Black Mt. Prospect

The Black Mt. Prospect is a tin and 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

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: Black Mt. Prospect
Secondary: Helen Fault

Commodity

Primary: Tin
Primary: Tungsten
Secondary: Lead
Secondary: 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: 1963
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: Core Of Normally-Faulted Domal Uplift

Type: L
Description: Helen Fault, N 20 Degrees E Striking High-Angle Normal Fault Forms Nw Border Of Stock

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Wolframite
Ore: Galena
Ore: Cassiterite
Ore: Sphalerite
Gangue: Topaz
Gangue: Fluorite
Gangue: Pyrrhotite
Gangue: Pyrite
Gangue: Quartz
Gangue: Tourmaline

Comments

Comment (Deposit): CASSITERITE AND WOLFRAMITE-BEARING TOPAZ-FLUORITE VEINS ALONG FAULT CONTROLLED GRANITE CONTACT; ADJACENT QUARTZ-TOPAZ GREISEN CONTAINING CASSITERITE, PYRITE, PYRRHOTITE, SPHALERITE AND GALENA.

Comment (Location): USGS PROF. PAPER 575-B, FIG. 1, P. B22. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Geology): PARTIALLY FAULT-BOUNDED GRANITE STOCK [0.4 SQ KM] INTRUDED INTO PRECAMBRIAN CARBONACEOUS METASED. ROCKS, ALTERED TO ANDALUSITE HORNFELS AT CONTACT; NEARBY PRECAMBRIAN ARGILLACEOUS LIMESTONE ALTERED TO TACTITE. BLACK MT. STOCK; MED-GR. SUBEQUIGRANULAR BIOTITE GRANITE, LOCALLY GREISENIZED.

Comment (Deposit): THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

References

Reference (Deposit): USGS PROF. PAPER 501-A, P. A5.

Reference (Deposit): USGS PROF. PAPER 575-B, P. B21-B25.

Reference (Deposit): USGS OFR 77-796-B, P. 7, LOC. 43.

Reference (Deposit): GSA BULLETIN, V. 94, NO. 6, P. 769-771.

Reference (Other Database): BAG-MF-426-13

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