Unnamed Occurrence (ARDF - FP010), Alaska Peninsula District, Aleutians East Borough, Alaska, USA
This page is currently not sponsored. Click here to sponsor this page.
Location: Approximate location is about 5 km south of False Pass community. Anomaly no. 49 of Christie (1974) and no. 2 of MacKevett and Holloway (1977, p. 11). Location description is poor; however, location apparently is southwest of Whirl Point on Unimak Island.
Geology: Christie (1974) briefly examined a poorly defined color anomaly 2 mi (3.2 km) in diameter developed in andesitic volcanic flows, breccia, and tuff intruded by multiple diorite stocks(?). The diorite contact metamorphoses the volcanic rocks and pyrite is disseminated in both the diorite and the volcanic rocks. The diorite is pervasively propylitically altered.
Workings: Brief reconnaissance geologic mapping and a few silt samples were collected. One sample had 0.01 ppm gold. Occurrence apparently has not been adequately examined for epithermal gold vein potential.
Age: Miocene or younger
Alteration: Pervasive propylitic alteration of diorite within the color anomaly and local(?) silicification. Hydrothermal minerals reported include clay, chlorite, and epidote.
Commodities (Major) - Ag, Au?
Development Status: No
Deposit Model: Epithermal gold vein
Mineral List
1 entry listed. 1 valid mineral.
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
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Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps.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.
