Kingsmountite
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About Kingsmountite

Fresh pegmatite exposure, 1968
Foote Lithium Co. Mine, Kings Mountain District, Cleveland Co., North Carolina, USA
Foote Lithium Co. Mine, Kings Mountain District, Cleveland Co., North Carolina, USA
Formula:
Ca4(Fe2+,Mn2+)Al4(PO4)6(OH)4 · 12H2O
Colour:
Colorless to white, may have a light tan to pale brown tinge
Lustre:
Sub-Vitreous
Hardness:
2½
Specific Gravity:
2.51
Crystal System:
Monoclinic
Member of:
Name:
Named in 1979 by Pete J. Dunn, Donald R. Peacor, John S. White, and Robert A. Ramik after the type locality - Kings Mountain, Cleveland County, North Carolina, USA.
Type Locality:
Isostructural with:
Fe(II) analogue of Montgomeryite. Also ferrous iron analogue of fanfaniite. Chemically but not structurally a Ca4 "analogue" of aniyunwiyaite.
Classification of Kingsmountite
Approved
7/D.31-20
8.DH.25
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
H : With large and medium-sized cations, (OH, etc.):RO4 < 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
H : With large and medium-sized cations, (OH, etc.):RO4 < 1:1
42.11.8.2
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
19.14.22
19 : Phosphates
14 : Phosphates of Fe and other metals
19 : Phosphates
14 : Phosphates of Fe and other metals
Physical Properties of Kingsmountite
Sub-Vitreous
Transparency:
Transparent, Translucent
Colour:
Colorless to white, may have a light tan to pale brown tinge
Streak:
White
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Density:
2.51 g/cm3 (Measured) 2.58 g/cm3 (Calculated)
Optical Data of Kingsmountite
Type:
Biaxial (-)
RI values:
nα = 1.573 nβ = 1.581 nγ = 1.583
2V:
Measured: 62° , Calculated: 58°
Birefringence:
0.010
Max Birefringence:
δ = 0.010

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
very weak
Optical Extinction:
Z^ length = 35°
Pleochroism:
Non-pleochroic
Chemical Properties of Kingsmountite
Formula:
Ca4(Fe2+,Mn2+)Al4(PO4)6(OH)4 · 12H2O
IMA Formula:
Ca4Fe2+Al4(PO4)6(OH)4 · 12H2O
Crystallography of Kingsmountite
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
B2
Setting:
C2
Cell Parameters:
a = 10.029 Å, b = 24.461 Å, c = 6.258 Å
β = 91.16°
β = 91.16°
Ratio:
a:b:c = 0.41 : 1 : 0.256
Unit Cell V:
1,534.89 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Bladed crystals with pinacoidal forms dominant
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
12.23 | (50) |
6.33 | (30) |
5.15 | (100) |
3.31 | (30) |
2.950 | (40) |
2.915 | (30) |
2.624 | (60) |
Type Occurrence of Kingsmountite
Geological Setting of Type Material:
Phosphate mineralized fractures in granite pegmatite
Associated Minerals at Type Locality:
Synonyms of Kingsmountite
Other Language Names for Kingsmountite
German:Kingsmountit
Spanish:Kingsmountita
Relationship of Kingsmountite to other Species
Member of:
Other Members of this group:
Calcioferrite | Ca2Fe3+2(PO4)3(OH) · 7H2O | Mon. 2/m : B2/b |
Fanfaniite | Ca4MnAl4(PO4)6(OH)4·12H2O | Mon. 2/m : B2/b |
Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O | Mon. 2 : B2 |
Zodacite | Ca4Mn2+Fe3+4(PO4)6(OH)4 · 12H2O | Mon. |
Common Associates
Associated Minerals Based on Photo Data:
