Day Book Chromite Prospect, Day Book, Yancey County, North Carolina, USAi
| Regional Level Types | |
|---|---|
| Day Book Chromite Prospect | Prospect |
| Day Book | Town |
| Yancey County | County |
| North Carolina | State |
| USA | Country |
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Latitude & Longitude (WGS84):
35° 57' 56'' North , 82° 17' 2'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Burnsville | 1,660 (2017) | 5.6km |
| Bakersville | 452 (2017) | 12.6km |
| Spruce Pine | 2,134 (2017) | 20.5km |
| Banner Hill | 1,497 (2011) | 22.3km |
| Erwin | 5,979 (2017) | 23.3km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Mountain Area Gem and Mineral Association (MAGMA) | Asheville, North Carolina | 47km |
| Southern Appalachian Mineral Society | Asheville, North Carolina | 47km |
Mindat Locality ID:
102428
Long-form identifier:
mindat:1:2:102428:2
GUID (UUID V4):
a7482b78-4001-409f-b350-e6d4de962c4d
Other/historical names associated with this locality:
Day Book Olivine Quarry; Day Book No.1, Day Book No. 2, Day Book Quarry; Ray Mine
REF: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.
Commodities (Major) - Olivine; (Trace) - Chromium, Talc-Soapstone
Development Status: Producer
Host Rock: Hornblendite, Gneiss, Schist
A former Al-Cr-Fe-Mg (magnesite)-silica occurrence/mine located 3 miles N of Burnsville on Mine Fork of Jacks Creek, on National Forest land (fee ownership; private lease; mineral rights only). Discovered in 1870. Owned by Mr Garrett Ray, North Carolina (1975). Operated by The International Minerals and Chemical Corporation (Inc.), P.O. Box 71, Carlsbad, New Mexico 88220. MRDS database stated accuracy for this location is 100 meters. Production years were pre-1941 to 1973. Mined for chromite in 1917-1918. Latter production (circa 1973) was a quarry operation for olivine.
Mineralization is hosted in Neoproterozoic gneiss. The ore body is 61 meters thick with a depth-to-top of 2 meters, at a width of 305 meters, length of 805 meters and an area of 61 HA. The shape of ore body No. 1 is massive and No. 2 is irregular. The chromite occurs in vein-like segregations in olivine. The primary mode of origin was magmatic differentiation. Primary ore control was igneous activity and the secondary control was lithology. Wallrock alteration is slight (unspecified). The peridotite consists of partly altered and relatively unaltered dunite and saxonite. Unaltered material occurs in a lens-shaped zone near the center. The dunite is composed of fine-grained olivine and small crystlas of chromite. The degree of serpentinization is small. The saxonite is composed of fine-grained olivine, bronzite crystals and chromite. Some of the bronzite has been altered to talc. Chloritization is evident near larger joints and faults. Chromite occurs in dunite at the extreme SW and NE ends. Most recently a quarry was developed in the west-central part of the peridotite to exploit olivine. Local alteration includes serpentinization. Local rocks include meta-ultramafic rock and/or migmatitic biotite-hornblende gneisses.
Workings include surface openings. The southern end was prospected by pits. The northern end was prospected by a 100 foot shaft. A quarry was developed in the west-central part of the deposit.
Production data are found in: Hunter, C.E. (1941).
This property has been a minor producer.
The chromite analysis gave 44.20% Cr2O3, 20.05% Fe203, 0.30% Si02, 21.30% Al203, 14.48% MgO; Cr:Fe is 2.1:1. Fe content is 14.04%, calculated from Fe2O3.
