Switzerite Mineral Data + Say SWITZERITE

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General Switzerite Information

Help on Chemical  Formula: Chemical Formula: (Mn++,Fe++)3(PO4)2·7(H2O)
Help on Composition: Composition: Molecular Weight = 481.55 gm
   Manganese   25.67 %  Mn   33.15 % MnO
   Iron         8.70 %  Fe   11.19 % FeO
   Phosphorus  12.86 %  P    29.48 % P2O5
   Hydrogen     2.93 %  H    26.19 % H2O
   Oxygen      49.84 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+2.25Fe2+0.75(PO4)2·7(H2O)
Help on IMA Status: IMA Status: Approved IMA 1967
Help on Locality: Locality: Foote Mineral Co. mine in Kings Mountain, Cleveland County., North Carolina, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for George Switzer, retired chairman of the Dept. of Mineral Sciences, Smithsonian
Help on Synonym: Synonym: ICSD 202111
  PDF 20-Mar
 

Switzerite Image

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Switzerite

Comments: Pale brown sub-metallic thin platy switzerite coatings.
Location: Foote Mine, King's Mountain, Cleveland County, North Carolina, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Switzerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6477:1:0.8971
Help on Cell Dimensions: Cell Dimensions: a = 8.528, b = 13.166, c = 11.812, Z = 4; beta = 110.05° V = 1,245.87 Den(Calc)= 2.57
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 11.12(1), 3.37(0.9), 6.81(0.6),
Click Here for Large Switzerite Structure Window Crystal Structure:

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Help on Above


Zanazzi P F , Leavens P B , White J S , American Mineralogist , 71 (1986) p.1224-1228, Crystal structure of switzerite, Mn3(PO4)2.7H2O and its relationship to, metaswitzerite, Mn3(PO4)2.4H2O

 

Physical Properties of Switzerite

Help on Cleavage: Cleavage: [001] Perfect
Help on Color: Color: Brown, Pink.
Help on Density: Density: 2.535
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Switzerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2223,KPDmeas= 0.2254,KC= 0.2293
Help on Optical Data: Optical Data: Biaxial (-), a=1.56, b=1.574, g=1.58, bire=0.0200, 2V(Calc)=64, 2V(Meas)=70.
 

Calculated Properties of Switzerite

Help on Electron Density: Electron Density:

relectron=2.52 gm/cc
note: rSwitzerite =2.54 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00208
Boson Index = 0.99792
Help on Photoelectric: Photoelectric:

PESwitzerite = 9.61 barns/electron
U=PESwitzerite x relectron= 24.25 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Switzerite is Not Radioactive

 

Switzerite Classification

Help on  Dana Class: Dana Class: 40.3.5.4 (40)Hydrated Phosphates, etc
  (40.3)where (A++)3 (XO4)2 · x(H2O)
  (40.3.5)Dana Group
 
40.3.5.1 Ludlamite (Fe,Mg,Mn)3(PO4)2·4(H2O) P 21/a 2/m
 
40.3.5.2 Metaswitzerite Mn3(PO4)2·4(H2O) P 2/a 2/m
 
40.3.5.3 Sterlinghillite Mn3(AsO4)2·3(H2O) Mono Mono
 
40.3.5.4 Switzerite (Mn,Fe)3(PO4)2·7(H2O) P 21/a 2/m
Help on  Strunz Class: Strunz Class: VII/C.10-20 VII - Phosphates, Arsenates and Vanadates
  VII/C - Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and Mn, Fe, Cu, Zn, Mg
  VII/C.10 - Ludlamite - Metaswitzerite series
 
VII/C.10-10 Ludlamite (Fe,Mg,Mn)3(PO4)2·4(H2O) P 21/a 2/m
 
VII/C.10-20 Switzerite (Mn,Fe)3(PO4)2·7(H2O) P 21/a 2/m
 
VII/C.10-30 Metaswitzerite Mn3(PO4)2·4(H2O) P 2/a 2/m
 

Other Switzerite Information

Help on References: References: 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 Switzerite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Switzerite

(Mn++,Fe++)3(PO4)2·7(H2O)
Dana No: 40.3.5.4 Strunz No: VII/C.10-20
Locality:

 

Notes:

 

 
   
 
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