The Greens Creek Prospect is a zinc, silver, lead, and gold 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
Elevation:
Commodity: Zinc, Silver, Lead, Gold
Lat, Long: 58.07694, -134.61944
Map: View on Google Maps
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Greens Creek Prospect MRDS details
Site Name
Primary: Greens Creek Prospect
Secondary: Big Sore
Commodity
Primary: Zinc
Primary: Silver
Primary: Lead
Primary: Gold
Secondary: Copper
Tertiary: Bismuth
Location
State: Alaska
District: Admiralty
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
Owner Name: Noranda Mining, Inc.
Years: 1985 -
Owner Name: Anaconda Minerals Co. (39.5%) ; Noranda Exploration, Inc. (39.5%); Texas Gas Resources C
Years: 1985 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Discovery Year: 1974
Discovery Method: Geophysical Anomaly
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
Not available
Mineral Deposit Model
Model Name: Massive sulfide, kuroko
Orebody
Form: TABULAR
Structure
Type: R
Description: Anticlinorium
Type: L
Description: Overturned Anticline
Alterations
Alteration Type: L
Alteration Text: Sericite, Chlorite, Talc And Mariposite Occur In Tuffite Below The Mineralization
Rocks
Not available
Analytical Data
Analytical Data: AVERAGE GRADE: 0.5% CU, 2.5% PB, 7-10% ZN, 283.5 GM/TON AG, 2.8 GM/TON AU, CIM BULL, V. 74, NO. 833, P. 57
Materials
Ore: Tetrahedrite
Ore: Bournonite
Ore: Sphalerite
Ore: Galena
Ore: Bornite
Ore: Chalcopyrite
Gangue: Pyrite
Gangue: Barite
Gangue: Pyrrhotite
Comments
Comment (Location): LOCATION APPROXIMATED FROM USGS OFR 85-717, NO. J082 CLAIMS COVER LARGE AREA LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Workings): BY END OF 1984: MORE THAN 85000 FT OF LORE DRILLING FROM 170 SURFACE AND SUBSURFACE STATIONS AND APPROXIMATELY 5000 FT OF DRIFTS COMPLETED
Comment (Geology): DOMINANT STRATIGRAPHIC UNITS ARE MAFIC VOLCANIC ROCKS, SERPENTINITES AND TUFFACEOUS VOLCANICLASTIC ROCKS
Comment (Deposit): STRATIFORM HORIZON AT TUFFITE/ARGILLITE CONTACT CONTAINS MASSIVE SULFIDE, VEIN AND DISSEMINATED ORE; 0.5 FT THICK AU/AG-RICH ZONES, BASEMETAL RICH ZONES UP TO 90 FT THICK; MASSIVE BANDED ZN-RICH ORE OCCURS IN 5 STRATIFORM PODS WHICH AVERAGE 11-FT THICK; PYRITE, QUARTZ-PYRITE AND CHALCOPYRITE-BORNITE VEINS OCCUR STRATIGRAPHICALLY BELOW (?) THESE PODS; 3500 FT MINIMUM STRIKE LENGTH; WHITE CHERT AND BARITE-RICH ZONES WITH HIGH AU-AG VALVES OCCUR ON THE ENDS OF THE MASSIVE ORE ZONE
Comment (Development): CURRENTLY (AS OF 1985) UNDERGOING MINING FEASIBILITY STUDY AND VALIDATION OF CLAIMS PENDING USDA DECISION ON BOUNDARY ADJUSTMENTS TO ADMIRALTY I. NATIONAL MONUMENT; MINING COULD BEGIN BY 1987 AT 300 TPD USING OPEN STOPE METHODS, WITH GRADUAL INCREASE TO 600 TPD
Comment (Deposit): MOST LIKELY MAJOR HARD-ROCK MINING VENTURE IN ALASKA TO ACHIEVE NEW PRODUCTION IN THE 1980'S ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
References
Reference (Deposit): CIM BULL, V. 74, NO. 833, P. 57
Reference (Deposit): ADGGS SR 38, P. 18-19
Reference (Deposit): ADGGS SR 31, P. 18
Reference (Deposit): ALASKA CONSTRUCTION AND OIL, SEPT 1982, P. 44-48
Reference (Deposit): USGS CIRC 940, P. 29-30
Reference (Deposit): E AND MJ MINING ACTIVITY DIGEST, V. 11, NO. 5, P. 9
Reference (Deposit): ENGINEERING AND MINING JOURNAL, VOL. 185, NO. 1, P. 39
Reference (Deposit): USGS OFR 85-717, P. 95
Reference (Other Database): BAG-OFR-85-717-082
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