The South of Spruce Mtn. Altered Zone Gold-Silver Occurrence is a silver 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
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South of Spruce Mtn. Altered Zone Gold-Silver Occurrence MRDS details
Site Name
Primary: South of Spruce Mtn. Altered Zone Gold-Silver Occurrence
Commodity
Primary: Silver
Primary: Gold
Secondary: Lead
Tertiary: Zinc
Tertiary: Copper
Location
State: Alaska
District: Petersburg
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
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
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: Foliation Strikes Nw, Dips 75 Degrees W
Alterations
Not available
Rocks
Name: Schist
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous
Analytical Data
Analytical Data: 0.25 IN. WIDE QUARTZ VEIN SAMPLE 4S164 ASSAYS 0.5 PPM AU, 150 PPM AG, 2.1% PB, 0.48% ZN, 0.21% CU. 50 FT. IRON-STAIN SCHIST CHIP SAMPLE 4S158 ASSAYS 10 PPM AU, 10 PPM AG. DATA FROM REF. 1, TABLE 18, P. 274.
Materials
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Gold
Gangue: Pyrrhotite
Gangue: Quartz
Gangue: Pyrite
Comments
Comment (Deposit): IRON-STAINED ALTERED ZONE CONSISTS OF WHITE AND YELLOW SCHIST FOLLOWING FOLIATION OF GRAY SCHIST, AND CONTAINS DISSEMINATED PYRITE, PYRRHOTITE, SPHALERITE, CHALCOPYRITE, GALENA, AND GOLD, AND OCCASIONAL PODS OF QUARTZ. ZONE EXTENDS FROM 3,100 FT. TO 3,900 FT. ELEVATION, AND DISAPPEARS UNDER SCREE AT BOTH ENDS. ZONE IS 50-120 FT. THICK, AND CONTAINS 0.25 FT. THICK QUARTZ VEIN CONTAINING GALENA, CHALCOPYRITE, SPHALERITE, AND GOLD.
Comment (Location): USGS B 1525, FIGS. 43, 47 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Development): BIG DIAMOND AND OREGON GIRL CLAIMS STAKED IN VICINITY ABOUT 1900. SAMPLED BY USBM, USGS IN 1974 FOR B 1525.
Comment (Workings): NO MENTION OF WORKINGS, OTHER THAN CHANNEL SAMPLES BY USBM, USGS.
Comment (Deposit): THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.
References
Reference (Deposit): USGS B 1525, P. 144, FIGS. 43, 47, TABLE 18, PLATES 1, 3 (1984)
Reference (Other Database): BAG-B-1525-FIGS. 43, 47
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These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.
