Unnamed (at east end of Devils Canyon)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au; Pt
Other commodities Ag; Cu; Sn; Zn
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale D-5
Latitude 62.8016
Longitude -149.2295
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence represents several sites where placer samples were collected in north-flowing tributaries along an 8-mile-long section of the Susitna River in Devils Canyon. The sites extend upstream from the west edge of sec. 31; the midpoint of these sites is in the SW1/4 sec. 2, T. 31 N., R. 1 E., Seward Meridian.

Geologic setting

Geologic description

Gold and platinum occur in alluvial gravel deposits in north-flowing tributaries to the Susitna River in Devils Canyon (Kurtak and others, 1992). Stream-sediment samples collected from several sites along the Susitna River contain up to 0.002 ounce of gold per cubic yard, 120 parts per million silver, 0.2 percent copper, 0.2 percent zinc, 180 parts per million tin, and 0.86 part per million platinum. The rocks in the area consist of Tertiary granodiorite (Csejtey and others, 1978).
Geologic map unit (-149.231756452504, 62.8011181624636)
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 Sampling of alluvial gravel by U.S. Bureau of Mines (Kurtak and others, 1991).
Indication of production None

Additional comments

MAS/MILS number 20760083.

References