Ross-Adams Mine

The Ross-Adams Mine 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: Ross-Adams Mine

Commodity

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

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

Not available

Deposit

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

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Form: PIPE

Structure

Type: L
Description: Many Steep Faults Cut Ore Body

Alterations

Not available

Rocks

Name: Peralkaline Granite
Role: Host
Age Type: Host Rock
Age in Years: 186.000000+-
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: 181.000000+-
Dating Method: K-Ar
Age Young: Middle Jurassic

Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Eocene

Analytical Data

Analytical Data: CHEMICAL ANALYSIS OF ORE GAVE 0.18-3.2% U AND AVERAGED 1.08% U, 0.76-566% THE AND AVERAGED 2.65%

Materials

Ore: Uraninite
Ore: Galena
Ore: Parisite
Ore: Brannerite
Gangue: Albite
Gangue: Quartz
Gangue: Pyrite
Gangue: Cordierite
Gangue: Tourmaline
Gangue: Riebeckite
Gangue: Acmite
Gangue: Zircon

Comments

Comment (Deposit): ORE BODY IS A FUSIFORM SHAPED AREA OF MINERAL CONCENTRATION WITHIN IGNEOUS INTRUSION. ORE MINERALS ARE IN VEINLETS AND DISSEMINATIONS WITHIN THIS BODY.

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

Comment (Commodity): LIST OF MINERALS IS PARTIAL

Comment (Production): ORE WAS EQUALLY RICH IN THORIUM, BUT EXTRACTION METHODS WERE TOO COSTLY AND THORIUM WAS NOT RECOVERED

Comment (Development): EXPLORATION HAS CONTINUED THROUGH 1982, BUT URANIUM PAKES ARE TOO LOW FOR MINING.

Comment (Reserve-Resource): ADITIONAL RESERVES AND RESOURCES HAVE BEEN DISCOVERED IN PLATE 1970'S, BUT TONNAGE AND GRADE ARE UNNAVAILABLE

References

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

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): USGS OPEN FILE 78-863/P.6-87

Reference (Production): USGS OPEN FILE 76-246

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