The Keystone Claim 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
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Keystone Claim MRDS details
Site Name
Primary: Keystone Claim
Commodity
Primary: Gold
Primary: Silver
Secondary: Tungsten
Secondary: Lead
Secondary: Zinc
Location
State: Alaska
District: Kantishna
Land Status
Land ownership: National Park
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: 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: R
Description: Kantishna Antiform
Alterations
Not available
Rocks
Name: Schist
Role: Host
Age Type: Host Rock Unit
Age Young: Early Cambrian
Analytical Data
Analytical Data: SEE DATA FOR PENNSYLVANIA CLAIM
Analytical Data: HIGHLY VARIABLE ASSAYS ALONG VEIN
Materials
Gangue: Pyrite
Gangue: Quartz
Gangue: Calcite
Comments
Comment (Reserve-Resource): ADGGS RI 83-12, P.20
Comment (Deposit): TWO PRINCIPAL VEINS ARE CUT BY A THIRD VEIN ON KEYSTONE CLAIM: PENNSYLVANIA VEIN STRIKES N 65 E, DIPS 85 S; KEYSTONE VEIN STRIKES N 50 E, DIPS 60 S AND IS 3 TO 6 FT WIDE; CROSS-CUTTING VEIN STRIKES N 30 E, DIPS STEEPLY AND IS 6 FT WIDE; FREE MILLING GOLD IN QUARTZ
Comment (Location): LOCATION IS OF EASTERN END LINE OF KEYSTONE CLAIM WHERE IT ADJOINS PENNSYLVANIA CLAIM LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Commodity): NO DATA ON PB, ZN OR W CONTENT; SCHEELITE MAY BE FROM PENNSYLVANIA CLAIM
Comment (Workings): NUMEROUS OPEN CUTS, A SHAFT AND A TUNNEL
Comment (Geology): GOLD QUARTZ VEINS IN BIRCH CREEK ROCKS
Comment (Deposit): MUCH OF DATA IS INSEPARABLE FROM PENNSYLVANIA CLAIM; SEE ALSO: PENNSYLVANIA ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
References
Reference (Deposit): USGS BULL 687, P.102-103
Reference (Deposit): DAVIS, J.A., 1923, THE KANTISHNA REGION, AK, IN STEWART B.D., ANNUAL REPORT OF THE MINE INSPECTOR TO THE GOVERNOR OF ALASKA, 1922: JUNEAU, AK, P.130
Reference (Deposit): USGS BULL 836, P.331-332
Reference (Deposit): A.DGGS OFR 98, P.32
Reference (Deposit): USGS OFR 77-169A, P.44 10C. 9
Reference (Deposit): ADGGS RI 83-12, P.20
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