Spirit Mountain Prospect

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

Name: Spirit Mountain Prospect  

State:  Alaska

County:  na

Elevation:

Commodity: Copper, Nickel

Lat, Long: 61.30944, -144.26056

Map: View on Google Maps

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.


Satelite image of the Spirit Mountain Prospect

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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