Bokan Mountain

The Bokan Mountain is a uranium mine located in Alaska at an elevation of 951 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: Bokan Mountain
Secondary: Ross-Adams Mine
Secondary: I+L Prospects, Atom-Marietta Prospect, Carol Ann Prospect

Commodity

Primary: Uranium
Tertiary: Thorium
Tertiary: REE
Tertiary: Niobium (Columbium)
Tertiary: Lead
Tertiary: Fluorine-Fluorite
Tertiary: Beryllium

Location

State: Alaska
District: Ketchikan District

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

Owner Name: Kendrick Bay Mining Co.

Owner Name: Standard Metals Co.

Production

Year: 1951
Time Period: 1957-1951

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1957
Year Last Production: 1971
Discovery Year: 1955
Discovery Method: Geophysical Anomaly
Years of Production:
Organization:
Significant: N
Deposit Size: M

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: L
Description: Many Steep Faults Cut Ore Body

Alterations

Not available

Rocks

Name: Mafic Intrusive Rock
Role: Associated
Age Type: Associated Rock Unit
Age Young: Middle Jurassic

Name: Mafic Intrusive Rock
Role: Associated
Age Type: Host Rock
Age Young: Eocene

Name: Peralkaline Granite
Role: Associated
Age Type: Host Rock
Age in Years: 171.000000+-
Dating Method: U-Pb (zircon)
Material Analyzed: Zircon
Age Young: Middle Jurassic

Name: Peralkaline Granite
Role: Associated
Age Type: Host Rock
Age in Years: 186.000000+-
Dating Method: K-Ar
Age Young: Middle Jurassic

Name: Peralkaline Granite
Role: Associated
Age Type: Host Rock
Age in Years: 181.000000+-
Dating Method: K-Ar
Age Young: Middle Jurassic

Name: Peralkaline Granite
Role: Host
Age Type: Host Rock
Age in Years: 181.000000+-
Dating Method: K-Ar
Age Young: Middle Jurassic

Name: Peralkaline Granite
Role: Host
Age Type: Host Rock
Age in Years: 171.000000+-
Dating Method: U-Pb (zircon)
Material Analyzed: Zircon
Age Young: Middle Jurassic

Name: Peralkaline Granite
Role: Host
Age Type: Host Rock
Age in Years: 186.000000+-
Dating Method: K-Ar
Age Young: Middle Jurassic

Analytical Data

Analytical Data: ANALYSES OF ORE GAVE 0.18-3.2% U (AVERAGE OF 1.08%), 0.76-5.66% TH (AVERAGE OF 2.65%) AND FROM O TO SEVERAL PERCENT RAE

Materials

Ore: Uraninite
Ore: Parisite
Ore: Xenotime
Ore: Monazite
Ore: Thorite
Ore: Galena
Ore: Brannerite
Gangue: Tourmaline
Gangue: Cordierite
Gangue: Quartz
Gangue: Albite
Gangue: Riebeckite
Gangue: Zircon
Gangue: Pyrite

Comments

Comment (Reserve-Resource): ADDITIONAL RESERVES AND RESOURCES HAVE BEEN LOCATED IN LATE 1970'S, BUT TONNAGE AND GRADE ARE UNPUBLISHED

Comment (Commodity): LIST OF MINERALS IS PARTIAL

Comment (Location): LOCATION GIVEN IS FOR ROSS-ADAMS MINE, OTHER LOCATIONS ARE TO THE EAST LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Production): ORE WAS AT LEAST AS RICH IN THORIUM, BUT IT WAS NOT RECOVERED

Comment (Development): EXPLORATION HAS CONTINUED AT LEAST THROUGH 1982, BUT URANIUM PRICES ARE TOO LOW FOR MINING

Comment (Deposit): VEINLETS AND DISSEMINATIONS OF ORE ARE IN FUSIFORM SHAPED ZONE WITHIN PERALKALINE INTRUSION. ALSO, SEVERAL INTERESTING PROSPECTS TO THE EAST, (I+L, ETC.) ARE IN VEINS.

Comment (Workings): MINING FROM AN OPEN PIT AT FIRST. UNDERGROUND WORKINGS MAY HAVE BEEN DEVELOPED LATER

References

Reference (Deposit): ADGGS GEOLOGIC REPORT 44, P. 7,9-10

Reference (Deposit): USGS OPEN FILE 76-246, P. 33-34

Reference (Deposit): ADGGS SPECIAL REPORT 31, P. 9

Reference (Deposit): CAN J EARTH SCI, VOL 20, NO 2, P. 236-245

Reference (Deposit): ECON GEOL V 73, NO 4, P. 512-523

Reference (Production): USGS OPEN FILE 76-246

Reference (Deposit): USGS BULLETIN 1154, P. 62-73

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