I and L Prospect 3

The I and L Prospect 3 is a uranium and thorium mine located in Alaska at an elevation of 1,201 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: I and L Prospect 3
Secondary: I and L Prospect 4
Secondary: I and L Prospect 1
Secondary: I and L Prospect 2
Secondary: Limestone Creek
Secondary: Bedrock Creek
Secondary: Kramer Cree
Secondary: Ptormigan Creek
Secondary: Russian John Creek

Commodity

Primary: Uranium
Primary: 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

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1955
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Feldspars In Pegmatite Are Altered To Clay Minerals

Rocks

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

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

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

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

Analytical Data

Analytical Data: AVERAGE 0.18% U. 3 THORIUM SAMPLES AVERAGED 0.16%
Analytical Data: CHEMICAL ANALYSIS OF 10 CHIP SAMPLES: MAXIMA 0.95% U

Materials

Ore: Uraninite
Ore: Xenotime
Ore: Parisite
Ore: Brannerite
Gangue: Quartz
Gangue: Ilmenite
Gangue: Zircon
Gangue: Sphene
Gangue: Albite

Comments

Comment (Workings): SEVERAL TRENCHES AND SMALL OPEN PITS

Comment (Deposit): SEVERAL SUBPARALLEL DIKES ARE DISCONTINUOUS AND CONTAIN VEINLETS IN FRACTURES

References

Reference (Deposit): USGS BULLETIN 1154, P. 85-88

Reference (Deposit): USGS CIRCULAR 751-B, P. B74-B 75

Reference (Deposit): USGS OPEN FILE 78-863, P. 6-8

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