Deposit ID | 10002039 |
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MRDS ID | A012888 |
Record type | Site |
Current site name | Sophie Gulch Mine |
Related records | 10160160 |
Geographic coordinates: | -165.41772, 64.6115 (WGS84) |
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Relative position | ON TRIB. TO ROCK CREEK. |
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Country | State |
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United States | Alaska |
Commodity | Importance |
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Tungsten | Primary |
Gold | Tertiary |
Lead | Tertiary |
Materials | Type of material |
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Galena | Ore |
Gold | Ore |
Scheelite | Ore |
Calcite | Gangue |
Feldspar | Gangue |
Pyrite | Gangue |
Quartz | Gangue |
Host or associated | Host |
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Rock type | Metamorphic Rock > Schist > Mica Schist |
(1) | -165.41772, 64.6115 |
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Strike | N 45 DEGREES E |
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Dip | 90 DEGREES TO STEEP NW |
Thickness | 4.57M |
Width | 15.24M |
Length | 304.8M |
Development status | Past Producer |
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Commodity type | Metallic |
Deposit size | Small |
Significant | No |
Discovery year | 1900 |
Year of first production | 1916 |
Year of last production | 1917 |
Agency | Database name | Acronym | Record ID | Notes |
---|---|---|---|---|
USGS | Mineral Resources Data System | MRDS | A012888 |
USGS BULLETIN 662, P. 433, 436, 457.
USGS BULLETIN 722, P. 182, 233-234, 245-246.
USGS OFR 17, P. 3.
USBM RI 4174, P. 30-32.
USGS MF-247, LOC. 17.
USGS BULLETIN 1246, P. 121.
USGS BULLETIN 1374, P. 83.
USGS OFR 77-796-B, P. 29, LOC. 375-B.
BAG-MF-463-98
Subject category | Comment text |
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Deposit | UNWEATHERED MATERIAL TOO LOW GRADE TO MINE, USGS, OFR 17, P. 3; LATER REPORTS OF SPHALERITE AND STIBNITE AT THIS PROSPECT APPEAR TO BE IN ERROR. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
Deposit | ZONE OF RESIDUAL MATERIAL 3-15 FT THICK WAS DEVELOPED OVER SHEAR ZONE CONTAINING NUMEROUS IRREGULAR QUARTZ, QUARTZ-FELDSPAR, AND QUARTZ-CALCITE VEINS FROM LESS THAN 1 IN TO ABOUT 1 FT THICK; SCHEELITE-BEARING ZONE 50 FT BY 1000 FT; SCHEELITE AT VEIN MARGINS AND DISSEMINATED IN WALL ROCK; SURROUNDED BY PERIPHERAL ZONE OF AU DISSEMIANTED IN WALL ROCK; SCHEELITE-BEARING VEINS CROSS CUT BY ARSENOPYRITE-PYRITE-GALENA STRINGERS; SOME ARSENOPYRITE ALSO DISSEMIANTED IN WALL ROCK. |
Type | Date | Name | Affiliation | Comment |
---|---|---|---|---|
Reporter | 01-MAY-1987 | Leonard, Kenneth R. (Huber, Donald F.) | U.S. Geological Survey |