No reserve estimate could be made due to the irregular occurrence extent of the chromite veins.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
7 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Anthophyllite Formula: ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| ⓘ 'Asbestos' |
| ⓘ 'Chlorite Group' Description: Occurs near larger joints and faults. |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ Enstatite Formula: Mg2Si2O6 |
| ⓘ Enstatite var. Bronzite Formula: (Mg,Fe2+)2[SiO3]2 |
| ⓘ 'Fayalite-Forsterite Series' |
| ⓘ 'Garnierite' |
| ⓘ Magnesioferrite Formula: MgFe3+2O4 |
| ⓘ 'Pimelite' Formula: Ni3Si4O10(OH)2 · 4H2O |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
| ⓘ Talc Formula: Mg3Si4O10(OH)2 |
| ⓘ Tremolite Formula: ◻Ca2Mg5(Si8O22)(OH)2 |
| ⓘ Vermiculite Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O Description: The Vermiculite of the Day Book Dunite formation is type of Hydrophlogopite. Kulp,J.L and Brobst,D.A (1954) Notes on the dunite and the geochemistry of Vermiculite at the Day Book dunite deposit,Yancey County, North Carolina:Economic Geology,Vol.49 pp.211-220.The vermiculite from the Day Book dunite formation is a type of Hydrophlogopite. Kulp.J.L and Brobst,D.A (1954)Notes on the Dunite and the geochemistry of Vermiculite at the Day Book dunite deposit,Yancey County,North Carolina:Economic Geology,Vol.49,pp.211-220. References: |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Magnesioferrite | 4.BB.05 | MgFe3+2O4 |
| Group 9 - Silicates | |||
| ⓘ | Enstatite | 9.DA.05 | Mg2Si2O6 |
| ⓘ | var. Bronzite | 9.DA.05 | (Mg,Fe2+)2[SiO3]2 |
| ⓘ | Anthophyllite | 9.DD.05 | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| ⓘ | Tremolite | 9.DE.10 | ◻Ca2Mg5(Si8O22)(OH)2 |
| ⓘ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
| ⓘ | 'Pimelite' | 9.EC.22 | Ni3Si4O10(OH)2 · 4H2O |
| ⓘ | Vermiculite | 9.EC.50 | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| Unclassified | |||
| ⓘ | 'Asbestos' | - | |
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Garnierite' | - | |
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| H | ⓘ Talc | Mg3Si4O10(OH)2 |
| H | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| H | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| H | ⓘ Pimelite | Ni3Si4O10(OH)2 · 4H2O |
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | Oxygen | |
| O | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Enstatite | Mg2Si2O6 |
| O | ⓘ Magnesioferrite | MgFe23+O4 |
| O | ⓘ Talc | Mg3Si4O10(OH)2 |
| O | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| O | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| O | ⓘ Enstatite var. Bronzite | (Mg,Fe2+)2[SiO3]2 |
| O | ⓘ Pimelite | Ni3Si4O10(OH)2 · 4H2O |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Mg | Magnesium | |
| Mg | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| Mg | ⓘ Enstatite | Mg2Si2O6 |
| Mg | ⓘ Magnesioferrite | MgFe23+O4 |
| Mg | ⓘ Talc | Mg3Si4O10(OH)2 |
| Mg | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Mg | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| Mg | ⓘ Enstatite var. Bronzite | (Mg,Fe2+)2[SiO3]2 |
| Al | Aluminium | |
| Al | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| Si | Silicon | |
| Si | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| Si | ⓘ Enstatite | Mg2Si2O6 |
| Si | ⓘ Talc | Mg3Si4O10(OH)2 |
| Si | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Si | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| Si | ⓘ Enstatite var. Bronzite | (Mg,Fe2+)2[SiO3]2 |
| Si | ⓘ Pimelite | Ni3Si4O10(OH)2 · 4H2O |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Ca | Calcium | |
| Ca | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Magnesioferrite | MgFe23+O4 |
| Fe | ⓘ Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| Fe | ⓘ Enstatite var. Bronzite | (Mg,Fe2+)2[SiO3]2 |
| Ni | Nickel | |
| Ni | ⓘ Pimelite | Ni3Si4O10(OH)2 · 4H2O |
Other Databases
| Link to USGS MRDS: | 10025782 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
USA
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0371990002
Hunter, Charles E., Murdock, Thomas G., MacCarthy, Gerald R. (1942) Chromite Deposits of North Carolina. Bulletin 42. North Carolina Division of Mineral Resources pages 8, 9 & plate 3
(1968) Mineral resources of the Appalachian region. Professional Paper 580. US Geological Survey doi:10.3133/pp580 pp.326-327
