Switzerite Mineral Data (original) (raw)

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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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 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:

40.03.05.04 (40)Hydrated Phosphates, etc

(40.03)where (A++)3 (XO4)2 � x(H2O)

(40.03.05)Ludlamite Group

40.03.05.01 Ludlamite (Fe,Mg,Mn)3(PO4)2•4(H2O) P 21/a 2/m

40.03.05.02 Metaswitzerite Mn3(PO4)2•4(H2O) P 2/a 2/m

40.03.05.03 Sterlinghillite Mn3(AsO4)2•3(H2O) Mono Mono

40.03.05.04 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
15 - WWW-MINCRYST

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Ask about Switzerite here :
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Print or Cut-and-Paste your Switzerite Specimen Label here :

Switzerite

(Mn++,Fe++)3(PO4)2•7(H2O)
Dana No: 40.03.05.04 Strunz No: 08.CE.25
Locality:

Notes: