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File Created: 02-May-1988 by Larry Jones (LDJ)
Last Edit:  04-Apr-2022 by Karl A. Flower (KAF)

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Name MISTY Mining Division Atlin
BCGS Map 104K029
Status Showing NTS Map 104K08W
Latitude 058º 16' 02'' UTM 08 (NAD 83)
Longitude 132º 19' 20'' Northing 6461584
Easting 657075
Commodities Gold Deposit Types
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

In the Tatsamenie Lake area, intensely folded and regionally metamorphosed Permian, Triassic and older strata are separated from less folded and less metamorphosed Mesozoic sedimentary and volcanic rocks by a pre-Upper Triassic unconformity. Hornblende diorite and quartz-monzonite of Juro-Triassic age intrude the pre-Upper Triassic rocks. These are commonly altered to chlorite, hematite and epidote. The Mesozoic strata are overlain unconformably by flat-lying Upper Tertiary and Pleistocene plateau basalts of the Level Mountain Group.

A major north to northwest trending fault, known as the Ophir Break Zone, extends through the area for over 10 kilometres, and is defined by areas of intense fracturing with abundant slickensiding; areas of carbonaceous and siliceous black siltstone and gouge; and linear quartz-iron carbonate-pyrite and quartz-dolomite alteration zones.

The pre-Upper Triassic rocks consist of fine-grained crystal to lapilli tuff, phyllite, limestone, siltstone and intraformational breccia. These are considered to be part of the Stikinia Terrane.

Minor gold mineralization, associated with pyrite, occurs within tuff near the West Wall fault. A sample assayed over 10.0 grams per tonne gold (Assessment Report 11408).

EMPR EXPL 1982-394; 1983-542; 1984-398; 1985-395
EMPR FIELDWORK 1985, pp. 175-183
GSC MAP 6-1960; 1262A
V STOCKWATCH July 3,10, 1987
GCNL #66,#117, 1987
Western Investment News May, 1987
Burrell, H., Deiss, A.M. (2021-06-23): Thorn Property NI 43-101 Technical Report Sutlahine River Area, British Columbia, Atlin Mining Division