The Alaska Endicott Mine is a gold and silver mine located in Alaska.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Alaska Endicott Mine MRDS details
Site Name
Primary: Alaska Endicott Mine
Secondary: William Henry Bay Mine
Commodity
Primary: Gold
Primary: Silver
Secondary: Copper
Location
State: Alaska
District: Juneau/William Henry Bay
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: L
Description: Many Small Displacement Faults
Alterations
Not available
Rocks
Name: Limestone
Role: Associated
Age Type: Host Rock
Age Young: Late Permian
Analytical Data
Analytical Data: CALCITE VEINS WITH 10-20% QUARTZ, 1-3% PYRITE AND 1-2% CHALCOPYRITE CONTAINED 0.5-1.0% CU, 0.5% ZN AND 10-15 PPM AG
Materials
Ore: Chalcopyrite
Gangue: Quartz
Gangue: Calcite
Gangue: Pyrite
Gangue: Chalcedony
Comments
Comment (Deposit): FAULTED QUARTZ-CALCITE BRECCIA VEIN; 10 FT AVE THICKNESS; CARRYINGCHALCOPYRITE, PYRITE AND LOW AU-AG VALVES; MANY ANGULAR FRAGMENTS OF PARTLY REPLACED GREENSTONE IN VEIN
Comment (Workings): DEVELOPED BY 2400 FT OF ADITS, DRIFTS AND RAISES AND 3 SMALL STOPES; VEIN LOST 1350 FT FROM PORTAL, FAULTED OFF SECTION NEVER FOUND; WORKINGS OPEN (1985)
Comment (Geology): COUNTRY ROCK IN GENERAL AREA: FOLDED LIMESTONE WITH INTERBEDDED ARGILLITE, CHERT, GREENSTONE FLOWS, GREENSTONE TUFFS AND GRAYWACKE; CUT BY DIABASE DIKES
Comment (Deposit): SEE ALSO: LUCKY SIX CLAIMS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Comment (Location): ADGGS GR 44, P. 14, FIG. 4 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Commodity): ORE PRODUCED WAS ABOUT 8% SULFIDES; REMAINING ORE CONTAINS 2% CU ORLESS
Comment (Development): ACTIVE 1915-1923; VERY MINOR PRODUCTION PRIOR TO 1919; MILL INSTALLED 1922; SHIPMENT OF CU ORE IN 1923
References
Reference (Deposit): USGS BULL 714, P. 19, 109-112
Reference (Deposit): USGS BULL 963-A, P. 28-30
Reference (Deposit): USGS BULL 1246, P. 162
Reference (Deposit): ADGGS GR44, P. 15
Reference (Deposit): USGS OFR 85-717, P. 43
Reference (Other Database): BAG-OFR-85-717-030
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