Alameda Creek

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold
Gangue minerals magnetite

Geographic location

Quadrangle map, 1:250,000-scale CA
Quadrangle map, 1:63,360-scale A-5
Latitude 65.03
Longitude -161.05
Nearby scientific data Find additional scientific data near this location
Location and accuracy Placer ground located east of headwaters of Alameda Creek. The map site is in section 23, T. 5 S., R. 12 W., of the Kateel River Meridian. Cobb, 1972 (MF-386), location 46.

Geologic setting

Geologic description

This gold placer prospect occurs in a short section of Alameda Creek. The deposit apparently is in a paleochannel uncut by the present stream. The deposit was explored by shafts, from which a small amount of gold was recovered. Pan concentrates contained a little gold, much magnetite and some undecomposed sulfides. Gravel on bedrock contained about $0.01 per pan (gold at $20.67/ounce) (Smith and Eakin, 1911).
Geologic map unit (-161.0525944867, 65.0293219883245)
Mineral deposit model Placer Au-PGE (Cox and Singer, 1986; model 39a).
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration In the early 1900s one shaft was sunk 192 feet without reaching bedrock (Smith and Eakin, 1911). It was mainly in well-rounded quartz gravel. Another shaft hit lava at 32 feet. Gravel on bedrock contained about $0.01 per pan (gold at $20.67/ounce).
Indication of production None
Production notes Gold was too scarce to support mining operations in 1909.

Additional comments

Stream gradient approximately 50 feet per mile.

References