The Foggy Day Prospect is a uranium mine located in Alaska.
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
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Foggy Day Prospect MRDS details
Site Name
Primary: Foggy Day Prospect
Commodity
Primary: Uranium
Tertiary: Tin
Tertiary: Tungsten
Tertiary: Copper
Location
State: Alaska
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1951
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 77.000000+-3.000000
Dating Method: K-Ar
Material Analyzed: Biotite
Analytical Data
Analytical Data: AVERAGE OF LENS PLUS ADJACENT GRANITE: 0.07% EU, USGS CIRCULAR 214, P. 6.
Analytical Data: LENS CONTAINED MAX. OF 2.1% EU, AVG. 0.1-0.2% EU OVER WHOLE BODY
Materials
Ore: Cassiterite
Ore: Scheelite
Ore: Chalcopyrite
Ore: Tetrahedrite
Gangue: Limonite
Gangue: Hematite
Gangue: Siderite
Gangue: Malachite
Comments
Comment (Location): USGS CIRCULAR 214, PLATE 1, PROSPECT 3; USGS BULLETIN 1129, PLATE 1, "BROOKS MT. URANIUM PROSPECT." LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Deposit): 4.3 M BY 1.2 M LENTICULAR PEGMATITE BODY CONTAINED ZEUNERITE IN TABULAR CRYSTALS UP TO 1/4 IN IN DIAMETER EMBEDDED IN HEMATITE-LINED RUGS; MINOR AMOUNTS OF PYRRHOTITE, ARSENOPYRITE, FLUORITE, SCHEELITE, CHALCOPYRITE, TERTRAHEDRITE, CASSITERITE, BISMUTH, AND ZEUNERITE DISSEMINATED IN ADJACENT OXIDIZED GRANITE.
Comment (Workings): 20 FT DEEP OPEN CUT; ENTIRE LENS REMOVED, 1951.
Comment (Geology): BROOKS MT PLUTON; PORPHYRITIC-SERIATE BIOTITE GRANITE, CUT BY PEGMATITE.
References
Reference (Other Database): BAG-MF-426-11
Reference (Deposit): USGS CIRCULAR 214, P. 3-6.
Reference (Deposit): USGS OFR 75-217, P. 19.
Reference (Deposit): USGS OFR 77-796-B, P. 6, LOC. 39.
Reference (Deposit): USGS OFR 78-1-C, P. 14.
Reference (Deposit): GSA BULLETIN, V. 94, NO. 6, P. 769-771.
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