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Kingsmountite Mineral Data

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General Kingsmountite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Mn++)4(Fe++,Mn++)Al4(PO4)6(OH)4•12(H2O)
Help on Composition: Composition: Molecular Weight = 1,204.33 gm
   Calcium     10.65 %  Ca   14.90 % CaO
   Magnesium    0.20 %  Mg    0.33 % MgO
   Manganese    6.39 %  Mn    8.25 % MnO
   Aluminum     8.74 %  Al   16.51 % Al2O3
   Iron         3.71 %  Fe    3.58 % FeO /  1.33 % Fe2O3
   Phosphorus  15.43 %  P    35.36 % P2O5
   Hydrogen     2.28 %  H    20.34 % H2O
   Oxygen      52.61 %  O
              ______        ______ 
              100.00 %      100.60 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3.2Mn2+0.9Fe2+0.6Mn2+0.5Mg0.1Al3.9Fe3+0.2(PO4)6(OH)4�11.6(H2O)
Help on Environment: Environment: Secondary mineral from the oxidation of primary phosphates be descending oxidizing ground water in complex granite pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Foote Quarry, Kings Mountain, Cleveland County, North Carolina, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Kingsmountite + Pronunciation Say KINGSMOUNTITE

Kingsmountite Image

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Comments: White, radial spray of kingsmountite crystals.
Location: Kings Mountain, Cleveland County, North Carolina, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Kingsmountite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.41:1:0.2558
Help on Cell Dimensions: Cell Dimensions: a = 10.029, b = 24.46, c = 6.258, Z = 2; beta = 91.16° V = 1,534.83 Den(Calc)= 2.61
Help on Crystal System: Crystal System: Monoclinic - Sphenoidal H-M Symbol (2) Space Group: C 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.15(1), 2.624(0.6), 12.28(0.5),

Physical Properties of Kingsmountite

Help on Color: Color: Light brown, Pearl white.
Help on Density: Density: 2.51
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Pearly
Help on Streak: Streak: white

Optical Properties of Kingsmountite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2221,KPDmeas= 0.2309,KC= 0.2272
Ncalc = 1.57 - 1.59
Help on Optical Data: Optical Data: Biaxial (-), a=1.575, b=1.581, g=1.583, bire=0.0080, 2V(Calc)=58, 2V(Meas)=62.

Calculated Properties of Kingsmountite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.52 gm/cc
note: Specific Gravity of Kingsmountite =2.51 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0013879716
Boson Index = 0.9986120284
Help on Photoelectric: Photoelectric: PEKingsmountite = 4.99 barns/electron
U=PEKingsmountite x rElectron Density= 12.59 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kingsmountite is Not Radioactive

Kingsmountite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.08)Montgomeryite group Montgomeryite Ca4MgAl4(PO4)6(OH)4•12(H2O) C 2/c 2/m Kingsmountite (Ca,Mn)4(Fe,Mn)Al4(PO4)6(OH)4•12(H2O) C 2 2 Calcioferrite Ca4Fe(Fe,Al)4(PO4)6(OH)4•12(H2O) C 2 2 Zodacite Ca4MnFe4(PO4)6(OH)4•12(H2O) C 2/c,Cc Mono Angastonite! CaMgAl2(PO4)2(OH)4?7H2O P1 1
Help on  Strunz Class: Strunz Class: 08.DH.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1
08.DH.25 Calcioferrite Ca4Fe(Fe,Al)4(PO4)6(OH)4•12(H2O) C 2 2
08.DH.25 Kingsmountite (Ca,Mn)4(Fe,Mn)Al4(PO4)6(OH)4•12(H2O) C 2 2
08.DH.25 Montgomeryite Ca4MgAl4(PO4)6(OH)4•12(H2O) C 2/c 2/m
08.DH.25 Zodacite Ca4MnFe4(PO4)6(OH)4•12(H2O) C 2/c,Cc Mono

Other Kingsmountite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Kingsmountite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 08.DH.25





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