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Blackjack Mine

Past Producer in Mitchell county in North Carolina, United States with commodity Mica
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Geologic information

Identification information

Deposit ID 10102363
MRDS ID K003594
Record type Site
Current site name Blackjack Mine

Geographic coordinates

Geographic coordinates: -82.07206, 36.05092 (WGS84)
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Geographic areas

Country State County
United States North Carolina Mitchell

Comments on the location information

  • SEE PLATE 3, USGS PROF. PAPER 577 FOR LOCATION

Commodities

Commodity Importance
Mica Primary

Comments on the commodity information

  • MUSCOVITE - RUBY, HARD, CLEAR, MINOR BENDING

Alteration

  • (Local) Unweathered

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -82.07206, 36.05092
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Geologic structures

Type of structure Local
Structure description Pegmatite Is Concordant With The Foliation Of The Enclosing Country Rock

Ore body information

  • General form PODS
    Strike NE
    Dip SE
    Thickness 0.46M
    Plunge SW

Comments on the geologic information

  • PLAGIOCLASE - QUARTZ - MUSCOVITE PEGMATITE. SOME LARGE BOOKS OF MUSCOVITE ARE IN THE GNEISS ADJACENT TO PEGMATITE PODS

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Year of first production 1928

Mining district

District name Spruce Pine District/Plumtree Area

Comments on the workings information

  • CUT 150 FT LONG, 40 FT DEEP, ADITS 40 FT, INCLINE 55 FT, DRIFT 70 FT

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS K003594

Bibliographic references

  • Deposit

    LESURE, F.G., 1968, MICA DEPOSITS OF THE BLUE RIDGE IN NORTH CAROLINA: U.S. GEOLOGICAL SURVEY PROF. PAPER 577, 124 P

  • Deposit

    1968 COMPILE LESURE, F.G. ; REPOR

  • Production

    LESURE, F.G., 1968, USGS PROF. PAPER 577.

General comments

Subject category Comment text
Deposit DATA ABSTRACTED FROM USGS PROF. PAPER 577.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1975 Fagan, James M. U.S. Geological Survey