Unnamed (head of Moose Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag
Other commodities Hg; Pb
Ore minerals iron oxide
Gangue minerals chalcedony

Geographic location

Quadrangle map, 1:250,000-scale ID
Quadrangle map, 1:63,360-scale C-3
Latitude 62.71615
Longitude -157.08611
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 1,550 feet on a spur overlooking the head of Moose Creek . It is about 0.7 mile southeast of hill 2110 and about 0.5 mile east-southeast of the center of section 2, T. 30 N., R. 42 W., of the Seward Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence is in an extensive zone of strong silicification and red, iron-oxide gossan in altered tuff near the base of the Beaver Mountains volcanic field which is part of the the Iditarod Volcanics (Bundtzen, Laird, and Lockwood, 1988; Miller and Bundtzen, 1988). The silica alteration is notable for its light blue chalcedony. The strong red gossan probably developed by oxidation of unknown sulfide minerals. Samples from the altered tuff contained up to 5.1 parts per million (ppm) silver, 76 ppm lead, and 5,000 parts per billion (ppb) mercury (Bundtzen, Laird, and Lockwood, 1988). Similar mineralization can be found over an area about 2 miles by 2 miles in size at the head of Moose Creek.
Geologic map unit (-157.088466400651, 62.7154799884911)
Mineral deposit model Polymetallic vein? (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c?
Alteration of deposit Silicification with development of much chalcedony.

Production and reserves

Workings or exploration The area was sampled by the Alaska Division of Geological and Geophysical Surveys in 1982. (Bundtzen, Laird, and Lockwood, 1988).
Indication of production None

References