Ptarmigan Creek (tributary of Birch Creek)

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale CI
Quadrangle map, 1:63,360-scale B-4
Latitude 65.44
Longitude -145.519
Nearby scientific data Find additional scientific data near this location
Location and accuracy Ptarmigan Creek is a tributary of Birch Creek. It flows south from Porcupine Dome and crosses the Steese Highway in the NW1/4 NE1/4 sec. 17, T. 7 N., R. 11 E.

Geologic setting

Geologic description

Headwaters of Ptarmigan Creek are on the south slopes of Porcupine Dome. Bedrock underlying Ptarmigan Creek is the Upper Quartzite and Upper Schist units mapped by Wiltse and others (1995). The Upper Quartzite consists of porphyroblastic-albite-chlorite-muscovite-quartz schist, quartzites and micaceous quartzites. The Upper Schist is a mixed unit dominated by variably garnetiferous, pelitic quartz-muscovite schist, muscovite-quartz schist and chlorite-quartz-muscovite schist with distinct intervals of garnetiferous calcareous albite-porphyroblastic muscovite-chlorite schist.
Sediments are said to contain large amounts of copper (Burand, 1965). Gold can be readily panned from the thin veneer of gravels on the bedrock in Ptarmigan Creek just upstream from its junction with Eagle Creek (Lampright, 1996, p. 75). Known years of activity are 1925, 1953, 1954 and 1969 through 1982 (Menzie and others, 1983, p. 51).
Geologic map unit (-145.521455762796, 65.4396219609704)
Mineral deposit model Gold placer deposit (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a

Production and reserves

Workings or exploration Known years of activity are 1925, 1953, 1954 and 1969 through 1982 (Menzie and others, 1983, p. 51).
Indication of production None


MRDS Number 10307349


Reporters C.J. Freeman, J.R. Guidetti Schaefer, A.S. Clements (Avalon Development Corporation)
Last report date 9/14/1998