Unnamed (near Allen River)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu; Zn
Other commodities Ni; Sn; Ti
Ore minerals cassiterite; chalcopyrite; rutile; sphalerite; unspecified copper sulfides

Geographic location

Quadrangle map, 1:250,000-scale WI
Quadrangle map, 1:63,360-scale B-4
Latitude 67.3828
Longitude -151.9893
Nearby scientific data Find additional scientific data near this location
Location and accuracy The occurrence is on Allen River, 0.4 mile downstream from the mouth of McCamant Creek. The occurrence is sample 237 in Dillon and others (1981 [AOF 133B]). The location is accurate within one-half mile.

Geologic setting

Geologic description

Brosge and Reiser (1960) noted copper sulfides and malachite in Upper Devonian black phyllite and slate on the Allen River near the mouth of McCamant Creek. Dillon and others (1981, sample 237 [AOF 133B]) collected a sample of mineralized, metaclastic quartzite on Allen River less than 0.5 mile downstream from McCamant Creek. The sample contained disseminated(?) chalcopyrite and sphalerite, secondary malachite and azurite, and possibly rutile and cassiterite. A sample contains 5,000 ppm copper, 320 ppm zinc, and 200 ppm nickel. The rocks in the area are Middle or Upper Devonian(?) phyllite and dolomite, with lesser metasandstone, marble, and conglomerate (Dillon and others, 1986).
Geologic map unit (-151.992045168141, 67.3823393982191)
Mineral deposit model Polymetallic vein? (Cox and Singer, 1986; model 22c?).
Mineral deposit model number 22c?
Alteration of deposit Oxidation of copper minerals.

Production and reserves

Workings or exploration Only surface sampling.
Indication of production None

References