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Whiteite-(CaMnMg) Mineral Data

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General Whiteite-(CaMnMg) Information

Help on Chemical  Formula: Chemical Formula: CaMn++Mg2Al2(PO4)4(OH)2•8(H2O)
Help on Composition: Composition: Molecular Weight = 755.61 gm
   Calcium      5.30 %  Ca    7.42 % CaO
   Magnesium    6.43 %  Mg   10.67 % MgO
   Manganese    7.27 %  Mn    9.39 % MnO
   Aluminum     7.14 %  Al   13.49 % Al2O3
   Phosphorus  16.40 %  P    37.57 % P2O5
   Hydrogen     2.40 %  H    21.46 % H2O
   Oxygen      55.05 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMn2+Mg2Al2(PO4)4(OH)2•8(H2O)
Help on Environment: Environment: In a pegmatite.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Tip Top pegmatite, Custer, Custer County, South Dakota, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for John S. White, Jr. (1933-), former editor of the Mineralogical Record and professional curator of minerals and gems.
Help on Name Pronunciation: Name Pronunciation: Whiteite-(CaMnMg) Say WHITEITE-(CAMNMG)
 

Whiteite-(CaMnMg) Image

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  Whiteite-(CaMnMg)   Lazulite

Comments: Light beige-colored whiteite-(CaMnMg) crystal perched on dark blue lazulite.
Location: Rapid Creek, Yukon Territory, Canada. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Whiteite-(CaMnMg) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.1275:1:1.4491
Help on Cell Dimensions: Cell Dimensions: a = 14.842, b = 6.976, c = 10.109, Z = 2; beta = 112.59° V = 966.36 Den(Calc)= 2.60
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.31(1), 2.79(0.8), 4.85(0.5),
 

Physical Properties of Whiteite-(CaMnMg)

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Greenish yellow, Yellow, Light lilac, Pink.
Help on Density: Density: 2.63
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Whiteite-(CaMnMg)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.225,KPDmeas= 0.2224,KC= 0.2251
Ncalc = 1.59
Help on Optical Data: Optical Data: Biaxial (+), a=1.58, b=1.584, g=1.591, bire=0.0110, 2V(Calc)=76, 2V(Meas)=74-81.
 

Calculated Properties of Whiteite-(CaMnMg)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.62 gm/cc
note: Specific Gravity of Whiteite-(CaMnMg) =2.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0067726593
Boson Index = 0.9932273407
Help on Photoelectric: Photoelectric: PEWhiteite-(CaMnMg) = 3.62 barns/electron
U=PEWhiteite-(CaMnMg) x rElectron Density= 9.48 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Whiteite-(CaMnMg) is Not Radioactive
 

Whiteite-(CaMnMg) Classification

Help on  Dana Class: Dana Class: 42.11.03.03 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.03)Whiteite Group
 
42.11.03.01 Whiteite-(CaFeMg) Ca(Fe,Mn)Mg2Al2(PO4)4(OH)2•8(H2O) P 21/a 2/m
 
42.11.03.02 Whiteite-(MnFeMg) (Mn,Ca)(Fe,Mn)Mg2Al2(PO4)4(OH)2•8(H2O) P 2/a 2/m
 
42.11.03.03 Whiteite-(CaMnMg) CaMnMg2Al2(PO4)4(OH)2•8(H2O) P 2/a 2/m
 
42.11.03.04 Rittmannite MnMnFeAl2(OH)2(PO4)4•8(H2O) P 2/a 2/m
 
42.11.03.05 Jahnsite-(CaFeFe)! (Ca,Mn)(Fe,Mn)Fe2Fe2(PO4)4(OH)2•8(H2O) P 2/a 2/m
 
42.11.03.06 Jahnsite-(NaFeMg)! NaFeMg2Fe2(PO4)4(OH)2•8H2O P 2/a 2/m
 
42.11.03.07 Jahnsite-(CaMgMg)! CaMgMg2Fe2(PO4)4(OH)2•8H2O P 2/a 2/m
 
42.11.03.08 Jahnsite-(NaMnMg)! NaMnMg2Fe2(PO4)4(OH)2•8H2O P 2/a 2/m
Help on  Strunz Class: Strunz Class: 08.DH.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1
 
08.DH.15 Keckite Ca(Mn,Zn)2Fe3(PO4)4(OH)3•2(H2O) P 21/a 2/m
 
08.DH.15 Jahnsite-(CaMnFe) CaMnFe2Fe2(PO4)4(OH)2•8(H2O) P 2/a 2/m
 
08.DH.15 Jahnsite-(CaMnMg) CaMnMg2Fe2(PO4)4(OH)2•8(H2O) P 2/a 2/m
 
08.DH.15 Jahnsite-(CaMnMn) CaMnMn2Fe2(PO4)4(OH)2•8(H2O) P 2/a 2/m
 
08.DH.15 Jahnsite-(MnMnMn)* MnMnMn2Fe2(PO4)4(OH)2•8(H2O) P 2/a 2/m
 
08.DH.15 Kaluginite* (Mn,Ca)MgFe(PO4)2(OH)•4(H2O) C cca 2/m 2/m 2/m
 
08.DH.15 Rittmannite MnMnFeAl2(OH)2(PO4)4•8(H2O) P 2/a 2/m
 
08.DH.15 Whiteite-(MnFeMg) (Mn,Ca)(Fe,Mn)Mg2Al2(PO4)4(OH)2•8(H2O) P 2/a 2/m
 
08.DH.15 Whiteite-(CaFeMg) Ca(Fe,Mn)Mg2Al2(PO4)4(OH)2•8(H2O) P 21/a 2/m
 
08.DH.15 Whiteite-(CaMnMg) CaMnMg2Al2(PO4)4(OH)2•8(H2O) P 2/a 2/m
 
08.DH.15 Jahnsite-(CaFeFe)! (Ca,Mn)(Fe,Mn)Fe2Fe2(PO4)4(OH)2•8(H2O) P 2/a 2/m
 
08.DH.15 Jahnsite-(NaFeMg)! NaFeMg2Fe2(PO4)4(OH)2•8H2O P 2/a 2/m
 
08.DH.15 Jahnsite-(CaMgMg)! CaMgMg2Fe2(PO4)4(OH)2•8H2O P 2/a 2/m
 
08.DH.15 Jahnsite-(NaMnMg)! NaMnMg2Fe2(PO4)4(OH)2•8H2O P 2/a 2/m
 

Other Whiteite-(CaMnMg) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.75,p933,1990) OPTIC PROP.(Am.Min.,Vol.75,p933,1990)
Help on See Also: See Also: Links to other databases for Whiteite-(CaMnMg) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Whiteite-(CaMnMg) Specimen Label here :

Whiteite-(CaMnMg)

CaMn++Mg2Al2(PO4)4(OH)2•8(H2O)
Dana No: 42.11.03.03 Strunz No: 08.DH.15
Locality:

 

Notes:

 

 
   
 


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