Unnamed (east of Alteration Creek)

Mine, Probably inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale MH
Quadrangle map, 1:63,360-scale A-1
Latitude 63.0118
Longitude -144.2015
Nearby scientific data Find additional scientific data near this location
Location and accuracy This placer mine is on an unnamed tributary of the Slana River that is about 1.5 miles east of Alteration Creek (see Richter, 1967). The placer mine site is at an elevation of about 3,200 feet. It is in the NW1/4 section 12, T. 14 N., R. 6 E., Copper River Meridian. The mine location corresponds to locality 1 of Richter (1967) and locality 36 on figure 5 of Cobb (1979 [OFR 79-238]), placer locality 19 in table 3 of Nokleberg and others (1991), and probably is Kardex site number KX68-118 of Heiner and Porter (1972).

Geologic setting

Geologic description

This placer mine is in a creek that drains granodiorite of probable Cretaceous age and Nikolai Greenstone of Late Triassic age (Richter and others, 1977). The Nikolai Greenstone has been metamorphosed to amphibolite near the Cretaceous (?) pluton.
The creek was mined on a small scale. The gold reportedly was angular,. and Richter (1967) inferred that it was locally derived.
Geologic map unit (-144.203725212497, 63.0114126158381)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a).
Mineral deposit model number 39a
Age of mineralization Holocene.
Alteration of deposit Metamorphism of greenstone to amphibolite.

Production and reserves

Workings or exploration The mine was operated by Newt Peterson of Tok Junction possibly in the 1940s and 1950s (Richter (1967). The claims were restaked as the Genesee group by J. Frey in 1966 (Heiner and Porter, 1972).
Indication of production Yes; small
Production notes Probably 100 ounces or less.

References