Coffee Creek (the upper portion)

Mine, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale BN
Quadrangle map, 1:63,360-scale B-6
Latitude 65.302
Longitude -164.803
Nearby scientific data Find additional scientific data near this location
Location and accuracy Coffee Creek crosses the Nome-Taylor road at about mile 74 and again at about almost mile 75. The upper part of Coffee Creek that has been placer mined is 5,000 feet upstream from the road crossing at mile 74. About 1,500 feet of the drainage was open-cut mined at this location (Sainsbury and others, 1969). This is locality 43 of Cobb (1972; MF 417).

Geologic setting

Geologic description

This small area of placer workings is primarily known from the mapping of Sainsbury and others (1969). Early references to a residual gold placer near the head of Coffee Creek (Collier and others, 1908; Cobb, 1975, OFR 75-429) are for the Wonder Gulch tributary (BN005)\ and not this location. Thick muck deposits are present on Coffee Creek and bedrock is not exposed in this area. Bedrock here is expected to be low grade, Lower Paleozoic metasedimentary rocks like those exposed on lower parts of Coffee Creek and nearby uplands (Till and others, 1986).
Geologic map unit (-164.805660981889, 65.3012613635945)
Mineral deposit model Placer Au-PGE (Cox and Singer; model 39a).
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration Open-cut placer mining, probably dozer and sluice operations, took place along 1,500 feet of the active drainage.
Indication of production Yes; small

References

MRDS Number A012739
Reporters Travis L. Hudson (Applied Geology)
Last report date 3/15/1999