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Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USAi
Regional Level Types
Bald Knob depositDeposit
Bald KnobMountain
SpartaTown
Alleghany CountyCounty
North CarolinaState
USACountry

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PhotosMapsSearchMineralogy
02913150017867194067018.jpg
Kellyite

Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA
06636800017272014723456.jpg
Kellyite, etc.

Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA
09260090017272014741615.jpg
Alleghanyite, etc.

Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA
00021640017635468349936.jpg
Kellyite

Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA
06636800017272014723456.jpg
Kellyite, etc.

Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA
09260090017272014741615.jpg
Alleghanyite, etc.

Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA
00021640017635468349936.jpg
Kellyite

Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA
07672730017272014866691.jpg
Kellyite, etc.

Bald Knob deposit, Bald Knob, Sparta, Alleghany County, North Carolina, USA
Latitude & Longitude (WGS84):
36° 32' 59'' North , 81° 5' 44'' West
Latitude & Longitude (decimal):
36.55000,-81.09583
GRN:
N25W47
Type:
Deposit
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Sparta1,726 (2017)5.4km
Independence927 (2017)9.5km
Galax6,914 (2017)19.7km
Lowgap324 (2017)20.6km
Fries469 (2017)21.2km
Mindat Locality ID:
4036
Long-form identifier:
mindat:1:2:4036:8
GUID (UUID V4):
0
Other/historical names associated with this locality:
Primary ore body; Crouse Knob deposit


A manganese mine located 2.5 miles (ca. 4 km) East of Sparta.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


43 valid minerals. 3 (TL) - type locality of valid minerals.

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ Alabandite
Formula: MnS
ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Albite var. Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
ⓘ Albite var. Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
ⓘ Alleghanyite (TL)
Formula: Mn2+5(SiO4)2(OH)2
Type Locality:
Habit: rounded grains
Colour: brownish pink
Description: Alleghanyite and Mn-rich calcite occur in alternating lenses in a carbonate paragenesis. These lenses may not be more than one millimeter wide, but can be up to 15 mm wide. The individual rounded alleghanyite grains are up to 5 mm in diameter.
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Anthophyllite
Formula: ◻Mg2Mg5(Si8O22)(OH)2
ⓘ 'Apatite'
Formula: Ca5(PO4)3A
ⓘ Bannisterite ?
Formula: (Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
ⓘ Bementite
Formula: Mn7Si6O15(OH)8
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
ⓘ Calcite var. Manganese-bearing Calcite
Formula: (Ca,Mn)CO3
ⓘ Caryopilite
Formula: Mn2+3Si2O5(OH)4
ⓘ Cattierite
Formula: CoS2
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Clino-ferro-suenoite
Formula: ◻Mn2+2(Fe2+5)(Si8O22)(OH)2
ⓘ Clino-suenoite
Formula: ◻Mn2+2(Mg5)(Si8O22)(OH)2
Description: Can be a synonym in some older references as Tirodite.
ⓘ Cobaltite
Formula: CoAsS
ⓘ Cummingtonite
Formula: ◻Mg2Mg5(Si8O22)(OH)2
ⓘ Fluorapatite
Formula: Ca5(PO4)3F
ⓘ Galaxite (TL)
Formula: Mn2+Al2O4
Type Locality:
Description: Galaxite and Jacobsite can be as intergrowths or as sepearate grains.
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Grunerite
Formula: ◻Fe2+2Fe2+5(Si8O22)(OH)2
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ Jacobsite
Formula: Mn2+Fe3+2O4
ⓘ Kellyite (TL)
Formula: Mn2+2Al(AlSiO5)(OH)4
Type Locality:
ⓘ Kutnohorite
Formula: CaMn2+(CO3)2
ⓘ Linnaeite
Formula: Co2+Co3+2S4
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Manganhumite
Formula: Mn2+7(SiO4)3(OH)2
ⓘ Margarite
Formula: CaAl2(Al2Si2O10)(OH)2
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Neotocite
Formula: (Mn,Fe)SiO3 · H2O (?)
ⓘ Pennantite
Formula: Mn2+5Al(AlSi3O10)(OH)8
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrolusite
Formula: Mn4+O2
ⓘ Pyrophanite
Formula: Mn2+TiO3
ⓘ Pyroxmangite
Formula: Mn2+SiO3
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Rhodochrosite
Formula: MnCO3
ⓘ Rhodonite
Formula: CaMn3Mn[Si5O15]
ⓘ Sonolite
Formula: Mn2+9(SiO4)4(OH)2
ⓘ Spessartine
Formula: Mn2+3Al2(SiO4)3
ⓘ Stilpnomelane
Formula: K4Fe2+48[Si64Al8]O164(OH)52 · nH2O
ⓘ Stilpnomelane var. Manganese-bearing Stilpnomelane
Formula: K(Fe2+,Mn,Mg,Fe3+)8(Si,Al)12(O,OH)27
ⓘ Tephroite
Formula: Mn2+2(SiO4)
ⓘ Trimerite ?
Formula: CaMn2+2Be3(SiO4)3

