Unnamed (east-northeast of Cape Kigunak)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Other commodities Ag; Cu; Mo; Zn
Ore minerals chalcopyrite; gold; pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale UK
Quadrangle map, 1:63,360-scale B-2
Latitude 53.3
Longitude -168.4
Nearby scientific data Find additional scientific data near this location
Location and accuracy This site is located approximately 3 miles east-northeast of Cape Kigunak at an elevation of less than 200 feet. It corresponds to Christie's (1974) color anomaly 35. Site location is accurate to within 2 miles.

Geologic setting

Geologic description

This occurrence, measuring approximately 5,000 x 3,000 feet in area, consists of quartz stockwork veins in altered diorite (Christie, 1974). The stockwork is moderately to well-developed throughout and contains composite veins up to 6 feet in thickness. The quartz veins contain minor chalcopyrite and pyrite. Disseminated pyrite is common, especially adjacent to quartz veins. The diorite exhibits propylitic alteration increasing to pervasive sericitization and silicification adjacent to the quartz veins.
The Aleut-Quintana-Duval JV collected 10 rock samples in 1974. The best metal values obtained were 66 ppm copper, 0.2 ppm gold, 38 ppm molybdenum, 1.8 ppm silver, and 116 ppm zinc (Christie, 1974).
Geologic map unit (-168.401991047367, 53.2990834797937)
Mineral deposit model Creede epithermal veins? (Cox and Singer, 1986; model 25b)
Mineral deposit model number 25b?
Age of mineralization Tertiary or later.
Alteration of deposit The rocks at this site exhibit propylitic alteration increasing to pervasive sericitization and silicification adjacent to the quartz veins.

Production and reserves

Workings or exploration The Aleut-Quintana-Duval JV sampled this site in 1974 (Christie, 1974). Best values from 10 rock samples were 66 ppm copper, 0.2 ppm gold, 28 ppm molybdenum, 1.8 ppm silver, and 116 ppm zinc.
Indication of production None

Additional comments

This site is on land selected by the Aleut Native Corporation.

References

MRDS Number 10308475

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Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps.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 S.H. Pilcher (Anchorage)
Last report date 1/27/2000