Finnbear

Occurrence, Probably inactive

Commodities and mineralogy

Main commodities Au

Geographic location

Quadrangle map, 1:250,000-scale LC
Quadrangle map, 1:63,360-scale A-6
Latitude 60.12
Longitude -155.09
Nearby scientific data Find additional scientific data near this location
Location and accuracy Midway between the western end of Long Lake and Chulitna River, in Sec. 3, T. 1 S., R. 34 W., of the Seward Meridian. Accurate within 500 meters.

Geologic setting

Geologic description

Only information is reported by the U.S. Bureau of Mines (1995) as a lode gold deposit.
The geologic map (Nelson and others, 1983) indicates undivided Quaternary deposits in the area of the occurrence. Bedrock is about 2.8 km north and south of the occurrence. To the north, the bedrock consists of Tertiary volcanic rocks (Tv) and Cretaceous to Tertiary medium-grained granite (TKi11). The volcanic rocks include rhyolitic breccia, ash-flow tuff, flows, felsic intrusive rocks, and subordinate mafic to intermediate flows. Potassium-argon ages for Unit Tv range from 56.2 to 62.7 m.y. (Eakins and others, 1978). To the south, the bedrock is Tertiary mafic to intermediate volcanic flows (Nelson and others, 1983; unit Tvf).
Geologic map unit (-155.092209840844, 60.1193175065907)
Mineral deposit model Unknown
Age of mineralization Unknown.
Alteration of deposit Unknown

Production and reserves

Workings or exploration Unknown
Indication of production None
Reserve estimates No reserves
Production notes No production

Additional comments

MAS/MILS sequence number 0020930008 (Bureau of Mines, 1995).

References