Unnamed (south of Indian Mountain)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Au; Cu
Ore minerals pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale HU
Quadrangle map, 1:63,360-scale A-2
Latitude 66.01
Longitude -153.688
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is located east of the Indian River, about 4.5 miles south of Indian Mountain. The occurrence is at an elevation of about 1,800 feet, 0.3 mile west of the center of section 18, T. 7 N., R. 25 E. of the Kateel River Meridian. The location is accurate within 1 mile.

Geologic setting

Geologic description

Kurtak and others (1999) report a small, conspicuous, color anomaly, which is the expression of hydrothermally altered andesite(?) that contains 2 to 3% pyrite. The andesite(?) and numerous quartz veinlets occur only as float. The oxidized rocks commonly exhibit boxworks and gossan textures which suggest a high, original sulfide content. Samples of quartz-rich float contain up to 593 ppb gold, 21.6 ppm silver, and 692 ppm, copper. The rocks in the area are Upper Jurassic-Lower Cretaceous, andesitic volcanic rocks (Patton and Miller, 1966).
Geologic map unit (-153.690623799453, 66.00946256895)
Mineral deposit model Porphyry Cu-Au? (Cox and Singer, 1986; model 20c?).
Mineral deposit model number 20c?
Alteration of deposit Oxidation and unspecified hydrothermal alteration.

Production and reserves

Workings or exploration Only surface sampling.
Indication of production None

References