Dorothy Creek

Mine, Active?

Commodities and mineralogy

Main commodities Au
Other commodities Sb; W
Ore minerals gold; scheelite; stibnite

Geographic location

Quadrangle map, 1:250,000-scale NM
Quadrangle map, 1:63,360-scale D-1
Latitude 64.8237
Longitude -165.2347
Nearby scientific data Find additional scientific data near this location
Location and accuracy Dorothy Creek is a west tributary to upper Nome River. The mouth of Dorothy Creek is about 1.4 miles downstream from the mouth of Divide Creek, another west tributary to Nome River. Dorothy Creek may have been placer mined for gold over most of its lower 1.3 miles. This is locality 105 of Cobb (1972 [MF 463], 1978 [OFR 78-93]).

Geologic setting

Geologic description

Dorothy Creek was placer mined for gold as early as 1900, and by 1903 about 44,000 dollars or 2,125 ounces of gold had been produced (Collier and others, 1908). Some mining took place as recently as 1940 (Smith, 1942). The placer concentrate contained bladed stibnite crystals and minor scheelite (Coats, 1944; Anderson, 1947).
Bedrock in the Dorothy Creek drainage is mainly metasedimentary schist that lies structurally above a regionally extensive marble unit (Hummel, 1962 [MF 248]). Small orthogneiss bodies, greenstone bodies, and numerous quartz veins are present in the schist (Collier and others, 1908; Hummel, 1962 [MF 248]). The Wyoming prospect (NM110) is apparently an arsenopyrite- and (or) pyrite-bearing vein exposed along Dorothy Creek, and antimony occurrences (NM068, NM069) and the Bulk Gold prospects (NM071, NM072) occur on the ridge along the southwest headwaters of Dorothy Creek.
Geologic map unit (-165.237322912414, 64.8229424925121)
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 Dorothy Creek was placer mined as early as 1900 and by 1903 about 44,000 dollars or 2,125 ounces of gold had been produced (Collier and others, 1908). Some mining took place as recently as 1940 (Smith,1942).
Indication of production Yes; small
Production notes The produced gold reportedly assayed 14 to 15 dollars per ounce (Collier and others, 1908). The early mining was said to have been expensive and little profit was made (Moffit, 1913).

References