Keystone Claim

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.

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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