Montana Creek

Prospect, Active

Commodities and mineralogy

Main commodities Ag; Au
Other commodities Sn; Ti; Zr
Ore minerals placer gold
Gangue minerals cassiterite; ilmenite; zircon

Geographic location

Quadrangle map, 1:250,000-scale MD
Quadrangle map, 1:63,360-scale C-6
Latitude 63.583
Longitude -155.98
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Montana placer prospect is located on about 2 miles (3.2 km) of Montana Creek, a tributary of Colorado Creek, from an elevation of 1,400 feet (427 m) to about 1,000 feet (304 m), in Section 21, T. 22 S., R. 15 E., of the Kateel River Meridian. The reporter visited the site in 1996.

Geologic setting

Geologic description

The Montana placer prospect consists of a left limit bench on Montana Creek over a distance of about 2 miles (3.2 km). Overburden ranges from 20 to 40 feet (6 m to 12 m) thick, and auriferous gravels average about 10 feet (3 m) thick. Reconnaissance drilling suggests that most values are on bedrock. The auriferous gravels are overlain by Quaternary eolian and colluvial deposits (Thorson and Guthrie, 1982). The Montana Creek Placer deposit is inferred to be Pleistocene, based on isotopically dated Quaternary units in Colorado Creek (Thorson and Guthrie, 1982).
Geologic map unit (-155.982377308627, 63.582389879112)
Mineral deposit model Placer Au-PGE (Cox and Singer, 1986; model 39c).
Mineral deposit model number 39c
Age of mineralization The Montana Creek Placer deposit is inferred to be Pleistocene, based on isotopically dated Quaternary units in Colorado Creek (Thorson and Guthrie, 1982).

Production and reserves

Workings or exploration The prospect was first mentioned by Mertie (1936). According to Steve Neirod and Ron Rosander (oral communication, 1982), a reconnaissance churn drilling program in the 1950s conducted by Strandberg and Sons Mines Inc. encountered a low grade gold-bearing paystreak of unknown extent.
Indication of production Undetermined
Reserve estimates None.
Production notes No production records have been found. In 1996 and 1997, a small exploration camp was being assembled at Colorado Creek for a placer drilling program on Montana Creek.

Additional comments

See Colorado Creek (MD014).

References