Phoenix

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu
Other commodities Fe
Ore minerals azurite; bornite; chalcopyrite; hematite; malachite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale B-5
Latitude 62.3296
Longitude -149.066
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Phoenix prospect is on Hyphen Gulch, a small tributary of Iron Creek, at about an elevation of about 3,600 feet. The prospect is near the center of sec. 22, T. 26 N., R. 2 E., Seward Meridian The location is accurate to within 1/4 mile. This is locality 72 of Csejtey and Miller (1978).

Geologic setting

Geologic description

The Phoenix prospect is in copper-stained basalt which is locally replaced by chalcopyrite, specular hematite, minor bornite, and quartz. Hematite and minor amounts of the sulfides also occurs in several narrow veins (Capps, 1919 [B 692]; Schmidt and others, 2002). A small shear zone, 2 to 3 inches wide, trends northeasterly, dips to the northwest, and contains minor quartz and copper staining (Capps, 1919 [B 692]). A 0.6-foot chip sample collected by the U.S. Bureau of Mines contains 900 parts per million copper (Fechner, 1986). Mineralization is exposed in a surface cut.
Geologic map unit (-149.068220764473, 62.3291042413727)
Mineral deposit model Basaltic Cu (Cox and Singer, 1986; model 23)
Mineral deposit model number 23
Alteration of deposit Oxidation of copper sulfides to azurite and malachite.

Production and reserves

Workings or exploration Mineralization is exposed in a surface cut (Capps, 1919, p. 202). A 0.6-foot chip sample collected by the U.S. Bureau of Mines contains 900 parts per million copper (Fechner, 1986).
Indication of production None

Additional comments

MAS/MILS number 20760009.

References

MRDS Number A012202

References

Reporters R.K. Rogers (U. S. Geological Survey contractor)
Last report date 10/1/2002