Quadrangle map, 1:250,000-scale | TK |
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Quadrangle map, 1:63,360-scale | A-5 |
Latitude | 62.1224 |
Longitude | -149.0883 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | This occurrence is at an elevation of about 2,950 feet on the west valley wall of upper Sheep River. The occurrence is in the southeast corner of sec. 33, T. 24 N., R. 2 E., Seward Meridian. The location is accurate to within 1/2 mile. This is locality 98 of Csejtey and Miller (1978) and Singer and others (1978). |
Geologic descriptionThis occurrence consists of malachite-stained float of Cretaceous or Paleocene tonalite (Cobb and Csejtey, 1980). A float sample contains 10 parts per million silver, 0.35 part per million gold, and 5,000 parts per million copper (Miller and others, 1978). | |
Geologic map unit | (-149.090508383242, 62.1218920501058) |
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Mineral deposit model | Porphyry copper-gold (Cox and Singer, 1986; model 20c) |
Mineral deposit model number | 20c |
Age of mineralization | Cretaceous or younger; quartz veins(?) cut plutonic rocks of this age. |
Alteration of deposit | Oxidation of copper minerals. |
Workings or exploration | Only limited surface sampling by U.S. Geological Survey (Miller and others, 1978). |
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Indication of production | None |
MRDS Number | A012186 |
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References | |
Reporters | D. Bickerstaff (U.S. Geological Survey) |
Last report date | 10/1/2002 |