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘAlabandite2.CD.10MnS
ⓘLinnaeite2.DA.05Co2+Co3+2S4
ⓘCattierite2.EB.05aCoS2
ⓘPyrite2.EB.05aFeS2
ⓘCobaltite2.EB.25CoAsS
Group 4 - Oxides and Hydroxides
ⓘGalaxite (TL)4.BB.05Mn2+Al2O4
ⓘJacobsite4.BB.05Mn2+Fe3+2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘPyrophanite4.CB.05Mn2+TiO3
ⓘQuartz4.DA.05SiO2
ⓘPyrolusite4.DB.05Mn4+O2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘvar. Manganese-bearing Calcite5.AB.05(Ca,Mn)CO3
ⓘRhodochrosite5.AB.05MnCO3
ⓘKutnohorite5.AB.10CaMn2+(CO3)2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘFluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
ⓘTrimerite ?9.AB.05CaMn2+2Be3(SiO4)3
ⓘTephroite9.AC.05Mn2+2(SiO4)
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘSpessartine9.AD.25Mn2+3Al2(SiO4)3
ⓘAlleghanyite (TL)9.AF.45Mn2+5(SiO4)2(OH)2
ⓘManganhumite9.AF.50Mn2+7(SiO4)3(OH)2
ⓘSonolite9.AF.55Mn2+9(SiO4)4(OH)2
ⓘAnthophyllite9.DD.05◻Mg2Mg5(Si8O22)(OH)2
ⓘClino-suenoite9.DE.◻Mn2+2(Mg5)(Si8O22)(OH)2
ⓘCummingtonite9.DE.05◻Mg2Mg5(Si8O22)(OH)2
ⓘGrunerite9.DE.05◻Fe2+2Fe2+5(Si8O22)(OH)2
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘClino-ferro-suenoite9.DE.10◻Mn2+2(Fe2+5)(Si8O22)(OH)2
ⓘRhodonite9.DK.05CaMn3Mn[Si5O15]
ⓘPyroxmangite9.DO.05Mn2+SiO3
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘMargarite9.EC.30CaAl2(Al2Si2O10)(OH)2
ⓘPennantite9.EC.55Mn2+5Al(AlSi3O10)(OH)8
ⓘCaryopilite9.ED.15Mn2+3Si2O5(OH)4
ⓘKellyite (TL)9.ED.15Mn2+2Al(AlSiO5)(OH)4
ⓘNeotocite9.ED.20(Mn,Fe)SiO3 · H2O (?)
ⓘBementite9.EE.05Mn7Si6O15(OH)8
ⓘStilpnomelane9.EG.40K4Fe2+48[Si64Al8]O164(OH)52 · nH2O
ⓘvar. Manganese-bearing Stilpnomelane9.EG.40K(Fe2+,Mn,Mg,Fe3+)8(Si,Al)12(O,OH)27
ⓘBannisterite ?9.EG.75(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar. Andesine9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
ⓘvar. Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Apatite'-Ca5(PO4)3A

