| Deposit ID | 10025781 |
|---|---|
| MRDS ID | K001726 |
| Record type | Site |
| Current site name | Democrat Olivine Deposit |
| Geographic coordinates: | -82.49792, 35.78593 (WGS84) |
|---|---|
| Relative position | 0.5 MI WEST OF DEMOCRAT AND EXTENDS SOUTHWESTWARD FOR 1.5 MI |
Political divisions (FIPS codes)
Buncombe(county)
North Carolina(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Barnardsville(quadrangle 1:24,000 scale)
Asheville(quadrangle 1:100,000 scale)
Knoxville(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper French Broad(hydrologic unit)
French Broad-Holston(hydrologic accounting unit)
Upper Tennessee(hydrologic subregion)
Tennessee(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | North Carolina | Buncombe |
| Commodity | Importance |
|---|---|
| Feldspar | Primary |
| Nickel Critical | Secondary |
| Olivine | Secondary |
| Chromium Critical | Secondary |
| Platinum Critical | Tertiary |
| Palladium Critical | Tertiary |
| Rhodium Critical | Tertiary |
| Talc-Soapstone | Tertiary |
| Materials | Type of material |
|---|---|
| Chromite | Ore |
| Feldspar | Ore |
| Olivine | Ore |
| Talc | Ore |
| Result | 12 PPB PT, 11 PPB PD, 1.5 PPB RH IN ROCK SAMPLE |
|---|---|
| Result | <30 PPB PT, <30 PPB PD, 43 PPB RH IN CHROMITE CONCENTRATES. PLACER CHROMITE WAS SAID TO CONTAIN 48% CR2O3 |
| Result | CHROMITE ANALYSIS YIELDED 55.52% CR2O3, 28.5% FE2O3, 0.8% SIO2, 0.07% P, TR S |
| Result | CR:FE=1.9:1 |
| Model code | 16 |
|---|---|
| USGS model code | 8b |
| Deposit model name | Podiform chromite (major) |
| Host or associated | Associated |
|---|---|
| Rock type | Metamorphic Rock > Gneiss |
| Rock unit name | Tallulah Falls Formation;Tallulah Falls Formation |
| Rock description | Tallulah Falls Formation;Tallulah Falls Formation |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite |
| Rock unit name | Democrat Dunite Body |
| Rock description | Democrat Dunite Body |
| (1) | -82.49792, 35.78593 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | East Of Brevard Fault Zone |
| Type of structure | Local |
| Structure description | Fractures And Joints |
| General form | TABULAR |
|---|---|
| Dip | } |
| Length | 2255.52M |
| Width | 182.88M |
| General form | TABULAR |
|---|---|
| Dip | } |
| Development status | Occurrence |
|---|---|
| Commodity type | Both |
| Deposit size | Small |
| Significant | No |
| District name | Canton-Democrat Area |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | K001726 |
LIPIN, 1984; HUNTER AND MURDOCK, 1942
HUNTER, C.E., 1941, FORSTERITE OLIVINE DEPOSITS OF NORTH CAROLINA AND GEORGIA: NORTH CAROLINA DIVISION OF MINERAL RESOURCES BULLETIN 41, P. 61-63.
LARRABEE, D.M., AND SWEENEY, J.W., 1968, OLIVINE, IN MINERAL RESOURCES OF THE APPALACHIAN REGION: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 580, P. 326-327.
CARPENTER, R.H., AND HALE, R.C., 1967, NICKELIFEROUS SOILS AND STREAM SEDIMENTS ASSOCAITED WITH PERIDOTITES NEAR DEMOCRAT, NORTH CAROLINA: SOUTHEASTERN GEOLOGY, V. 8, NO. 1, P. 9-18.
HUNTER, C.E., AND MURDOCK, T.G., 1942, CHROMITE DEPOSITS OF NORTH CAROLINA: NORTH CAROLINA DIVISION OF MINERAL RESOURCES BULLETIN 42, P. 5-7.
1941 GEOLMAP TENNESSEE VALLEY AUTHORITE, REPORT
1967 GEOCHEM TENNESSEE VALLEY AUTHORITE, REPORT
HUNTER, 1941
| Subject category | Comment text |
|---|---|
| Deposit | FLEDSPAR IS IN PEGMATITES THAT CUT DUNITE BODY. NICKEL SILICATE MINERALS ARE FOUND IN CRACKS, JOINTS, AND AS INCRUSTATIONS. THIS DEPOSIT PROBABLY CONTAINS AS MUCH CHROMITE AS ANY IN THE ENTIRE OLIVINE BELT. THE CHROMITE IS DISSEMINATED THROUGHOUT THE OLIVINE, FORMS MASSIVE LENSES AND VEINS, AND IS PRESENT AS PLACER AND RESIDUAL ACCUMULATIONS. DEPOSIT EXTENDS 1.5 MI SOUTHWEST FROM IVY CREEK. IT IS ABOUT 600 FT WIDE AT ITS NORTHERN END, TAPERING TO A NARROW BELT AT THE SOUTHERN END |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-1974 | Fagan, James M. | U.S. Geological Survey | |
| Updater | 01-DEC-1993 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.