Rulby Creek

Mine, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale NM
Quadrangle map, 1:63,360-scale D-2
Latitude 64.7763
Longitude -165.782
Nearby scientific data Find additional scientific data near this location
Location and accuracy Rulby Creek is a small east tributary to Sinuk River (NM015). The mouth of Rulby Creek is 0.6 mile downstream of the mouth of American Creek. It is locality 68 of Cobb (1972 [MF 463], 1978 [OFR 78-93]).

Geologic setting

Geologic description

Rulby Creek was prospected and produced a little placer gold in the early 1900s (Collier and others, 1908). The creek flows across a higher gravel deposit, probably glacial, that carries small amounts of gold. This locality is within an area of iron and related base metal mineralization (NM014, NM014, NM017, NM018, NM019, and NM020) that locally includes some anomalous gold values (for example, NM014).
Geologic map unit (-165.784638551451, 64.7755352739694)
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 Some gold was produced by pan, rocker, or other small scale operations in the early 1900s.
Indication of production Yes; small