Birnessite | 4 photos of Kingsmountite associated with Birnessite on mindat.org. |
Phosphophyllite | 3 photos of Kingsmountite associated with Phosphophyllite on mindat.org. |
Keckite | 3 photos of Kingsmountite associated with Keckite on mindat.org. |
Scholzite | 3 photos of Kingsmountite associated with Scholzite on mindat.org. |
Mitridatite | 3 photos of Kingsmountite associated with Mitridatite on mindat.org. |
Beryl | 2 photos of Kingsmountite associated with Beryl on mindat.org. |
Parascholzite | 1 photo of Kingsmountite associated with Parascholzite on mindat.org. |
Mangangordonite | 1 photo of Kingsmountite associated with Mangangordonite on mindat.org. |
Roscherite | 1 photo of Kingsmountite associated with Roscherite on mindat.org. |
Englishite | 1 photo of Kingsmountite associated with Englishite on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
8.DH.05 | Minyulite | KAl2(PO4)2(OH,F) · 4H2O | Orth. mm2 : Pba2 |
8.DH.10 | Leucophosphite | KFe3+2(PO4)2(OH) · 2H2O | Mon. 2/m : P21/b |
8.DH.10 | Spheniscidite | (NH4,K)(Fe3+,Al)2(PO4)2(OH) · 2H2O | Mon. |
8.DH.10 | Tinsleyite | KAl2(PO4)2(OH) · 2H2O | Mon. |
8.DH.15 | Jahnsite-(CaMnFe) | {Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O | Mon. 2/m : P2/b |
8.DH.15 | Jahnsite-(CaMnMg) | {Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O | Mon. 2/m : P2/b |
8.DH.15 | Jahnsite-(CaMnMn) | {Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O | Mon. 2/m : P2/b |
8.DH.15 | Keckite | CaMn2+(Fe3+Mn2+)Fe3+2(PO4)4(OH)3 · 7H2O | Mon. 2/m : P2/b |
8.DH.15 | Rittmannite | {(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2 · 8H2O | Mon. |
8.DH.15 | Whiteite-(CaFeMg) | {Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O | Mon. 2/m : P21/b |
8.DH.15 | Whiteite-(CaMnMg) | {Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O | Mon. 2/m |
8.DH.15 | Whiteite-(MnFeMg) | {(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O | Mon. 2/m : P21/b |
8.DH.15 | Jahnsite-(MnMnMn) | {Mn2+}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O | Mon. |
8.DH.15 | Kaluginite | (Mn2+,Ca)MgFe3+(PO4)2(OH) · 4H2O | Orth. |
8.DH.15 | Jahnsite-(CaFeFe) | {Ca}{Fe2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O | Mon. |
8.DH.15 | Jahnsite-(NaFeMg) | NaFe3+Mg2Fe3+2(PO4)4(OH)2 · 8H2O | Mon. 2/m : P2/b |
8.DH.15 | Jahnsite-(NaMnMg) | {(Na,Ca)}{(Mn2+,Fe3+)}{(Mg,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O | Mon. 2/m : P2/b |
8.DH.15 | Jahnsite-(CaMgMg) | {Ca}{Mg}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2O | |
8.DH.20 | Manganosegelerite | (Mn2+,Ca)(Mn2+,Fe2+,Mg)Fe3+(PO4)2(OH) · 4H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
8.DH.20 | Overite | CaMgAl(PO4)2(OH) · 4H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
8.DH.20 | Segelerite | Ca2 Mg2 Fe3+2(PO4)4(OH)2 · 8H2O | Orth. mmm (2/m 2/m 2/m) : Pcca |
8.DH.20 | Wilhelmvierlingite | CaMnFe3+(PO4)2(OH) · 2H2O | Orth. |
8.DH.20 | Juonniite | CaMgSc(PO4)2(OH) · 4H2O | Orth. |
8.DH.25 | Calcioferrite | Ca2Fe3+2(PO4)3(OH) · 7H2O | Mon. 2/m : B2/b |
8.DH.25 | Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O | Mon. 2 : B2 |
8.DH.25 | Zodacite | Ca4Mn2+Fe3+4(PO4)6(OH)4 · 12H2O | Mon. |
