Deposit ID | 10001318 |
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MRDS ID | A012057 |
Record type | Site |
Current site name | Alaska-Juneau Mine |
Alternate or previous names | Alaska Juneau Gold Mining Co., Mines: A.J., Perseverance, Ebner, Orebodies: North Ore Body, South Ore Body |
Geographic coordinates: | -134.34701, 58.30725 (WGS84) |
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Relative position | 2.5 MI E OF JUNEAU, AK |
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Country | State |
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United States | Alaska |
Commodity | Importance |
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Gold | Primary |
Silver | Secondary |
Lead | Secondary |
Zinc | Tertiary |
Copper | Tertiary |
Materials | Type of material |
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Chalcopyrite | Ore |
Sphalerite | Ore |
Ankerite | Gangue |
Pyrite | Gangue |
Pyrrhotite | Gangue |
Quartz | Gangue |
Result | AVE GRADE OF 88,500,000 TONS MINED WAS 0.0432 OZ/TON AU, NOEL, 1966, 1966, P. 54 |
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Result | AVERAGE 7-15 PPM AU, USGS OFR 85-717 |
Host or associated | Associated | ||||||||||||
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Rock type | Metamorphic Rock > Gneiss | ||||||||||||
Rock unit name | Mt Juneau Pluton;Perseverance Slate;Gastineau Volcanics;Gastineau Volcanics;Gastineau Volcanics | ||||||||||||
Rock description | Mt Juneau Pluton;Perseverance Slate;Gastineau Volcanics;Gastineau Volcanics;Gastineau Volcanics | ||||||||||||
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Host or associated | Host |
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Rock type | Metamorphic Rock > Amphibolite |
Rock unit name | Perseverance Slate;Perseverance Slate |
Rock description | Perseverance Slate;Perseverance Slate |
(1) | -134.34701, 58.30725 |
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Type | Description | Terms |
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Regional | Area Sw Of Coast Range Intrusive Complex Is Metamorphic Belt With Well Developed Nw Trending Isoclinal Fold System; Minor Fold Axes Plunge Steeply Ne; Two Major Fault Sets: Nw Striking Longitudinal Faults And Steeply Dipping E-W Striking Transverse Faults | |
Local | A.J. Lode System Is Bisected By E W Trending, Transverse-Normal, Silverbow Fault; Dip 70 N; Ebner Mine And North Ore Body Have Been Offset To The W And Dropped Relative To South Ore Body And Perseverance Mine |
General form | IRREGULAR, LENSE |
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Strike | N 36 W AVERAGE |
Dip | 78 NE AVERAGE |
Width | 91.44M |
Length | 5632.55M |
General form | IRREGULAR, LENSE |
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Dip | 78 NE AVERAGE |
Development status | Producer |
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Commodity type | Metallic |
Deposit size | Medium |
Significant | No |
Discovery year | 1880 |
Discoverer | Joseph Juneau; Richard T. Harris |
Year of first production | 1893 |
Year of last production | 1944 |
District name | Juneau/Gold Creek |
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Ownership category | National Forest |
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Type | Owner |
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Owner | City And Borough Of Juneau |
Home office | Juneau, AK |
First year | 1985 |
Type | Owner |
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Owner | Alaska Electric Light And Power Co. |
Home office | Juneau, AK |
First year | 1985 |
Type | Operator |
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Owner | Echo Bay Mines, Ltd. |
First year | 1985 |
Year | 1920 | |||||||||||||||||||||
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Period | 1914-1920 | |||||||||||||||||||||
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Year | 1930 | |||||||||||||||||||||
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Period | 1921-1930 | |||||||||||||||||||||
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Year | 1931 | |||||||||||||||||||||
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Year | 1932 | |||||||||||||||||||||
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Year | 1933 | |||||||||||||||||||||
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Year | 1934 | |||||||||||||||||||||
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Year | 1935 | |||||||||||||||||||||
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Agency | Database name | Acronym | Record ID | Notes |
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USGS | Mineral Resources Data System | MRDS | A012057 |
USGS OFR 60
ENGINEERING AND MINING JOURNAL, VOL.133, NO.9
ADGGS GR 1, P.19-21
NOEL, G.A., 1966, THE PRODUCTIVE MINERAL DEPOSITS OF SOUTHEAST ALASKA, IN ADGGS REPORT FOR THE YEAR 1966: JUNEAU, ALASKA, P.54, 60
MINING JOURNAL, VOL. 302, NO. 7755, P.230-231
USGS OFR 85-395
USGS CIRC 700, P.54-56
ADGGS SR 38, P.14
STONE, DAVID AND STONE, BRENDA, 1983, HARD ROCK GOLD, THE STORY OF THE GREAT MINES THAT WERE THE HEARTBEAT OF JUNEAU: SEATTLE, WASH., VANGUARD PRESS INC., P.57-78
USGS OFR 85-717, P.178
BAG-OFR-85-717-165
USGS OFR 60, TABLE 2
Subject category | Comment text |
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Deposit | NETWORK OF QUARTZ VEINS AND STRINGERS FROM 1 IN TO 2-3 FT WIDE CONFINED TO A BAND ABOUT 300 FT WIDE AND 18,500 FT LONG IN PORTION OF PERSEVERANCE SLATE ADJACENT TO CONTACT WITH UNDERLYING? GASTINEAU VOLCANICS; LODE SYSTEM DIVIDED INTO NORTH ORE BODY AND SOUTH ORE BODY BY TRANSVERSE NORMAL FAULT; 95% OF VEIN MATERIAL IS QUARTZ, 1-3% CARBONATES; 2-3% SULFIDES; VEINS CARRY: PYRRHOTITE, PYRITE, ARSENOPYRITE, GALENA, SPHALERITE, CHALCOPYRITE AND FREE GOLD; ORE BODIES PRIMARILY ASSAY BOUNDED, WITH GREATEST AU VALVES IN GROUND CONTAINING ABUNDANT QUARTZ VEINS IN AND NEAR THE ENDS OF AMPHIBOLITE SILLS INTERCALATED WITH PHYLLITE |
Deposit | SEE ALSO: PERSEVERANCE, EBNER; IN ITS DAY, THE A.J. COMPLEX WAS WORLD CLASS, LOW GRADE OPERATION; WAS "THE ONLY MINE IN THE WORLD TO HAVE SUCCESSFULLY OPERATED ON ORE OF SUCH LOW GRADE," USGS OFR 60, P.166; I N 1985, PLANS MADE TO DREDGE AND PROCESS MINE TAILINGS IN GASTINEAU CH ANNEL FROM ALASKA-JUNEAU AND ALASKA GASTINEAU OPERATIONS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 5 PERS COMM |
Type | Date | Name | Affiliation | Comment |
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Reporter | 01-NOV-1985 | Leonard, Kenneth R. (Elliott, R. L.) | U.S. Geological Survey | |
Editor | 14-APR-1994 | Mosier, Dan | U.S. Geological Survey |