Deposit ID | 10107522 |
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MRDS ID | A012016 |
Record type | Site |
Current site name | Jualin Mine |
Related records | 10282821 |
Geographic coordinates: | -135.04706, 58.84114 (WGS84) |
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Country | State |
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United States | Alaska |
Commodity | Importance |
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Gold | Primary |
Silver | Secondary |
Copper | Tertiary |
Lead | Tertiary |
Zinc | Tertiary |
Materials | Type of material |
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Chalcopyrite | Ore |
Galena | Ore |
Sphalerite | Ore |
Ankerite | Gangue |
Calcite | Gangue |
Malachite | Gangue |
Pyrite | Gangue |
Quartz | Gangue |
Result | 14-53 PPM AU IN VEINS |
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Result | AVERAGED 20 PPM AU, USGS OFR 85-717, NO. J102 |
Host or associated | Associated | ||||
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Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||||
Rock unit name | Jualin Diorite; Massive Altered Diorite, Mainly Plagioclase, Hornblende And Biotite With Minor Epidote, Chlorite, Calcite, Sericite And Magnetite;Coast Range Batholith; Quartz Diorite Gneiss | ||||
Rock description | Jualin Diorite; Massive Altered Diorite, Mainly Plagioclase, Hornblende And Biotite With Minor Epidote, Chlorite, Calcite, Sericite And Magnetite;Coast Range Batholith; Quartz Diorite Gneiss | ||||
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Host or associated | Host |
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Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite |
Rock unit name | Berners Formation; Interstratified Slate And Graywacke With Volcanic Unit Of Augite Melaphyres And Pyroclastics |
Rock description | Berners Formation; Interstratified Slate And Graywacke With Volcanic Unit Of Augite Melaphyres And Pyroclastics |
(1) | -135.04706, 58.84114 |
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Type of structure | Regional |
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Structure description | Regional Attitude Of Planar Features; Including Bedding, Foliation In Gneiss, Major Contacts, Etc.; Is N 40 W, 60 To 90 Ne |
Strike | N 40 W |
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Dip | 70 NE |
Thickness | 3.05M |
Development status | Producer |
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Commodity type | Metallic |
Deposit size | Small |
Significant | No |
Discovery year | 1895 |
Discoverer | Frank Cook |
Year of first production | 1896 |
Year of last production | 1917 |
District name | Juneau/Berner'S Bay |
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Ownership category | National Forest |
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Type | In-situ | ||||||||||||||
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Estimate year | 1977 | ||||||||||||||
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Type of workings | Surface/Underground |
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Length | 5486.4M |
Overall depth | 121.92M |
Agency | Database name | Acronym | Record ID | Notes |
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USGS | Mineral Resources Data System | MRDS | A012016 |
USGS BULL 284, P. 33-34
USGS BULL 446, P. 44-47
USGS BULL 662, P. 81-82
USGS BULL 714, P. 107-108
METZ, PAUL A. AND WIEBMER, JOHN D., 1977, MINERAL INDUSTRY RESEARCH LABORATORY SUMMARY FILE REPORT, EUREKA, KENSINGTON, COMET, JOHNSON AND JUALIN MINES, BERNER'S BAY, JUNEAU DISTRICT, ALASKA: UNPUBLISHED REPORT SUBMITTED TO U.S.B.M. ALASKA FIELD OPERATIONS CENTER, JUNEAU, AK
USGS BULL 755, P. 24-25
USGS BULL 1246, P. 159-160
USGS OFR 84-572, P. 159, NO. 24
ADGGS SR 38, P. 13
USGS OFR 85-717, NO. J102
BAG-OFR-85-717-102
METZ AND WIEBMER, 1977 UNPUB. REPORT; USGS BULL 755, P. 25; USGS OFR 84-572, P. 159, NO. 24
Subject category | Comment text |
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Deposit | 100-300 FT WIDE SHEAR ZONE CONTAINS 4 TO 5 QUARTZ FISSURE VEINS 2 TO 10 FT WIDE, AVE. 5 FT; 400-600 FT HORIZONTAL EXTENT AND 600 FT IN VERTICAL EXTENT; VEINS CARRY PYRITE, CHALCOPYRITE, GALENA, A LITTLE SPHALERITE, MALACHITE AND AZURITE AS WELL AS FREE GOLD |
Deposit | SEE ALSO: KENSINGTON, COMET, EUREKA, JOHNSON; IN 1928, A AU-BEARING QUARTZ VEIN 9 FT WIDE WAS FOUND IN MINERALIZED AREA 49 FT WIDE BY TRENCHING 650 FT SW OF OLD MINE; DRILLING IN 1983 AND 1984 LOCATED THIN INTERCEPTS OF MODERATE GRADE AU MINERALIZATION IN QUARTZ VEINS; SEE ADGGS SR 38, P. 13 ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
Type | Date | Name | Affiliation | Comment |
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Reporter | 01-NOV-1985 | Leonard, Kenneth R. (Elliott, R. L.) | U.S. Geological Survey |