Main commodities | Cu |
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Ore minerals | chrysocolla |
Gangue minerals | epidote; prehnite; quartz |
Quadrangle map, 1:250,000-scale | MH |
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Quadrangle map, 1:63,360-scale | A-4 |
Latitude | 63.054 |
Longitude | -145.5889 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | This occurrence is at an elevation of 3,600 feet on the northeast flank of Paxson Mountain, approximately one-half mile south of the Denali Highway. It is in the SE1/4NW1/4 section 35, T. 21 S., R. 11 E., Fairbanks Meridian. This occurrence corresponds to locality 6 in Rose and Saunders (1965) and to locality S92 in table 2 of Nokleberg and others (1991). |
Geologic descriptionThis occurrence consists of a 2-foot pod of chrysocolla and quartz in a highly altered vesicular basalt of the Nikolai Greenstone of Late Triassic age (Rose and Saunders, 1965). A massive non-vesicular hornblende basalt or andesite dike (?) is exposed about 3 feet above the copper-bearing pod. | |
Geologic map unit | (-145.591124397141, 63.0535796243084) |
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Mineral deposit model | Basaltic Cu (Cox and Singer, 1986; model 23). |
Mineral deposit model number | 23 |
Age of mineralization | Probably Cretaceous. |
Alteration of deposit | Alteration minerals noted in the basalt are quartz, epidote, and prehnite; copper mineral(s) are oxidized. |
Indication of production | None |
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MRDS Number | A011808 |
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References | |
Reporters | W.T. Ellis (Alaska Earth Science), C.C. Hawley (Hawley Resource Group), and W.J. Nokleberg (USGS) |
Last report date | 6/18/2002 |