8.DH.30 | Arseniosiderite | Ca2Fe3+3(AsO4)3O2 · 3H2O | Mon. 2/m : B2/b |
8.DH.30 | Kolfanite | Ca2Fe3+3O2(AsO4)3 · 2H2O | Mon. |
8.DH.30 | Mitridatite | Ca2Fe3+3(PO4)3O2 · 3H2O | Mon. 2/m : B2/b |
8.DH.30 | Pararobertsite | Ca2Mn3+3(PO4)3O2 · 3H2O | Mon. 2/m : P21/b |
8.DH.30 | Robertsite | Ca2Mn3+3(PO4)3O2 · 3H2O | Mon. m : Bb |
8.DH.30 | Sailaufite | (Ca,Na,☐)2Mn3+3(AsO4)2(CO3)O2 · 3H2O | Mon. |
8.DH.35 | Mantienneite | KMg2Al2Ti(PO4)4(OH)3 · 15H2O | Orth. |
8.DH.35 | Paulkerrite | K(Mg,Mn2+)2(Fe3+,Al,Ti,Mg)2Ti(PO4)4(OH)3 · 15H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
8.DH.35 | Benyacarite | (H2O,K)2(Mn2+,Fe2+)2(Fe3+,Ti)2Ti(PO4)4(O,F)2 · 14H2O | Orth. mmm (2/m 2/m 2/m) : Pbca |
8.DH.40 | Xanthoxenite | Ca4Fe3+2(PO4)4(OH)2 · 3H2O | Tric. 1 : P1 |
8.DH.45 | Mahnertite | NaCu3(AsO4)2Cl · 5H2O | Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm |
8.DH.50 | Andyrobertsite | KCdCu5(AsO4)4(H2AsO4) · 2H2O | Mon. |
8.DH.50 | Calcioandyrobertsite | KCaCu5(AsO4)4(H2AsO4) · 2H2O | Mon. 2/m : P21/m |
8.DH.55 | Englishite | K3Na2Ca10Al15(PO4)21(OH)7 · 26H2O | Mon. 2/m |
8.DH.60 | Bouazzerite | Bi6(Mg,Co)11Fe3+14(AsO4)18(OH)4O12 · 86H2O | Mon. 2/m |
Related Minerals - Dana Grouping (8th Ed.)
42.11.8.1 | Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O | Mon. 2 : B2 |
42.11.8.3 | Calcioferrite | Ca2Fe3+2(PO4)3(OH) · 7H2O | Mon. 2/m : B2/b |
42.11.8.4 | Zodacite | Ca4Mn2+Fe3+4(PO4)6(OH)4 · 12H2O | Mon. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
19.14.1 | Cyrilovite | NaFe3+3(PO4)2(OH)4 · 2H2O | Tet. 4 2 2 : P41 21 2 |
19.14.2 | Kidwellite | NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33 | Mon. 2/m : P2/b |
19.14.3 | Rosemaryite | (Na,Ca,Mn)(Mn,Fe2+)(Fe3+,Mg)Al(PO4)3 | Mon. 2/m : P21/b |
19.14.4 | Wyllieite | (Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3 | Mon. 2/m |
19.14.5 | Ferrowyllieite | (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 | Mon. 2/m : P21/b |
19.14.6 | Natrodufrénite | NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O | Mon. |
19.14.7 | Leucophosphite | KFe3+2(PO4)2(OH) · 2H2O | Mon. 2/m : P21/b |
19.14.8 | Spheniscidite | (NH4,K)(Fe3+,Al)2(PO4)2(OH) · 2H2O | Mon. |
19.14.9 | Burangaite | NaFe2+Al5(PO4)4(OH)6 · 2H2O | Mon. 2/m : B2/b |
19.14.10 | Satterlyite | (Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6 | Trig. 3m (3 2/m) : P3 1m |
19.14.11 | Ushkovite | MgFe3+2(PO4)2(OH)2 · 8H2O | Tric. |
19.14.12 | Garyansellite | (Mg,Fe)3(PO4)2(OH,O) · 1.5H2O | Orth. mmm (2/m 2/m 2/m) |
19.14.13 | Thadeuite | Ca(Mg,Fe2+)3(PO4)2(OH,F)2 | Orth. 2 2 2 : C2 2 21 |
19.14.14 | Anapaite | Ca2Fe2+(PO4)2 · 4H2O | Tric. 1 : P1 |
19.14.15 | Xanthoxenite | Ca4Fe3+2(PO4)4(OH)2 · 3H2O | Tric. 1 : P1 |
19.14.16 | Calcioferrite | Ca2Fe3+2(PO4)3(OH) · 7H2O | Mon. 2/m : B2/b |
19.14.17 | Mitridatite | Ca2Fe3+3(PO4)3O2 · 3H2O | Mon. 2/m : B2/b |
19.14.18 | Mélonjosephite | CaFe2+Fe3+(PO4)2(OH) | |
19.14.19 | Delvauxite | CaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed · | Amor. |
19.14.20 | Collinsite | Ca2Mg(PO4)2 · 2H2O | Tric. 1 : P1 |
19.14.21 | Segelerite | Ca2 Mg2 Fe3+2(PO4)4(OH)2 · 8H2O | Orth. mmm (2/m 2/m 2/m) : Pcca |
19.14.23 | Vauxite | Fe2+Al2(PO4)2(OH)2 · 6H2O | Tric. 1 : P1 |
