Main commodities | Ag; Cu; Pb; Sb |
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Other commodities | Cd |
Ore minerals | arsenopyrite; chalcopyrite; galena; malachite |
Gangue minerals | quartz |
Quadrangle map, 1:250,000-scale | RM |
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Quadrangle map, 1:63,360-scale | C-1 |
Latitude | 61.699 |
Longitude | -159.196 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | This occurrence is in the northern Russian Mountains, on a ridge crest 1,500 feet northeast of peak 2940. The map site is in the NE1/4 sec. 35, T. 19 N., R. 55 W., of the Seward Meridian. This is sample locality 3 of Bundtzen and Laird (1991). |
Geologic descriptionBundtzen and Laird (1991) report two, small, malachite-stained quartz veins containing chalcopyrite, galena, and arsenopyrite. The veins are 1 to 3 centimeters wide and occur along northwest-trending joints in the cupola zone of a syeno-monzonite just below the contact with thermally metamorphosed andesite country rocks. A sample of the veins contained 0.46 percent arsenic, 0.13 percent antimony, 0.94 percent lead, 0.09 percent cadmium, and 45 ppm silver; gold was not detected. The veins are in the Upper Cretaceous intrusive complex of the Russian Mountains (Bundtzen and Laird, 1991). | |
Geologic map unit | (-159.198366339856, 61.6982860273258) |
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Mineral deposit model | Polymetallic veins (Cox and Singer, 1986; model 22c) |
Mineral deposit model number | 22c |
Age of mineralization | Late Cretaceous or Tertiary. Veins crosscut part of the intrusive complex of the Russian Mountains. Quartz monzonite from this complex has yielded a K/Ar age of 70.3 +/- 2.1 Ma (Bundtzen and Laird, 1991). |
Alteration of deposit | Quartz veining. |
Workings or exploration | Surface observation and sampling has been completed (Bundtzen and Laird, 1991). |
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Indication of production | None |
MRDS Number | 10308197 |
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References | |
Reporters | Travis L. Hudson and Madelyn A. Millholland |
Last report date | 6/10/2001 |