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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  04-Apr-2022 by Karl A. Flower (KAF)

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NMI 104K8 Cu3
Name MB, TATSAMENIE LAKE WEST Mining Division Atlin
BCGS Map 104K039
Status Showing NTS Map 104K08W
Latitude 058º 19' 59'' UTM 08 (NAD 83)
Longitude 132º 22' 06'' Northing 6468804
Easting 654084
Commodities Copper Deposit Types
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

In the area north of Tatsamenie Lake, pre-Upper Triassic tuffs, phyllites, siltstones and limestones are underlain by Permian limestones of the Stikinia Terrane. These rocks are intruded by plutonic rocks associated with three separate igneous events. These consist of foliated diorite of Triassic Age, unfoliated diorite of Jurassic Age and feldspar porphyry basaltic dykes of the Sloko Group of Cretaceous to Tertiary Age.

The volcanics and sediments are pervasively silicified and pyritized. Chalcocite occurs in the rocks.

EMPR ASS RPT 7610, 39429, 40294
GSC MAP 6-1960; 1262A
GSC MEM *362, p. 53
EMPR PF (RPTS by Lefebure, D. (1987))
Placer Dome File
Burrell, H., Deiss, A.M. (2021-06-23): Thorn Property NI 43-101 Technical Report Sutlahine River Area, British Columbia, Atlin Mining Division