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Minor podiform chromite deposit, 1 of 1 in Macon county (in North Carolina)
Sections of this page: [Geologic] - [Economic] - [Reference]
| Other names | Olivine Deposit Number Nine |
|---|---|
| Country | United States |
| State or province | North Carolina |
| Geographic location: | 35°11'21"N,
83°16'43"W (-83.278611, 35.189167) |
| Geographic context: | (click for info) |
| Deposit type | minor podiform chromite |
| Model type | Minor Podiform |
| Deposit form | lens |
| Deposit texture | fine-grained massive |
| Ore type | Unknown |
| Age of deposit | Ordovician |
| Age (m.y.) | 460million years |
| Area of deposit | 3.7sq m |
| Ore body length | 3.7m |
| Ore body width | 1m |
| Mineralogy | chromite olivine talc chlorite |
| Host rock type | dunite |
| Host rock length | 305 |
| Host rock width | 300 |
| Paleotectonic setting | suprasubduction |
| Ophiolite zone | tectonite |
| Deposits < 10km | podiform chromite |
| Rocks within 5km | dunite biotite schist hornblende gneiss |
| Geologic map unit | -83.2786111111111, 35.1891666666667 |
| Nearby scientific data | Find additional scientific data near this location |
| Discovery date | 1917 | |
|---|---|---|
| Startup date | 1917 | |
| Ore depth | 0 | m |
| Comments | Production is unknown from a pit 12 m long, 1.8 m wide, 4.6 m deep. Chromite lens is 3.7 m long, 0.61 m wide, and probably at least 3 m deep. Based on these dimensions, deposit size is estimated at 24 t. Grade is unknown. Chromite crystals are mostly fine-grained, but can get up to 6 mm across. Macon County. |
|---|---|
| References | Hunter, C.E., and Rankin, H.S., 1941, Forsterite olivine deposits of North Carolina and Georgia: Georgia Division of Mines, Mining and Geology Bulletin no. 47, 117 p. Hunter, C.E., Murdock, T.G., and MacCarthy, G.R., 1942, Chromite deposits of North Carolina: North Carolina Division of Mineral Resources Bulletin no. 42, 39 p. Hadley, J.B., and Nelson, A.E., 1971, Geologic map of the Knoxville 1 x 2 quadrangle, North Carolina, Tennessee, and South Carolina: U.S. Geological Survey Miscellaneous Geologic Investigations Map, I-654, scale 1:250,000. |