Corundum Hill Olivine Deposit

Past Producer in Macon county in North Carolina, United States with commodities Corundum, Vermiculite, Olivine, Nickel

Geologic information

Identification information

Deposit ID 10025903
MRDS ID K001880
Record type Site
Current site name Corundum Hill Olivine Deposit
Related records 10297228

Geographic coordinates

Geographic coordinates: -83.28877, 35.14817 (WGS84)
Relative position 6 MILES SOUTHEAST OF FRANKLIN AND 1.25 MILES NORTHWEST OF GNEISS.
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Geographic areas

Country State County
United States North Carolina Macon

Commodities

Commodity Importance
Corundum Primary
Vermiculite Primary
Olivine Tertiary
Nickel Tertiary

Materials information

Materials Type of material
Corundum Ore
Olivine Ore
Vermiculite Ore

Alteration

  • (Local) Serpentinization

Host and associated rocks

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

Nearby scientific data

(1) -83.28877, 35.14817

Ore body information

  • Width 152.4M
    Length 365.76M

Comments on the geologic information

  • PERIDOTITE CONTAINS SEVERAL SCHIST INCLUSIONS, ESPECIALLY NEAR NORTHWEST CONTACT ZONE. SOME OF THE INCLUSIONS MAY HAVE BEEN FAULTED INTO PLACE. DEPOSIT CONSISTS ENTIRELY OF DUNITE, PART OF WHICH HAS BEEN SERPENTINIZED. NEAR BOTH ENDS OF THE FORMATION THE DUNITE IS COMPOSED OF COARSE-GRAINED, YELLOWISH, GRANULAR OLIVINE, MUCH OF WHICH IS SOUND. PARTS OF DUNITE ESPECIALLY NEAR FAULTS ARE HIGHLY SERPENTINIZED AND IN A FEW PLACES NEAR THE SCHIST INCLUSIONS NICKEL SILICATE MINERALS ARE VISIBLE. CONTACT ZONES AND MANY INTERIOR FAULTS ARE FILLED WITH VERMICULITE.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both metallic and non-metallic
Significant No
Year of first production 1910
Production years 1910 (CORUNDUM) 1933 (VERMICULITE)

Mining district

District name Ellijay Area

Comments on the workings information

  • EXTENSIVE UNDERGROUND WORKINGS FOR CORUNDUM AND VERMICULITE. SOME REACHING DEPTHS OF 300 FEET.

Comments on development

  • CORUNDUM WAS FIRST PRODUCED IN U.S. FROM THIS DEPOSIT. VERMICULITE PRODUCED INTERMITTENTLY SINCE 1933.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS K001880

Bibliographic references

  • Deposit

    HUNTER, C.E., 1941, FORSTERITE OLIVINE DEPOSITS OF NORTH CAROLINA AND GEORGIA: NORTH CAROLINA DIV. MINERAL RESOURCES BULL. 41. 117 P.

  • Deposit

    LARRABEE, D.M. AND SWEENEY, J.W., 1968, OLIVINE IN MINERAL RESOURCES OF THE APPALACHIAN REGION: U.S. GEOLOGICAL SURVEY PROF. PAPER 580, P.326-327

  • Deposit

    MURDOCK, T.G. AND HUNTER, C.E., 1946, THE VERMICULITE DEPOSITS OF NORTH CAROLINA: NORTH CAROLINA DIV. MINERAL RESOURCES BULL. 50, 44 P.

  • Deposit

    1941 GEOLMAP TENN. VALLEY AUTHORITY, REPOR

  • Production

    HUNTER, C.E., 1941, N.C. DIV. MIN. RES. BULL. 41

General comments

Subject category Comment text
Deposit ARER NEAR MINE BEING WORKED AS TOURIST ATTRACTION FOR CORUNDUM
Deposit First Production Year: PRE 1910 (FOR CORUNDUM); 1933 (FOR VERMICULITE)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1974 Fagan, James M. U.S. Geological Survey