams per tonne gold, respectively (Assessment Report 22372).

Work History

The area has been explored in conjunction with the nearby Takla-Rainbow (MINFILE 093N 082) occurrence and a complete exploration history can be found there.

Bibliography
EMPR BULL 70
EMPR FIELDWORK 1992, pp. 87-107
EMPR GEM 1971-202-203; 1972-451
EMPR OF 1993-4
GSC MAP 844A; 907A; 971A; 1424A
GSC MEM 252
GSC P 42-7; 45-6

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