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ AlleghanyiteMn52+(SiO4)2(OH)2
Hⓘ Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
Hⓘ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
Hⓘ BementiteMn7Si6O15(OH)8
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ CaryopiliteMn32+Si2O5(OH)4
Hⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Hⓘ Grunerite◻Fe22+Fe52+(Si8O22)(OH)2
Hⓘ KellyiteMn22+Al(AlSiO5)(OH)4
Hⓘ ManganhumiteMn72+(SiO4)3(OH)2
Hⓘ MargariteCaAl2(Al2Si2O10)(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Hⓘ PennantiteMn52+Al(AlSi3O10)(OH)8
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ SonoliteMn92+(SiO4)4(OH)2
Hⓘ StilpnomelaneK4Fe482+[Si64Al8]O164(OH)52 · nH2O
Hⓘ Stilpnomelane var. Manganese-bearing StilpnomelaneK(Fe2+,Mn,Mg,Fe3+)8(Si,Al)12(O,OH)27
Hⓘ Clino-suenoite◻Mn22+(Mg5)(Si8O22)(OH)2
Hⓘ Clino-ferro-suenoite◻Mn22+(Fe52+)(Si8O22)(OH)2
BeBeryllium
Beⓘ TrimeriteCaMn22+Be3(SiO4)3
CCarbon
Cⓘ CalciteCaCO3
Cⓘ KutnohoriteCaMn2+(CO3)2
Cⓘ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
Cⓘ RhodochrositeMnCO3
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AlleghanyiteMn52+(SiO4)2(OH)2
Oⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
Oⓘ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
Oⓘ BementiteMn7Si6O15(OH)8
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ CaryopiliteMn32+Si2O5(OH)4
Oⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Oⓘ FluorapatiteCa5(PO4)3F
Oⓘ GalaxiteMn2+Al2O4
Oⓘ Grunerite◻Fe22+Fe52+(Si8O22)(OH)2
Oⓘ JacobsiteMn2+Fe23+O4
Oⓘ KellyiteMn22+Al(AlSiO5)(OH)4
Oⓘ KutnohoriteCaMn2+(CO3)2
Oⓘ ManganhumiteMn72+(SiO4)3(OH)2
Oⓘ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MargariteCaAl2(Al2Si2O10)(OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Oⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ PennantiteMn52+Al(AlSi3O10)(OH)8
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ PyrolusiteMn4+O2
Oⓘ PyrophaniteMn2+TiO3
Oⓘ PyroxmangiteMn2+SiO3
Oⓘ QuartzSiO2
Oⓘ RhodochrositeMnCO3
Oⓘ RhodoniteCaMn3Mn[Si5O15]
Oⓘ SonoliteMn92+(SiO4)4(OH)2
Oⓘ SpessartineMn32+Al2(SiO4)3
Oⓘ StilpnomelaneK4Fe482+[Si64Al8]O164(OH)52 · nH2O
Oⓘ TephroiteMn22+(SiO4)
Oⓘ TrimeriteCaMn22+Be3(SiO4)3
Oⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Stilpnomelane var. Manganese-bearing StilpnomelaneK(Fe2+,Mn,Mg,Fe3+)8(Si,Al)12(O,OH)27
Oⓘ ApatiteCa5(PO4)3A
Oⓘ Clino-suenoite◻Mn22+(Mg5)(Si8O22)(OH)2
Oⓘ Clino-ferro-suenoite◻Mn22+(Fe52+)(Si8O22)(OH)2
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ FluorapatiteCa5(PO4)3F
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Naⓘ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
Naⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ Stilpnomelane var. Manganese-bearing StilpnomelaneK(Fe2+,Mn,Mg,Fe3+)8(Si,Al)12(O,OH)27
Mgⓘ Clino-suenoite◻Mn22+(Mg5)(Si8O22)(OH)2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ GalaxiteMn2+Al2O4
Alⓘ KellyiteMn22+Al(AlSiO5)(OH)4
Alⓘ MargariteCaAl2(Al2Si2O10)(OH)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ PennantiteMn52+Al(AlSi3O10)(OH)8
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ SpessartineMn32+Al2(SiO4)3
Alⓘ StilpnomelaneK4Fe482+[Si64Al8]O164(OH)52 · nH2O
Alⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Alⓘ Stilpnomelane var. Manganese-bearing StilpnomelaneK(Fe2+,Mn,Mg,Fe3+)8(Si,Al)12(O,OH)27
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ AlleghanyiteMn52+(SiO4)2(OH)2
Siⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
Siⓘ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
Siⓘ BementiteMn7Si6O15(OH)8
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ CaryopiliteMn32+Si2O5(OH)4
Siⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Siⓘ Grunerite◻Fe22+Fe52+(Si8O22)(OH)2
Siⓘ KellyiteMn22+Al(AlSiO5)(OH)4
Siⓘ ManganhumiteMn72+(SiO4)3(OH)2
Siⓘ MargariteCaAl2(Al2Si2O10)(OH)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Siⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ PennantiteMn52+Al(AlSi3O10)(OH)8
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ PyroxmangiteMn2+SiO3
Siⓘ QuartzSiO2
Siⓘ RhodoniteCaMn3Mn[Si5O15]
Siⓘ SonoliteMn92+(SiO4)4(OH)2
Siⓘ SpessartineMn32+Al2(SiO4)3
Siⓘ StilpnomelaneK4Fe482+[Si64Al8]O164(OH)52 · nH2O
Siⓘ TephroiteMn22+(SiO4)
Siⓘ TrimeriteCaMn22+Be3(SiO4)3
Siⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ Stilpnomelane var. Manganese-bearing StilpnomelaneK(Fe2+,Mn,Mg,Fe3+)8(Si,Al)12(O,OH)27
Siⓘ Clino-suenoite◻Mn22+(Mg5)(Si8O22)(OH)2
Siⓘ Clino-ferro-suenoite◻Mn22+(Fe52+)(Si8O22)(OH)2
PPhosphorus
Pⓘ FluorapatiteCa5(PO4)3F
Pⓘ ApatiteCa5(PO4)3A
SSulfur
Sⓘ AlabanditeMnS
Sⓘ CattieriteCoS2
Sⓘ ChalcopyriteCuFeS2
Sⓘ CobaltiteCoAsS
Sⓘ LinnaeiteCo2+Co23+S4
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
KPotassium
Kⓘ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Kⓘ StilpnomelaneK4Fe482+[Si64Al8]O164(OH)52 · nH2O
Kⓘ Stilpnomelane var. Manganese-bearing StilpnomelaneK(Fe2+,Mn,Mg,Fe3+)8(Si,Al)12(O,OH)27
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
Caⓘ CalciteCaCO3
Caⓘ FluorapatiteCa5(PO4)3F
Caⓘ KutnohoriteCaMn2+(CO3)2
Caⓘ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
Caⓘ MargariteCaAl2(Al2Si2O10)(OH)2
Caⓘ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ RhodoniteCaMn3Mn[Si5O15]
Caⓘ TrimeriteCaMn22+Be3(SiO4)3
Caⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Caⓘ ApatiteCa5(PO4)3A
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ PyrophaniteMn2+TiO3
MnManganese
Mnⓘ AlabanditeMnS
Mnⓘ AlleghanyiteMn52+(SiO4)2(OH)2
Mnⓘ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
Mnⓘ BementiteMn7Si6O15(OH)8
Mnⓘ CaryopiliteMn32+Si2O5(OH)4
Mnⓘ GalaxiteMn2+Al2O4
Mnⓘ JacobsiteMn2+Fe23+O4
Mnⓘ KellyiteMn22+Al(AlSiO5)(OH)4
Mnⓘ KutnohoriteCaMn2+(CO3)2
Mnⓘ ManganhumiteMn72+(SiO4)3(OH)2
Mnⓘ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
Mnⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Mnⓘ PennantiteMn52+Al(AlSi3O10)(OH)8
Mnⓘ PyrolusiteMn4+O2
Mnⓘ PyrophaniteMn2+TiO3
Mnⓘ PyroxmangiteMn2+SiO3
Mnⓘ RhodochrositeMnCO3
Mnⓘ RhodoniteCaMn3Mn[Si5O15]
Mnⓘ SonoliteMn92+(SiO4)4(OH)2
Mnⓘ SpessartineMn32+Al2(SiO4)3
Mnⓘ TephroiteMn22+(SiO4)
Mnⓘ TrimeriteCaMn22+Be3(SiO4)3
Mnⓘ Stilpnomelane var. Manganese-bearing StilpnomelaneK(Fe2+,Mn,Mg,Fe3+)8(Si,Al)12(O,OH)27
Mnⓘ Clino-suenoite◻Mn22+(Mg5)(Si8O22)(OH)2
Mnⓘ Clino-ferro-suenoite◻Mn22+(Fe52+)(Si8O22)(OH)2
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ ChalcopyriteCuFeS2
Feⓘ Grunerite◻Fe22+Fe52+(Si8O22)(OH)2
Feⓘ JacobsiteMn2+Fe23+O4
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
Feⓘ StilpnomelaneK4Fe482+[Si64Al8]O164(OH)52 · nH2O
Feⓘ Stilpnomelane var. Manganese-bearing StilpnomelaneK(Fe2+,Mn,Mg,Fe3+)8(Si,Al)12(O,OH)27
Feⓘ Clino-ferro-suenoite◻Mn22+(Fe52+)(Si8O22)(OH)2
CoCobalt
Coⓘ CattieriteCoS2
Coⓘ CobaltiteCoAsS
Coⓘ LinnaeiteCo2+Co23+S4
CuCopper
Cuⓘ ChalcopyriteCuFeS2
AsArsenic
Asⓘ CobaltiteCoAsS

