Otter Creek

Prospect, Inactive

Commodities and mineralogy

Main commodities Ag; Au

Geographic location

Quadrangle map, 1:250,000-scale BN
Quadrangle map, 1:63,360-scale A-1
Latitude 65.09
Longitude -162.4
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is in the headwaters of Otter Creek, a west tributary to Tubutulik River on the south side of Death Valley. The mouth of Otter Creek is 4 miles south of Camp Haven. It is about 4.6 miles upstream from the mouthof the creek or 3,000 feet upstream of the dozer cuts (BN087) on the creek. A 20 foot-deep shaft near two decaying log cabins marks the locality (Herreid, 1965). This is locality 17 of Cobb (1972; MF 417; 1975; OFR 75-429).

Geologic setting

Geologic description

A caved shaft, estimated to be 20 feet deep, is located next to two decaying log cabins at this prospect. The shaft is in quartz-mica schist which contains less than 1 % sulfides along tiny quartz veins (Herreid, 1965). Grab samples of quartz-rich and quartz-poor schist from the shaft dump contained 0.03 ounces/ton Au (trace Ag) and 0.01 ounces/ton Au (0.27 ounces/ton Ag) respectively. Bedrock in the area is Lower Paleozoic metasedimentary rocks (Herreid, 1965; Till and others, 1986).
Geologic map unit (-162.402616852273, 65.0892980881965)
Mineral deposit model Low sulfide Au-quartz veins? (Cox and Singer, 1986; model 36a?).
Mineral deposit model number 36a?
Age of mineralization Cretaceous ?; Epigenetic mineralization in metamorphic rocks of Seward Peninsula is primarily of Cretaceous age.
Alteration of deposit Quartz veining in schist.

Production and reserves

Workings or exploration An old caved shaft, estimated to originally be 20 feet deep, is present here.
Indication of production None