Deposit ID | 10000473 |
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MRDS ID | A010652 |
Record type | Site |
Current site name | Nixon Fork - Crystal |
Alternate or previous names | Garnet Extension |
Geographic coordinates: | -154.77684, 63.23837 (WGS84) |
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Relative position | The Nixon Fork - Crystal and Garnet Extension mines are about 2,000 feet west of the Nixon Fork Mine (MD062), in Section 13, T. 26 S., R. 21 E., of the Kateel River Meridian. The reporter visited the site in 1995 and 1996. |
(click for info) |
Country | State |
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United States | Alaska |
Commodity | Importance |
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Silver | Primary |
Gold | Primary |
Bismuth | Secondary |
Copper | Secondary |
Tungsten | Secondary |
Materials | Type of material |
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Arsenopyrite | Ore |
Bismuth | Ore |
Chalcopyrite | Ore |
Scheelite | Ore |
Gold | Ore |
Pyrite | Ore |
Epidote | Gangue |
Magnetite | Gangue |
Model code | 59 |
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USGS model code | 18b |
Deposit model name | Skarn Cu |
Mark3 model number | 8 |
Host or associated | Associated | ||||
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Rock type | Plutonic Rock > Granitoid > Quartz Monzonite | ||||
|
Host or associated | Associated |
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Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite |
Host or associated | Host |
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Rock type | Sedimentary Rock > Carbonate > Limestone |
(1) | -154.77684, 63.23837 |
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Development status | Past Producer |
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Commodity type | Metallic |
District name | McGrath |
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Agency | Database name | Acronym | Record ID | Notes |
---|---|---|---|---|
USGS | Mineral Resources Data System | MRDS | A010652 | |
USGS | Alaska Resource Data File | ARDF | MD061 |
Martin, G.C., 1922, Gold lodes in the Upper Kuskokwim region: U.S. Geological Survey Bulletin 864D, p. 149-161.
Mertie, J.B., Jr., 1936, Mineral deposits of the Ruby-Kuskokwim region, Alaska: U.S. Geological Survey Bulletin 864-C, 115-245.
Freeman, Larry, 1996, A progress report on the Nixon Fork underground gold mine, McGrath-McKinley district, Alaska [abs]: Abstract preprint of the 15th Biennial Conference on Alaskan Mining, Alaska Miners Association, Fairbanks, Alaska, p. 36.
Herreid, G.H., 1966, Geology and geochemistry of the Nixon Fork area, Medfra quadrangle, Alaska: Alaska Division of Mines and Minerals Geologic Report 22, 34 p., 1 sheet, scale 1:40,000.
Subject category | Comment text |
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Deposit | Model Name = Copper-gold skarn (Cox and Singer, 1986; model no. 18b) |
Deposit | Other Comments = See Nixon Fork Mine (MD062). |
Type | Date | Name | Affiliation | Comment |
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Reporter | 07-JUN-98 | Bundtzen, T.K. | Pacific Rim Geological Consulting |