The Spirit Mountain Prospect is a copper and nickel 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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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.
Spirit Mountain Prospect MRDS details
Site Name
Primary: Spirit Mountain Prospect
Secondary: Canyon Creek
Commodity
Primary: Copper
Primary: Nickel
Tertiary: Cobalt
Tertiary: Silver
Tertiary: Platinum
Tertiary: Zinc
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: 1907
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Form: LENTICULAR
Structure
Type: R
Description: Spirit Mountain Thrust Fault
Type: L
Description: Major Fault At N40e With Dip Of 45 Nw; Cut By Set Of Smaller Perpendicular Faults
Alterations
Not available
Rocks
Name: Pyroxenite
Role: Host
Age Type: Host Rock
Age in Years: 123.000000+-4.000000
Dating Method: K-Ar
Material Analyzed: Biotite
Age Young: Cretaceous
Analytical Data
Analytical Data: 0.88% NI, 0.89% CU IN DISSEMINATED ORE FROM OPEN CUT ON PERIDOTITE BODY, ADGGS GR40, P. 6
Analytical Data: 0.09 TO 7.61% NI, 0.06 TO 1.56% CU, 0.18% CO IN ONE SAMPLE, USGS BULL 943, P. 56
Materials
Ore: Sphalerite
Ore: Pentlandite
Ore: Bravoite
Ore: Chalcopyrite
Gangue: Tremolite
Gangue: Magnetite
Gangue: Pyrrhotite
Gangue: Pyrite
Gangue: Antigorite
Gangue: Epidote
Gangue: Talc
Comments
Comment (Deposit): NICKEL AND COPPER-BEARING SULFIDES IN DISSEMINATED INTERSTITIAL GRAINS AND SMALL MASSIVE LENSES; HOSTED IN DISCONTINUOUS SILL-LIKE BODIESOF ALTERED PERIDOTITE AND PYROXENITE; MASSIVE SULFIDES IN STRINGERS ANDLENSES RANGING FROM LESS THAN 1 IN TO A FEW FT IN THICKNESS; LARGEST LENS REPORTED 3 FT BY 12 FT
Comment (Workings): EXPLORED BY SHALLOW PITS AND A SHORT ADIT DRIVEN BEFORE 1917
Comment (Development): WELL EXPLORED PROSPECT; DEVELOPED ON SMALL SCALE AS A COPPER PROSPECT BETWEEN 1907 AND 1917; RE EXAMINED IN 1942 BY USGS AS NI PROSPECT; 6 CLAIMS RELOCATED BY PROSPECTORS IN 19654; DRILLED BY INDUSTRY IN 1960S, RESULTS UNKNOWN
Comment (Geology): BELT OF SMALL BASIC AND ULTRABASIC SILLS CUT AMPHIBOLITE FACIES AND RETROGRADE GREENSCHIST FACIES SCHISTS AND LIMESTONES OF MISSISSIPPIAN STRELNA FORMATION ALONG A MAJOR N DIPPING THRUST ZONE; INTRUSIVES RANGE IN COMPOSITION FROM MAFIC QUARTZ DIORITE TO HORNBLENDITE, PERIDOTITE AND PYROXENITE. STRELNA FORMATION (MISS): METAMORPHOSED SCHIST AND LIMESTONE INTRUDED BY BASIC AND ULTRABASIC SILLS. AGE OF PERIDOTITE AND PYROXENITE CRET (K/AR, 123+/-4 M. Y. , BIOTITE HORNFELS ADJACENT TO PERIDOTITE), USGS OFR 80-892A.
Comment (Commodity): AS ABUNDANT IN SOME SAMPLES; MINOR ANOMALOUS CO, AG AND PT GROUP ELEMENTS, ESPECIALLY PD, DETECTED IN ANALYSIS; UP TO 20 PPM AG PRESENT INSOME SAMPLES
Comment (Location): BEST LOCATION: ADGGS GR 40, FIG. 3. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Reserve-Resource): USGS BULL 1223, P. 39 LISTS RESERVES AS APPROXIMATELY 6500 TONS OF ORE WITH 0.7% NI AND 0.5% CU
Comment (Deposit): LISTED AS MAJOR ALASKAN PROSPECT IN ADGGS SR33 ALTHOUGH TO DATE KNOWN DEPOSIT IS TOO SMALL AND TOO LOW GRADE TO BE CONSIDERED ECONOMIC ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
References
Reference (Deposit): USGS BULL 576, P. 52-53
Reference (Deposit): USGS BULL 712, P. 91-98
Reference (Other Database): BAG-OFR-80-892B-52
Reference (Reserve-Resource): USGS BULL 943-C, P. 55-56; ADGGS GR 40, P. 6
Reference (Deposit): USGS BULL 943, P. 49-57
Reference (Deposit): USGS BULL 1223, P. 13,39
Reference (Deposit): USGS MF-438, LOC. 61
Reference (Deposit): USGS OFR 80-892B, LOC. 52
Reference (Deposit): USBM RI 3913
Reference (Deposit): ADGGS GR 40
Reference (Deposit): ADGGS SR 33
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