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Unnamed Occurrence (ARDF - TL070), Yentna District, Matanuska-Susitna Borough, Alaska, USA

Latitude: 62°37'11"N
Longitude: 152°46'11"W
Location: Reed and others (1978, locality 13) locate this occurrence in the headwaters of Pingston Creek.
Geology: This site is given as an unconfirmed location of gold-bearing mariposite-rich boulders by Reed and others (1978). This area drains Paleozoic sedimentary rocks south of the Denali Fault (Reed and Nelson, 1980).
Workings: Reconnaissance mapping and rock sampling by the U.S. Geological Survey (Reed and others, 1978) are all that have been described here. This site is an unconfirmed location of gold-bearing mariposite-rich boulders by Reed and others (1978).
Age: Paleozoic (?); boulders were likely derived from the Paleozoic rocks mapped by Reed and Nelson (1980) upstream from this site.

Commodities (Major) - Au
Development Status: None

References

Reed, B.L., and Nelson, S.W., 1980, Geologic map of the Talkeetna quadrangle: U.S. Geological Survey Miscellaneous Investigations Map I-1174, 1 sheet, scale 1:250,000. Reed, B.L., Nelson, S.W., Curtin, G.C., and Singer, D.A., 1978, Mineral resources map of the Talkeetna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-870-D, 1 sheet, scale 1:250,000.

Mineral List

Phengite
var: Mariposite



1 entry listed.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Jobs in Alaska, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 10th Jun 2011 23:01:23
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