Mineralogy Database

Switzerite Mineral Data

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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 Name Pronunciation: Name Pronunciation: Switzerite + Pronunciation Say SWITZERITE
Help on Synonym: Synonym: ICSD 202111
  PDF 20-Mar

Switzerite Image

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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 - Prismatic H-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),

Physical Properties of Switzerite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Brown, Pink.
Help on Density: Density: 2.535
Help on Diaphaneity: Diaphaneity: 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
Ncalc = 1.58 - 1.59
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: Bulk Density (Electron Density)=2.52 gm/cc
note: Specific Gravity of Switzerite =2.54 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0020876107
Boson Index = 0.9979123893
Help on Photoelectric: Photoelectric: PESwitzerite = 9.61 barns/electron
U=PESwitzerite x rElectron Density= 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)Hydrated Phosphates, etc
  (40.03)where (A++)3 (XO4)2 � x(H2O)
  (40.03.05)Ludlamite Group Ludlamite (Fe,Mg,Mn)3(PO4)2•4(H2O) P 21/a 2/m Metaswitzerite Mn3(PO4)2•4(H2O) P 2/a 2/m Sterlinghillite Mn3(AsO4)2•3(H2O) Mono Mono Switzerite (Mn,Fe)3(PO4)2•7(H2O) P 21/a 2/m
Help on  Strunz Class: Strunz Class: 08.CE.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CE -With only medium-sized cations, RO4:H2O � 1:2.5
08.CE.25 Metaswitzerite Mn3(PO4)2•4(H2O) P 2/a 2/m
08.CE.25 Switzerite (Mn,Fe)3(PO4)2•7(H2O) P 21/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 - 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.CE.25





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