Elephant Creek

Mine, Undetermined

Commodities and mineralogy

Main commodities Au
Other commodities W
Ore minerals gold; scheelite

Geographic location

Quadrangle map, 1:250,000-scale RM
Quadrangle map, 1:63,360-scale D-8
Latitude 61.861
Longitude -161.859
Nearby scientific data Find additional scientific data near this location
Location and accuracy Elephant Creek flows north to Wilson Creek from headwaters 1.7 miles east of the summit of Mount Okumiak. Placer mining may have taken place at least locally along about 2 miles of its length. The map site is at an elevation of about 350 feet in the southeast corner of sec. 35, T. 21 N., R. 69 W., of the Seward Meridian. This is locality 9 of Hoare and Cobb (1972, 1977).

Geologic setting

Geologic description

The trail development along Elephant Creek suggests that placer gold mining may have taken place at least locally along about 2 miles of its length upstream from Wilson Creek (RM002). The placer gold was discovered in 1914, and hydraulic mining was under way by 1916. The gold is in modern stream deposits and is accompanied by minor scheelite (Joesting, 1942). Bedrock in the Elephant Creek drainage is sedimentary and igneous rocks of the Gemuk Group that are locally intruded by Mesozoic or Tertiary granitic rocks (Hoare and Coonrad, 1959). The sedimentary rocks include chert, siltstone, sandstone, and conglomerate, and the intrusive rocks include biotite quartz monzonite, diorite, gabbro, hornblende porphyry, and felsic rocks (Bull and Schneider, 1997).
Geologic map unit (-161.861376058163, 61.8602577973839)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration Underground mining methods were used before 1916; hydraulic methods were used from 1916 intermittently until at least 1940.
Indication of production Yes; small