Deposit ID | 10002484 |
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MRDS ID | A013421 |
Record type | Site |
Current site name | Bear Creek Placer Gold Mine |
Related records | 10283004 |
Geographic coordinates: | -159.78311, 61.05322 (WGS84) |
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Elevation | 236 |
Relative position | 7.4 MI. NE OF NYAC, ON BEAR CREEK |
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Country | State |
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United States | Alaska |
Commodity | Importance |
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Gold | Primary |
Mercury | Tertiary |
Host or associated | Host | ||
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Rock type | Unconsolidated Deposit > Silt | ||
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Host or associated | Host |
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Rock type | Unconsolidated Deposit > Gravel |
Host or associated | Host |
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Rock type | Unconsolidated Deposit > Sand and Gravel |
(1) | -159.78311, 61.05322 |
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Development status | Past Producer |
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Commodity type | Metallic |
Deposit size | Small |
Significant | No |
Discovery year | 1907 |
Discoverer | William Fisher |
Year of first production | 1909 |
Year of last production | 1964 |
District name | Aniak |
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Agency | Database name | Acronym | Record ID | Notes |
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USGS | Mineral Resources Data System | MRDS | A013421 |
USGS MF-444, LOC. 16 (1972)
USGS B 622, P. 300, 303-304, 309-321, 324-325, 327-330 (1915)
USGS OF 77-156, P. 56-57 (1977)
USGS I-292 (1959)
ADGGS SR 39, P. 49, NO. 84 (1986)
BAG-MF-444-20
Subject category | Comment text |
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Deposit | THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE. |
Deposit | PLACER DEPOSIT CONSISTS OF GRAVEL AND SILT IN FORM OF GENTLY SLOPING, ALMOST CONTINUOUS BENCHES EXTENDING ALONG ENTIRE LENGTH OF STREAM (ABOUT 15 MI.) AND THROUGHT LOWER AREA OF CENTRAL BASIN. DEPOSITS ARE ENTRENCHED BY BEAR CREEK AND TRIBUTARIES FROM 10-100 FT. FLOODPLAIN GRAVELS IN STREAMBED OF BEAR CREEK ARE 3-8 FT. DEEP AND 0.25-0.5 MI. WIDE. FLOODPLAIN DEPOSITS CONSIST OF COARSE GRAVELS, COBBLES, AND BOULDERS, SECONDARILY CONCENTRATED FROM BENCH DEPOSITS, IN PRESENT STREAMBED. AWAY FROM PRESENT STREAMBED, FLOODPLAIN DEPOSITS CONSIST OF FINER GRAVEL, SAND, AND SILT NOT RECONCENTRATED BY PRESENT STREAM. MOST PLACER GOLD OCCURS IN FLOODPLAIN GRAVELS NOT WASHED RECENTLY BY PRESENT STREAM AND IN CREVICES OF SHATTERED AND DECOMPOSED BEDROCK ON WHICH GRAVELS REST. MOST GOLD WAS MINED IN PORTION OF BEAR CREEK ABOVE MOUTH OF EAST FORK. BELOW EAST FORK, BENCH GRAVELS HAVE POOR GOLD CONTENT, EXCEPT FOR TRIBUTARY OF TINY GULCH. |
Deposit | STREAM GRADIENT ABOUT 50 FT/MI. ; INFO.SRC : 1 PUB LIT |
Deposit | Discovery Year: 1907-08 |
Type | Date | Name | Affiliation | Comment |
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Reporter | 01-JUL-1987 | Niles, L.P. (Huber, D.F.) | U.S. Geological Survey |