Unnamed Occurrence (ARDF - EA140; head of Steele Creek), Fortymile District, Southeast Fairbanks Borough, Alaska, USA
This page is currently not sponsored. Click here to sponsor this page.
Geology: The rocks in the vicinity of this occurrence are Paleozoic amphibolite-facies metamorphic rocks that have been intruded by granitic plutons and dikes of probable Jurassic age (Foster, 1976; Szumigala and others, 2002). A porphyritic biotite-granodiorite dike contains 36 ppb gold (Crock and others, 2000).
Workings: A porphyritic biotite-granodiorite dike contains 36 ppb gold (Crock and others, 2000).
Age: Possibly Jurassic?
Commodities (Major) - Au
Development Status: None
Deposit Model: Plutonic-related gold.
Mineral List
No entries listed.
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
Crock, J.G., Gough, L.P., Wanty, R.B., Day, W.C., Wang, B., Gamble, B.M., Henning, M., Brown, Z.A., and Meier, A.L., 2000, Regional geochemical results from the analyses of rock, water, soil, stream sediments, and vegetation samples--Fortymile River watershed, east-central Alaska, 1998 sampling: U.S. Geological Survey Open-File Report 00-0511, 14 p. Foster, H.L., 1976, Geologic map of the Eagle quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series, Map 922, 1 sheet, scale 1:250,000. Szumigala, D.J., Newberry, R.J., Werdon, M.B., Athey, J.E., Flynn, R.L., and Clautice, K.C., 2002, Bedrock geologic map of the Eagle A-1 quadrangle, Fortymile mining district, Alaska: Alaska Division of Geological and Geophysical Surveys Preliminary Interpretive Report 2002-1b, 1 sheet, scale 1:63,360.
