Ningyoyak Creek, EXP Prospect

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite; malachite
Gangue minerals calcite; quartz

Geographic location

Quadrangle map, 1:250,000-scale AR
Quadrangle map, 1:63,360-scale D-1
Latitude 67.88
Longitude -156.31
Nearby scientific data Find additional scientific data near this location
Location and accuracy Located on ridge just north of Ningyoyak Creek in T. 29 N., R. 11 E., Kateel River Meridian. Location accurate to within 2000 ft. (600 m). Shown as locality 64 in Mayfield and Grybeck (1978).

Geologic setting

Geologic description

Malachite and chalcopyrite in quartz-carbonate stringers (veins). Deposit crops out within an area 100 ft. by 75 ft. (30 m by 15 m), and is known depth to a depth of 10 ft (3 m) (Degenhart and others, 1978, p. 373-377).
Geologic map unit (-156.31283986024, 67.879487449311)
Mineral deposit model Polymetallic vein (Schmidt and Werdon, 1993).

Production and reserves

Workings or exploration Surface workings including trenching. Two rock samples reported by Degenhart and others (1978, p. 381-382), to assay 0.14 percent and 0.44 percent Cu respectively.
Indication of production None


MRDS Number A011903
Reporters K.R. Leonard (USGS), R.L. Elliott (USGS), J.M. Schmidt (USGS), S.W. Nelson (USGS retired)
Last report date 4/28/1997