Mineralogy Database

Wickmanite Mineral Data

Search Webmineral :
  

General Wickmanite Information

Help on Chemical Formula: Chemical Formula: Mn++Sn++++(OH)6
Help on Composition: Composition: Molecular Weight = 275.69 gm
   Manganese  19.93 %  Mn   25.73 % MnO
   Tin        43.06 %  Sn   54.67 % SnO2
   Hydrogen    2.19 %  H    19.60 % H2O
   Oxygen     34.82 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+Sn(OH)6
Help on Environment: Environment: Nephelin syenite dike and altered garnet skarn.
Help on IMA Status: IMA Status: Approved IMA 1967
Help on Locality: Locality: Langban, Varmland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Franz-Erik Wickman (1915-), Swedish mineralogist, who studied the mineralogy of the Langban area.
Help on Name Pronunciation: Name Pronunciation: Wickmanite + Pronunciation Say WICKMANITE
Help on Synonym: Synonym: ICSD 15313
  PDF 20-727
 

Wickmanite Image

Click Here for Larger Image in a New Browser Window Images:
Click Here for Larger Image

  Wickmanite

Comments: Colorless wickmanite crystals.
Location: Langban, Varmland, Sweden. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Wickmanite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 7.873, Z = 4; V = 488.00 Den(Calc)= 3.75
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: P n3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.931(1), 1.762(0.7), 2.778(0.6),
 

Physical Properties of Wickmanite

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow, Orange brown, Yellow orange, Colorless.
Help on Density: Density: 3.89
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Octahedral Crystals - Occurs as octahedral shaped crystals.
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Wickmanite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.073 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.188,KPDmeas= 0.1812,KC= 0.1955
Ncalc = 1.73 - 1.76
Help on Optical Data: Optical Data: Isotropic, n=1.705.
 

Calculated Properties of Wickmanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.51 gm/cc
note: Specific Gravity of Wickmanite =3.75 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEWickmanite = 132.04 barns/electron
U=PEWickmanite x rElectron Density= 463.38 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wickmanite is Not Radioactive
 

Wickmanite Classification
Help on Dana Class: Dana Class: 06.03.06.01 (06)Hydroxides and Oxides Containing Hydroxyl
  (06.03)with (OH)3 or (OH)6 groups
  (06.03.06)Wickmanite group (Cubic or Trigonal, 2+ cations containing Sn)
 
06.03.06.01 Wickmanite MnSn(OH)6 P n3m 4/m 3 2/m
 
06.03.06.02 Schoenfliesite MgSn(OH)6 P n3 2/m 3
 
06.03.06.03 Natanite FeSn(OH)6 P n3m 4/m 3 2/m
 
06.03.06.04 Vismirnovite ZnSn(OH)6 P n3m 4/m 3 2/m
 
06.03.06.05 Burtite CaSn(OH)6 R 3 3
 
06.03.06.06 Mushistonite (Cu,Zn,Fe)Sn(OH)6 P n3m 4/m 3 2/m
Help on Strunz Class: Strunz Class: 04.FC.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FC -Hydroxides with OH, without H2O; corner-sharing octahedra
 
04.FC.10 Burtite CaSn(OH)6 R 3 3
 
04.FC.10 Mushistonite (Cu,Zn,Fe)Sn(OH)6 P n3m 4/m 3 2/m
 
04.FC.10 Natanite FeSn(OH)6 P n3m 4/m 3 2/m
 
04.FC.10 Vismirnovite ZnSn(OH)6 P n3m 4/m 3 2/m
 
04.FC.10 Schoenfliesite MgSn(OH)6 P n3 2/m 3
 
04.FC.10 Wickmanite MnSn(OH)6 P n3m 4/m 3 2/m
 

Other Wickmanite Information
Help on References: References: NAME( Dana8) 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 Wickmanite :
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

Search for Wickmanite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Wickmanite :

Ask about Wickmanite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Wickmanite Specimen Label here :

Wickmanite

Mn++Sn++++(OH)6
Dana No: 06.03.06.01 Strunz No: 04.FC.10
Locality:

 

Notes:

 
 
   
 

Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.