Unnamed

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals pyrite

Geographic location

Quadrangle map, 1:250,000-scale CB
Quadrangle map, 1:63,360-scale A-1
Latitude 55.1667
Longitude -162.2333
Nearby scientific data Find additional scientific data near this location
Location and accuracy Approximate location is about 2 mi (3.2 km) southeast of Mt. Dutton, near Belkofski Bay. Anomaly no. 71 of Christie (1974) and no. 11 of MacKevett and Holloway (1977, p. 9).

Geologic setting

Geologic description

Christie (1974) described a color anomaly and associated gossan developed in hornfelsed andesite and dacite east of a contact with a fresh, medium-grained, unpyritized quartz diorite pluton. Gossan forms an oval, roughly 2,000 by 1,200 ft (1,500 by 900 m), but it is not fully delineated. Within the color anomaly, there are several thin breccia zones which are highly leached. Color anomaly is due to the weathering of pyrite, which is disseminated or localized in fractures in concentrations up to 8 percent. Northwest of the gossan, very recent volcanic debris and young flows from Mt. Dutton cover a hidden gossan as evidenced by bright orange seeps and strong iron-oxide staining in creek.
Geologic map unit (-162.235335057951, 55.1658239154993)
Mineral deposit model Epithermal gold vein
Mineral deposit model number 25
Age of mineralization Pliocene or younger
Alteration of deposit Alteration is absent to weakly propylitic as evidenced by the presence of epidote and chlorite.

Production and reserves

Workings or exploration Brief reconnaissance geologic mapping and collection of a few soil and silt samples reported by Christie (1974). Gold, silver, zinc, copper, and molybdenum were at background levels.
Indication of production None

Additional comments

Sampling probably not adequate to evaluate for epithermal gold vein mineralization.

References

MRDS Number A106053

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Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps.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 G.D. DuBois, F.H. Wilson
Last report date 5/13/1994