Mt. Aspid

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au; Cu; Mo
Ore minerals chalcopyrite; pyrite

Geographic location

Quadrangle map, 1:250,000-scale UN
Quadrangle map, 1:63,360-scale A-5
Latitude 53.4167
Longitude -167.4
Nearby scientific data Find additional scientific data near this location
Location and accuracy East of Chernofski in cirque on Mt. Aspid. Anomaly no. 47 of Christie (1974).

Geologic setting

Geologic description

A 3,000 ft by 3,000 ft (900 m by 900 m) color anomaly is developed in hornfelsed volcanic rocks intruded by a quartz-eye porphyry and hornblende quartz diorite. Mineralization is apparently related to the quartz-eye porphyry (+/- plagioclase phenocrysts) and consists of pyrite and trace amounts of chalcopyrite. Fracture-controlled sulfides are generally weakly developed and related to local silicification and/or fracture-controlled sericite. Minor quartz veining occurs. Christie (1974) reported a covered area about 600 ft by 1,000 ft (180 m by 305 m) exists persumably within the color anomaly area, suggesting a target might lie underneath. However, he also stated that fringing outcrops around this covered area were not well mineralized. Fracturing is generally weak.
Geologic map unit (-167.401885914317, 53.4158191975849)
Mineral deposit model Copper porphyry, epithermal gold vein
Mineral deposit model number 17, 25
Age of mineralization Miocene or younger
Alteration of deposit Local quartz sericitic, potassic, and argillic. Leaching is weak.

Production and reserves

Workings or exploration Brief reconnaissance mapping and 6 soil or silt samples. Zinc and silver were low, however samples yielded gold to as high as 0.04 ppm (detection limit 0.01 ppm) and copper as high as 330 ppm.
Indication of production None

References

MRDS Number A106025

References

Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)
Reporters Damon Bickerstaff, F.H. Wilson
Last report date 5/6/1994