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Dark Ridge Olivine deposit, Webster-Balsam, Jackson Co., North Carolina, USA

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Latitude & Longitude (WGS84): 35° 24' 45'' North , 83° 6' 3'' West
Latitude & Longitude (decimal): 35.4125, -83.1008333333


A former Cr-Talc deposit/mine.

COMPOSED OF UNUSUALLY COARSE GRAINED DUNITE AND SAXONITE. SHATTERED OLIVINE CRYSTALS AS LARGE AS SIX INCHES IN DIAMETER OCCUR THROUGHOUT CORE. SMALL CRYSTALS OF CHROMITE ARE VISIBLE THROUGHOUT DUNITE AND AT MANY PLACES SEAMS OF MASSIVE CHROMITE OUTCROP. SAXONITE OCCURS CHIEFLY IN BORDER ZONE OF PERODITITE OR AS SMALL FAULT BLOCKS WITHIN DUNITE. SAXONITE IS PARTLY ALTERED TO SERPENTINE AND STEATITE. BRONZITE CRYSTALS AVERAGE 1/4 IN. IN DIAMETER AND MAKE UP 10% OF SAXONITE. BRONZITE IS OFTEN ALTERED TO TALC.

Host Rock: Mafic Gneiss

Mineral List


5 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

LEWIS, J. VOLNEY (1922), DEPOSITS OF CHROME ORE, USGS BULLETIN 725.

HUNTER, C. E. (1941), FORSTERITE OLIVINE DEPOSITS OF NORTH CAROLINA AND GEORGIA: NORTH CAROLINA DIVISION OF MINERAL RESOURCES BULLETIN 41, 117 pp.: 14, 15 & Pl 7.

TENNESSEE VALLEY AUTHORITY (1941), GEOLOGIC MAP, REPORT.

HUNTER, C.E. AND OTHERS (1942), CHROMITE DEPOSITS OF NORTH CAROLINA: NORTH CAROLINA DIV. MINERAL RESOURCES BULL. 42. 39 PP.

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

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10025915 & 10175907.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0370990024.

CRIB RECORD NO. K001893.

 
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