Deposit ID | 10000828 |
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MRDS ID | A011481 |
Record type | Site |
Current site name | Midas Mine |
Alternate or previous names | Granby Consolidated Mining, Smelting and Power Co., Orebodies: Jumbo Lode, All-American |
Related records | 10136827 |
Geographic coordinates: | -146.27671, 61.01238 (WGS84) |
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Relative position | 7.5 MI S OF OLD VALDEZ |
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Country | State |
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United States | Alaska |
Meridian | Township | Range | Section | Fraction | State |
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010S | 006W | 10 | SW | Alaska |
Commodity | Importance |
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Copper | Primary |
Silver | Secondary |
Gold | Secondary |
Zinc | Tertiary |
Lead | Tertiary |
Materials | Type of material |
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Chalcopyrite | Ore |
Galena | Ore |
Pyrrhotite | Ore |
Sphalerite | Ore |
Calcite | Gangue |
Quartz | Gangue |
Pyrite | Unknown |
Result | 3.4% CU, 4.2% ZN, LESS THAN 0.1% PB, 0.15 OZ/TON AU, 1.46 OZ/TON AG, CHIP SAMPLE ACROSS 3 FT MASSIVE SULFIDE VEIN, JUMBO LODE |
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Result | 0.8% CU, 0.9% ZN, 0.05% PB, 0.03 OZ/TON AU, 0.03 OZ/TON AG, CHIP SAMPLE ACROSS 3 FT ZONE OF MINERALIZATION, ALL-AMERICAN LODE |
Result | DATA FROM ADGGS GR 15, TABLE I, P. 10 |
Host or associated | Associated | ||||
---|---|---|---|---|---|
Rock type | Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone | ||||
Rock unit name | Valdez Group | ||||
Rock description | Valdez Group | ||||
|
Host or associated | Host |
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Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Siltstone |
Rock unit name | Valdez Group |
Rock description | Valdez Group;Valdez Group;Valdez Group;Valdez Group;Valdez Group |
(1) | -146.27671, 61.01238 |
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Type | Description | Terms |
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Regional | Shear Zones Developed In Slate Country Rock That Has Been Folded Against Graywacke | |
Local | N-S Fault Runs About 1000 Ft W Of Mine, May Cut Off Ore Body; Minordrag Folds Suggest Anticline To The S |
Strike | N 75 W TO S 62 W |
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Dip | 40 TO 70 N |
Thickness | 7M |
Length | 300M |
Development status | Past Producer |
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Commodity type | Metallic |
Deposit size | Small |
Significant | No |
Discovery year | 1901 |
Year of first production | 1912 |
Year of last production | 1919 |
District name | Port Valdez |
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Year | 1917 | ||||||||||||||||||||||||||||
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Accuracy | Accurate | ||||||||||||||||||||||||||||
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Year | 1918 | ||||||||||||||||||||||||||||
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Accuracy | Accurate | ||||||||||||||||||||||||||||
|
Agency | Database name | Acronym | Record ID | Notes |
---|---|---|---|---|
USGS | Mineral Resources Data System | MRDS | A011481 |
USGS BULL 622, P. 151-153, 156-157, 187-188
USBM BULL 142, P. 38, 40
USBM BULL 153, P. 46-47
USGS BULL 692, P. 164-166, 168-171
ADGGS GR 15, P. 1, 5-12, 19
USBM IC 8626, P. 21
USGS OFR 80-892B, LOC. 32
ADGGS SR 31, LOC. 146
BAG-OFR-80-892B-32
USBM BULL 153, P. 47 AND ADGGS GR 15, P. 7
Subject category | Comment text |
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Deposit | CRUDELY STRATIFORM MASSIVE VEIN AND DISSEMINATED PYRITE-PYRRHOTITE-CHALCOPYRITE-SPHALERITE REPLACEMENT DEPOSITS; LOCALLY REMOBILIZED AND ENRICHED ALONG FRACTURES TO FORM CROSSCUTTING POLYMETALLIC SULFIDE-BEARING QUARTZ-CALCITE VEINS AND FRACTURE FILLINGS; GENERALLY RESTRICTED TOSHEAR ZONES STRIKING N 75 W TO S 62 W AND DIPPING 40-70 N; JUMBO LODE RANGED FROM A FEW IN TO 20 FT WIDE, AVERAGING 3 TO 4 FT OF ORE IN SHEAR ZONE ABOUT 1000 FT LONG; ALL-AMERICAN LODE IS WIDER BUT LOWER GRADE |
Deposit | ONLY COPPER MINE IN VALDEZ QUAD. WITH ANY SIGNIFICANT PRODUCTION; SOME RESERVES REMAIN IN JUMBO LODE, AND VERY LITTLE WORK HAS BEEN DONE ON ALL-AMERICAN LODE TO DATE; ACTIVE CLAIMS AND EXPLORATION REPORTED IN 1982; TWO SMALL OCCURRENCES OF CHALMERSITE REPORTED IN SOLOMON GULCH, BUT NOT AT MIDAS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
Type | Date | Name | Affiliation | Comment |
---|---|---|---|---|
Reporter | 01-JUN-1985 | Leonard, Kenneth R. (Elliott, R. L.) | U.S. Geological Survey | |
Editor | 14-APR-1994 | Mosier, Dan | U.S. Geological Survey |