Mulchatna River

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale TA
Quadrangle map, 1:63,360-scale B-1
Latitude 60.3
Longitude -156.1
Nearby scientific data Find additional scientific data near this location
Location and accuracy Martin and Katz (1912) reported that flour gold was present on gravel bars of the Mulchatna River above the mouth of the Koktalee (Koktuli) River. The map site of this occurrence is a gravel bar about 1.5 mile above the mouth of Keefer Creek. It is arbitrarily chosen to represent the general area of occurrences noted by Martin and Katz (1912). Cobb (1972 [MF 384]; 1976 [OF 76-606]) included these occurrences under the name 'Mulchatna River'.

Geologic setting

Geologic description

Martin and Katz (1912) reported that fine flour gold was present on gravel bars of the Mulchatna River above the mouth of the Koktalee (Koktuli) River. The Mulchatna River approximately coincides with a major structural boundary between mid-Cretaceous Kuskokwim Group clastic rocks to the west and Mesozoic sedimentary and igneous rocks to the east (Decker and others, 1994).
Geologic map unit (-156.102231631018, 60.299301745634)
Mineral deposit model Placer Au-PGE (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a
Age of mineralization Holocene.

Production and reserves

Indication of production None

References

MRDS Number 10308359

References

Reporters Travis L. Hudson
Last report date 12/30/2000