Mineralogy Database

Wiserite Mineral Data

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General Wiserite Information

Help on Chemical  Formula: Chemical Formula: Mn4B2O5(OH,Cl)4
Help on Composition: Composition: Molecular Weight = 398.62 gm
   Manganese  55.13 %  Mn   71.18 % MnO
   Boron       5.42 %  B    17.46 % B2O3
   Hydrogen    0.88 %  H     7.91 % H2O
   Chlorine    4.45 %  Cl    4.45 % Cl
                -   %   Cl   -1.00 % -O=Cl2   
   Oxygen     34.12 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+4B2O5(OH)3.5Cl0.5
Help on Environment: Environment: Accessory mineral in stratiform manganese deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1845
Help on Locality: Locality: Gonzen mine, near Sargans, St. Gallen, Switzerland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for David Friedrich Wiser (1802-1878), Swiss mineralogist who first analyzed the mineral.
Help on Name Pronunciation: Name Pronunciation: Wiserite Say WISERITE
Help on Synonym: Synonym: ICSD 203150
  PDF 45-1470

Wiserite Image

Click Here for Larger   Image in a New Browser Window Images:
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Comments: Pale pink granular wiserite.
Location: Kombat Mine, Kombat, Otjozondjupa, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Wiserite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.16249
Help on Cell Dimensions: Cell Dimensions: a = 20.192, c = 3.281, Z = 7; V = 1,337.72 Den(Calc)= 3.46
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: P 4/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 14.4(1), 2.66(0.8), 6.42(0.8),

Physical Properties of Wiserite

Help on Cleavage: Cleavage: None
Help on Color: Color: White, Brownish, Reddish, Pinkish brown.
Help on Density: Density: 3.42 - 3.54, Average = 3.48
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white

Optical Properties of Wiserite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.038 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.033 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2116,KPDmeas= 0.2103,KC= 0.2187
Ncalc = 1.75 - 1.77
Help on Optical Data: Optical Data: Uniaxial (-), e=1.7-1.717, w=1.751-1.76, bire=0.0430-0.0510.

Calculated Properties of Wiserite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.30 gm/cc
note: Specific Gravity of Wiserite =3.46 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEWiserite = 14.65 barns/electron
U=PEWiserite x rElectron Density= 48.31 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wiserite is Not Radioactive

Wiserite Classification

Help on  Dana Class: Dana Class: (27)Compound Borates
  (27.01)Dana Type
  (27.01.10)Dana Group Wiserite Mn4B2O5(OH,Cl)4 P 4/n 4/m
Help on  Strunz Class: Strunz Class: 06.BA.20 06 - BORATES
  06.B - Diborates
  06.BA -Neso-diborates with double triangles B2(O,OH)5; 2(2D); 2(2D) + OH, etc.
06.BA.20 Wiserite Mn4B2O5(OH,Cl)4 P 4/n 4/m

Other Wiserite Information

Help on References: References: NAME( AntBidBlaNic5) 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 Wiserite :
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: 06.BA.20





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