Unnamed Occurrence (ARDF - CB007), Alaska Peninsula District, Aleutians East Borough, Alaska, USA
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Location: Approximate location is between King Cove spit and Slavna Point, 2 mi (3.2 km) east of King Cove. Anomaly no. 70 of Christie (1974).
Geology: Christie (1974) described a color anomaly associated with a weak gossan developed at the contact of a quartz diorite pluton with volcanic rocks of the Belkofski Formation. Volcanic rocks include andesitic crystal tuffs and flows. The area of gossan is a maximum of 5,000 by 3,000 ft (1,500 by 900 m) and shows disseminated pyrite mineralization, generally in trace amounts, but locally as high as 2 percent. Approximately half of the pyrite is fracture controlled in local zones of higher pyrite content.
Workings: Brief reconnaissance geologic mapping and a few soil and silt samples. Gold, silver, and zinc were slightly anomalous, at 0.02, 1.4, and 104 ppm, respectively. Copper and molybdenum were at background levels.
Age: Pliocene or younger
Alteration: Propylitic and argillic alteration reported along with weak leaching.
Commodities (Major) - Ag, Au; (Minor) - Zn
Development Status: No
Deposit Model: Epithermal gold vein
Mineral List
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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Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps.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.) MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.