Tamarack Creek

Mine, Undetermined

Commodities and mineralogy

Main commodities Au
Other commodities Ag
Ore minerals gold; ilmenite; magnetite; native silver; pyrite

Geographic location

Quadrangle map, 1:250,000-scale OP
Quadrangle map, 1:63,360-scale A-2
Latitude 63.0946
Longitude -156.5206
Nearby scientific data Find additional scientific data near this location
Location and accuracy Tamarack Creek is a short, northwest-flowing tributary of Spruce Creek; Spruce Creek is about 3.5 miles south of Ophir. The coordinates are at the placer mine marked near the mouth of Tamarack Creek on the U.S. Geological Survey Ophir A-2 topographic map (1954, minor revisions 1965), in NW1/4 sec. 2, T. 28 S., R. 12 E., Kateel River Meridian. Tamarack Creek is locality 18 of Cobb (1972 [MF 367]). The location is accurate within 100 feet.

Geologic setting

Geologic description

The rocks in the vicinity of Tamarack creek are shale and siltstone. The creek probably also drains Cretaceous or Tertiary monzonite plutons, and dikes of various compositions (Chapman and others, 1985). These intrusive rocks probably are the source of the placer gold in Tamarack Creek (Bundtzen and others, 1987).
Heavy minerals in pan concentrates from Tamarack Creek include magnetite, ilmenite, pyrite, pyroxene, amphibole, and several grains of native silver (Bundtzen and others, 1987). Mertie (1936) reports that a pay streak yielding good returns was being mined in 1934.
Production from Tamarack Creek probably is combined with production figures for Spruce Creek (OP026).
Geologic map unit (-156.522963903913, 63.0939699073502)
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 Mertie (1936) reports that a paystreak yielding good returns was being mined in 1934.
Indication of production Yes; small
Production notes Production from Tamarack Creek probably is combined with production for Spruce Creek (OP026).