19.14.24 | Metavauxite | Fe2+Al2(PO4)2(OH)2 · 8H2O | Mon. 2/m : P21/b |
19.14.25 | Paravauxite | Fe2+Al2(PO4)2(OH)2 · 8H2O | Tric. 1 : P1 |
19.14.26 | Sigloite | Fe3+Al2(PO4)2(OH)3 · 7H2O | Tric. |
19.14.27 | Cacoxenite | Fe3+24AlO6(PO4)17(OH)12 · 75H2O | Hex. 6/m : P63/m |
19.14.28 | Koninckite | Fe3+PO4 · 3H2O | Tet. |
19.14.29 | Lazulite | MgAl2(PO4)2(OH)2 | Mon. 2/m : P21/b |
19.14.30 | Scorzalite | Fe2+Al2(PO4)2(OH)2 | Mon. 2/m : P21/b |
19.14.31 | Souzalite | (Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O | Tric. |
19.14.32 | Gormanite | (Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O | Tric. |
19.14.33 | Zaïrite | BiFe3+3(PO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
Fluorescence of Kingsmountite
Not fluorescent in UV
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Kingsmountite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1981): 66: 1275-1276.
Dunn, P.J., W.L. Roberts, T.J. Campbell, and P.B. Leavens (1983) Red montgomeryite and associated minerals from the Tip Top pegmatite with notes on kingsmountite and calcioferrite. Mineralogical Record, 14, 195-197.
Internet Links for Kingsmountite
mindat.org URL:
https://www.mindat.org/min-2211.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Specimens:
The following Kingsmountite specimens are currently listed for sale on minfind.com.
Localities for Kingsmountite
Locality List




All localities listed without proper references should be considered as questionable.
Australia | |
| Podgson RE, Osborne RAL, Colchester DM, Minerals of Jenolan Caves, New South Wales, Australia: Geological and Biological Interactions, Proceedings of the Linnean Society of New South Wales 134, 1-18. |
Germany | |
| Collection Elmar Lackner |
| http://www.berthold-weber.de/h_miner.htm; Grey, I. E., Macrae, C. M., Keck, E., & Birch, W. D. (2012). Aluminium-bearing strunzite derived from jahnsite at the Hagendorf-Süd pegmatite, Germany. Mineralogical Magazine, 76(5), 1165-1174. |
Wittern: "Mineralfundorte in Deutschland", 2001; Dill, H. G., Weber, B., Gerdes, A., & Melcher, F. (2008). The Fe-Mn phosphate apliteSilbergrube'near Waidhaus, Germany: epithermal phosphate mineralization in the Hagendorf-Pleystein pegmatite province. Mineralogical Magazine, 72(5), 1119-1144. | |
| A. Wittern: Mineralfundorte in Deutschland, Schweizerbart (Stuttgart), 2001 |
Mexico | |
| Forti, P. et al. (2006): ACTA CARSOLOGICA 35/1, 79–98. |
Portugal | |
| Schnorrer-Köhler (1991), Mineral Occurrences. |
| Vignola, P., Rizzi, A., Varvello, S. (2018) La kingsmountite di Regada, Mangualde, Portogallo. Micro, 16, 2-2018, 96-99. |
Russia | |
| Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 121(2): 95-103(1992); Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow |
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow | |
USA | |
| NBMG Spec. Pub. 31 Minerals of Nevada |
| Canadian Mineralogist (1979): 17: 579-582.; Rocks and Minerals, (1985) 60:76-82; Carolina Geological Society Field Trip Guidebook 1981, 39-48 |
| Rocks & Minerals: 75(3): 156-169. |
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Hagendorf South Pegmatite, Hagendorf, Waidhaus, Upper Palatinate, Bavaria, Germany