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Unnamed Occurrence (ARDF - CI061), Circle District, Yukon-Koyukuk Borough, Alaska, USA

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Location: The location is a short distance below the junction of Deadwood Creek and Discovery Gulch, on a wolframite-bearing vein in a prospect hole (Johnson, 1910, p. 248).
Geology: This occurrence is an unconfirmed report of a wolframite-bearing vein in a prospect hole sunk when the high bench gravels were being prospected for gold. Wolframite has been found in placers below the mouth of Discovery Gulch (Johnson, 1910, p. 248). This wolframite-bearing vein is within the Lower Schist bedrock unit described by Wiltse and others (1995) as a medium to dark gray and medium greenish-gray, fine- to medium-grained, commonly slightly calcareous quartz-muscovite schist, with lesser amounts of quartzose porphyroblastic albite-chlorite schist and chlorite schist.
Workings: A prospect hole was dug around 1908 in a placer deposit that uncovered the wolframite vein, but was caved in by 1909 (Johnson, 1910).

Commodities (Major) - W
Development Status: None

Mineral List



1 entry 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

Brooks, A.H., 1910, Mineral resources of Alaska, report on progress of investigations in 1909: U.S. Geological Survey Bulletin 442, 426 p. Johnson, B.L., 1910, Occurrence of wolframite and cassiterite in the gold placers of Deadwood Creek, Birch Creek district: U.S. Geological Survey Bulletin 442-F, p. 246-250. Menzie, W.D., Foster, H.L., Tripp, R.B., and Yeend, W.E., 1983, Mineral resource assessment of the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-170-B, 61 p., 1 sheet, 1:250,000.

Mineral and/or Locality  
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