Other Databases

Link to USGS MRDS:10150753

Other Regions, Features and Areas containing this locality

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References

Ross, Clarence S., Kerr, Paul F. (1932) The manganese minerals of a vein near Bald Knob, North Carolina. American Mineralogist, 17 (1) 1-18
Rocks & Minerals (1946) 21: 357.
Brannock, Kent C. (1971) Minerals of the Spinel Group from Alleghany County, North Carolina. The Mineralogical Record, 2 (1) 43-44
Peacor, Donald R., Essene, Eric J., Simmons, William B., Bigelow, and Wilbur C. (1974) Kellyite, a new Mn-Al member of the serpentine group from Bald Knob, North Carolina, and new data on grovesite. American Mineralogist, 59 (11-12) 1153-1156
Simmons, William B., Peacor, Donald R., Essene, Eric J., Winter, Gary A. (1981) Manganese Minerals of Bald Knob, North Carolina. The Mineralogical Record, 12 (3) 167-171
Winter, Gary A., Essene, Eric J., Peacor, Donald R. (1981) Carbonates and pyroxenoids from the manganese deposit near Bald Knob, North Carolina. American Mineralogist, 66 (3-4) 278-289
Winter, G. A., Essene, E. J., Peacor, D. R. (1983) Mn-humites from Bald Knob, North Carolina: mineralogy and phase equilibria. American Mineralogist, 68 (9-10) 951-959
Simmons, William B. (1985) The Bald Knob Manganese Deposit. Rocks & Minerals, 60 (3) 130-135 doi:10.1080/00357529.1985.11764388
Flohr, Marta J. K. (1992) Geochemistry and origin of the Bald Knob manganese deposit, North Carolina. Economic Geology, 87 (8) 2023-2040 doi:10.2113/gsecongeo.87.8.2023
Bernard, Jan, Hyršl, Jaroslav (2004) Minerals and their Localities (1st ed.) Granit, Prague.
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