Keystone

The Keystone is a copper mine located in Alaska at an elevation of 381 feet.

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
Secondary: Threeman Copper Cop
Secondary: Discovery, Scorcher
Secondary: Jay, Redemption
Secondary: Climax Ajax
Secondary: Cliff, Montezuma
Secondary: Steckmest
Secondary: Petersen
Secondary: Daisy, Buckeye
Secondary: Threeman

Commodity

Primary: Copper
Tertiary: Cobalt
Tertiary: Zinc
Tertiary: Silver

Location

State: Alaska

Land Status

Land ownership: Private
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

Type: Located Claim
Type: Patented

Workings

Not available

Ownership

Owner Name: John Petersen
Company ID: 5050005
Info Year: 1978

Production

Year: 1915
Time Period: 1904-1915
Description: Total Silver Output 1904-1915 5308 Ounces
Year: 1915
Time Period: 1904-1915
Description: Total Gold Output 1904-1915 101 Ounces
Year: 1915
Time Period: 1904-1915
Description: Total Copper Output 1904-1915 525326 Kilograms
Year: 1915
Description: Silver Output 1400 Ounces
Year: 1915
Description: Gold Output 30 Ounces
Year: 1915
Description: Copper Output 113250 Kilograms
Year: 1912
Description: Silver Output 3300 Ounces
Year: 1912
Description: Gold Output 48 Ounces
Year: 1912
Description: Copper Output 272253 Kilograms
Year: 1911
Description: Silver Output 608 Ounces
Year: 1911
Description: Gold Output 14 Ounces
Year: 1911
Description: Copper Output 78800 Kilograms
Year: 1910
Description: Copper Output 54360 Kilograms
Year: 1906
Description: Copper Output 5300 Kilograms
Year: 1904
Description: Copper Output 1359 Kilograms

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Years of Production:
Organization:
Significant: N

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Geology): SCHIST SHEAR ZONES CARRY CHALCOPYRITE AND PYRRHOTITE. COUNTRY ROCK GREENSTONE, GRAYWACKE, AND SLATE. Workings consist of: Level 0 - 116.1 m. elev. - 18.3 m. of workings; Level 1 - 100.6 m. elev. - 18.3 m. of workings; Level 2 - 77.1 m. elev. - 152.4 m. of workings; Level 3 - 57.3 m. elev. - 76.2 m. of workings; Level 4 - 41.8 m. elev. - Caved; Level 5 - 21.3 m. elev. - 2 caved portals.

References

Reference (Deposit): MLA5-84 218 pp., (Locality C-73)

Reference (Deposit): RI5245 pp. 1, 5-6

Reference (Deposit): RI5320 pp. 3, 5-7, 16, 19-21

Reference (Deposit): I453

Reference (Deposit): B1246 pp. 69-70

Reference (Deposit): MF392

Reference (Deposit): OF79-973 75 pp.

Reference (Deposit): MR32

Reference (Deposit): B622i pp. 131-139

Reference (Deposit): B773e pp. 141-158

Reference (Deposit): BMOF69-73

Reference (Deposit): PE96-3 20 pp.

Reference (Deposit): OF82-1029

Reference (Deposit): B1139 363 pp.

Reference (Deposit): MIRL 27 p. 58

Reference (Deposit): BMOF83-81 229 pp.

Reference (Deposit): B692g pp. 144, 148

Reference (Deposit): B712a p. 33

Reference (Deposit): B739a p. 24

Reference (Deposit): B963B p. 57

Reference (Deposit): B989E pp. 298, 302

Reference (Ownership): ALASKA KARDEX 096-048

Reference (Deposit): B379e p. 95

Reference (Deposit): B442h p. 165

Reference (Deposit): B443 pp. 52, 54-55, 61-62

Reference (Deposit): B520c p. 27

Reference (Deposit): B542g pp. 97, 101-102, 108-110

Reference (Deposit): B592d p. 62

Reference (Deposit): B592k p. 241

Reference (Deposit): B605 pp. 14, 51, 56-57, 61, 70-96

Reference (Deposit): B642g p. 138

Reference (Deposit): BMB142 pp. 43, 52

Reference (Deposit): BMB153 p. 50

Reference (Deposit): B662h pp. 184, 186

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