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Nantahala Talc and Limestone Mine, Hewitt, Swain Co., North Carolina, USAi
Regional Level Types
Nantahala Talc and Limestone MineMine
Hewitt- not defined -
Swain Co.County
North CarolinaState
USACountry

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Latitude & Longitude (WGS84): 35° 18' 38'' North , 83° 38' 44'' West
Latitude & Longitude (decimal): 35.31065,-83.64583
GeoHash:G#: dnk8bs4gq
Locality type:Mine
Köppen climate type:Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Robbinsville598 (2017)14.7km
Andrews1,752 (2017)20.2km
Bryson City1,458 (2017)22.3km
Franklin3,940 (2017)27.9km
Marble321 (2017)29.5km


A talc and limestone occurrence/mine located 5 miles SW of the Nantahala Outdoor Center on Highway 19 in the Nantahala Gorge. This location is obvious as it is at the only place where Highway 19 crosses the Nantahala River.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


10 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Aragonite
Formula: CaCO3
Reference: Michael Streeter.
Calcite
Formula: CaCO3
Reference: Michael Streeter ,2003, A Rockhounding Guide to North Carolinas Blue Ridge Mountains, pg # 94
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Smithsonian Institution Mineral Reference Collection No.18898-00 and 18898-A0
Dolomite
Formula: CaMg(CO3)2
Reference: Michael Streeter.
Goethite
Formula: α-Fe3+O(OH)
Reference: Michael Streeter.
Graphite
Formula: C
Reference: Michael Streeter.
Pyrite
Formula: FeS2
Reference: Michael Streeter,2003, A Rockhounding Guide to North Carolinas Blue Ridge Mountains, pg # 94
Quartz
Formula: SiO2
Reference: Michael Streeter,2003,A Rockhounding Guide to North Carolinas Blue Ridge Mountains, pg # 94
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Talc
Formula: Mg3Si4O10(OH)2
Reference: Michael Streeter, 2003, A Rockhounding Guide to North Carolinas Blue Ridge Mountains,pg # 94 , Smithsonian Institution Mineral Reference Collection No.18898-00 and 18898-A0
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: Michael Streeter,2003, A Rockhounding Guide to North Carolinas Blue Ridge Mountains, pg # 94 Smithsonian Institution Mineral Reference Collection No.118259-00

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
Talc9.EC.05Mg3Si4O10(OH)2
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Graphite1.3.6.2C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Talc71.2.1.3Mg3Si4O10(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Aragonite-CaCO3
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals for each chemical element

HHydrogen
H Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H TalcMg3Si4O10(OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
H Goethiteα-Fe3+O(OH)
H ClinochloreMg5Al(AlSi3O10)(OH)8
CCarbon
C CalciteCaCO3
C AragoniteCaCO3
C GraphiteC
C DolomiteCaMg(CO3)2
OOxygen
O Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O CalciteCaCO3
O TalcMg3Si4O10(OH)2
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O QuartzSiO2
O AragoniteCaCO3
O DolomiteCaMg(CO3)2
O Goethiteα-Fe3+O(OH)
O ClinochloreMg5Al(AlSi3O10)(OH)8
MgMagnesium
Mg Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg TalcMg3Si4O10(OH)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Mg DolomiteCaMg(CO3)2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
AlAluminium
Al Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Al ClinochloreMg5Al(AlSi3O10)(OH)8
SiSilicon
Si Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si TalcMg3Si4O10(OH)2
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si QuartzSiO2
Si ClinochloreMg5Al(AlSi3O10)(OH)8
SSulfur
S PyriteFeS2
CaCalcium
Ca CalciteCaCO3
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Ca AragoniteCaCO3
Ca DolomiteCaMg(CO3)2
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Fe PyriteFeS2
Fe Goethiteα-Fe3+O(OH)
NiNickel
Ni Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Neoproterozoic
541 - 1000 Ma



ID: 2844651
Murphy Marble, Andrews Formation, and Nottely Quartzite, undivided

Age: Neoproterozoic (541 - 1000 Ma)

Stratigraphic Name: Murphy Marble; Andrews Formation; Nottely Quartzite

Description: Murphy Marble: calcareous to dolomitic; Andrews Formation: calcareous cross-biotite schist; Nottely Quartzite: meta-orthoquartzite with slate.

Comments: Original map source: The North Carolina Dept. of Environment, Health, and Natural Resources, Division of Land Resources, NC Geological Survey, in cooperation with the NC Center for Geographic Information and Analysis, 1998 (updated 2007), Geology - North Carolina (1:250,000)

Lithology: Major:{marble,biotite schist}, Minor:{quartzite,slate}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Neoproterozoic
541 - 1000 Ma



ID: 3187374
Neoproterozoic sedimentary rocks

Age: Neoproterozoic (541 - 1000 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Streeter, Michael (2003), A Rockhounding Guide to North Carolina's Blue Ridge Mountains: 94.
Smithsonian Institution Mineral Reference Collection No.118259-00 (tremolite).


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