The Spruce Hen Prospect is a tungsten 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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Spruce Hen Prospect MRDS details
Site Name
Primary: Spruce Hen Prospect
Commodity
Primary: Tungsten
Tertiary: Molybdenum
Location
State: Alaska
District: Fairbanks
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
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: Ground-Water Leaching Of Scheelite In Weathered Zone May Have Occured
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Molybdenite
Ore: Scheelite
Gangue: Clinozoisite
Gangue: Diopside
Gangue: Calcite
Gangue: Hornblende
Gangue: Garnet
Gangue: Vesuvianite
Comments
Comment (Deposit): NO GOLD ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Comment (Location): USGS MF-410, LOC. 29. PROSPECT ON THE DIVIDE BETWEEN THE HEADWATERS OF STEELE AND FIRST CHANCE CREEKS. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Development): CLAIMS STAKED BY SUMMER, 1916. 5 LODES PROSPECTED BY TRENCHES. NO RECORD OF ANY PRODUCTION.
Comment (Deposit): SMALL GRAINS OF SCHEELITE ARE DISSEMINATED THROUGHOUT 5 LODES AS MUCH AS 4 FT. WIDE IN SCHIST WITH SOME INTERBEDDED LIMESTONE AND METAMORPHOSED BASIC IGNEOUS ROCK. LODES ARE SKARN DEPOSITS WITH SCHEELITE, FLUORITE, GARNET, AND OTHER TYPICAL CONTACT-METAMORPHIC MINERALS THAT REPLACED LIMESTONE; ABOUT 3 FT. THICK. ONE LODE IS CUT BY BY SCHEELITE-BEARING QUARTZ VEIN. SCHEELITE IN ZONES IN BLOCKS OF ALTERED IGNEOUS ROCK (MAINLY HORNBLENDE) ON DUMP. A LITTLE MOLYBDENITE REPORTED IN ORE
Comment (Workings): WORKINGS CONSISTED OF A 70 FT. INCLINED SHAFT, PITS, AND TRENCHES
Comment (Geology): SEAMS OF GOUGE ALONG WALLS OF LODE. DEPOSIT ALONG WESTERN PERIPHERY OF LARGE BODY OF PORPHYRITIC GRANITE. SCHEELITE CONCENTRATIONS IN ZONES AS MUCH AS 6 IN. WIDE.
References
Reference (Deposit): USGS MF-410 (D-2), LOC. 29
Reference (Deposit): USGS BULL. 662, P. 422-423.
Reference (Deposit): USGS BULL. 188, 201-203.
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