Mogul (Banta and Cameron)

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu; Zn
Ore minerals chalcopyrite; pyrite; pyrrhotite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale CV
Quadrangle map, 1:63,360-scale D-7
Latitude 60.9
Longitude -146.601
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is at an elevation of about 1800 feet on the west side of Vesuvius Valley, approximately one mile west-southwest of Millard Lake. It is in W1/2 sec. 23, T. 11 S., R. 8 W., of the Copper River Meridian. The location is accurate to within 1000 ft. This prospect is shown as #8 in Cobb (1972: MF-392) and as C-85 in Jansons and others (1984).

Geologic setting

Geologic description

The country rocks at these prospects are mafic volcanic rocks and sedimentary rocks of the Tertiary Orca Group (Nelson and others, 1985). The deposit consists of irregular masses of chalcopyrite, pyrite, pyrrhotite, and sphalerite in a shear zone up to four feet wide in mafic volcanic rocks (Jansons and others, 1984).
The prospect was explored by a 13-foot shaft and several surface excavations. Six chip samples contained 620 ppm to 0.37% Cu (Jansons and others, 1984).
Geologic map unit (-146.603005832194, 60.8994559664064)
Mineral deposit model Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
Mineral deposit model number 24a
Age of mineralization Probably Tertiary based on the age of the host rocks.

Production and reserves

Workings or exploration The prospect was explored by a 13-foot shaft and several surface excavations. Six chip samples contained 620 ppm to 0.37% Cu (Jansons and others, 1984).
Indication of production None
Reserve estimates Inferred reserves of 400 tons @ 0.25% Cu (Jansons and others, 1984).

Additional comments

Nelson and others (1985) interpret the country rocks as accreted ocean crust. Crowe and others (1992; 1993) and Sainsbury (1993) discuss the genesis of the volcanogenic massive sulfide deposits in this area.
Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.

References