|Quadrangle map, 1:250,000-scale||NM|
|Quadrangle map, 1:63,360-scale||D-2|
|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 descriptionRulby 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.|
|Workings or exploration||Some gold was produced by pan, rocker, or other small scale operations in the early 1900s.|
|Indication of production||Yes; small|
Cobb, E.H., 1972, Metallic mineral resources map of the Nome quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-463, 2 sheets, scale 1:250,000.
Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Nome quadrangle, Alaska: U.S. Geological Survey Open-File report 78-93, 213 p.
|Reporters||C.C. Hawley and Travis L. Hudson|
|Last report date||10/22/1999|