Keystone Claim

Occurrence in Alaska, United States with commodities Gold, Silver, Lead, Zinc, Tungsten

Geologic information

Identification information

Deposit ID 10000617
MRDS ID A011226
Record type Site
Current site name Keystone Claim
Related records 10136830

Geographic coordinates

Geographic coordinates: -150.92789, 63.54401 (WGS84)
Location accuracy 500(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • 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).

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Secondary
Zinc Secondary
Tungsten Secondary

Comments on the commodity information

  • NO DATA ON PB, ZN OR W CONTENT; SCHEELITE MAY BE FROM PENNSYLVANIA CLAIM

Materials information

Materials Type of material
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Analytical data

Result HIGHLY VARIABLE ASSAYS ALONG VEIN
Result SEE DATA FOR PENNSYLVANIA CLAIM

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Birch Creek
    Rock description Birch Creek
    Stratigraphic age (youngest) Early Cambrian

Nearby scientific data

(1) -150.92789, 63.54401

Geologic structures

Type of structure Regional
Structure description Kantishna Antiform

Ore body information

  • Thickness 1.83M
    Length 365.76M

Comments on the geologic information

  • GOLD QUARTZ VEINS IN BIRCH CREEK ROCKS

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Kantishna

Land status

Ownership category National Park

Comments on the reserve resource information

  • ADGGS RI 83-12, P.20

Workings at the site

  • Type of workings Surface/Underground
    Length 15.24M

Comments on the workings information

  • NUMEROUS OPEN CUTS, A SHAFT AND A TUNNEL

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011226

Bibliographic references

  • Deposit

    USGS BULL 687, P.102-103

  • 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

  • Deposit

    USGS BULL 836, P.331-332

  • Deposit

    A.DGGS OFR 98, P.32

  • Deposit

    USGS OFR 77-169A, P.44 10C. 9

  • Deposit

    ADGGS RI 83-12, P.20

General comments

Subject category Comment text
Deposit MUCH OF DATA IS INSEPARABLE FROM PENNSYLVANIA CLAIM; SEE ALSO: PENNSYLVANIA ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
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

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1984 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey