Mineralogy Database

Orebroite-VIII Mineral Data

Search Webmineral :

General Orebroite-VIII Information

Help on Chemical  Formula: Chemical Formula: Mn++3(Sb+++++,Fe+++)SiO4(O,OH)3
Help on Composition: Composition: Molecular Weight = 383.03 gm
   Manganese  43.03 %  Mn   55.56 % MnO
   Iron        7.29 %  Fe   10.42 % Fe2O3
   Silicon     7.33 %  Si   15.69 % SiO2
   Antimony   12.71 %  Sb   16.89 % Sb2O5
   Hydrogen    0.39 %  H     3.53 % H2O
   Oxygen     29.24 %  O
             ______        ______ 
             100.00 %      102.09 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+3Fe3+0.5Sb0.4(SiO4)O1.5(OH)1.5
Help on Environment: Environment: Fine grained aggregate in antimonates.
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: At the Sjo mine, near Grythyttan, Orebro, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Orebroite-VIII + Pronunciation Say OREBROITE-VIII
Help on Synonym: Synonym: Oerebroite

Orebroite-VIII Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.5812
Help on Cell Dimensions: Cell Dimensions: a = 8.183, c = 4.756, Z = 2; V = 275.80 Den(Calc)= 4.61
Help on Crystal System: Crystal System: Trigonal - Pyramidal H-M Symbol (3) Space Group: P 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.096(1), 1.778(0.9), 2.334(0.7),

Physical Properties of Orebroite-VIII

Help on Color: Color: Brown.
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Magnetism: Magnetism: Weakly magnetic
Help on Streak: Streak: reddish brown

Optical Properties of Orebroite-VIII

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.117 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1879,KC= 0.2128
Ncalc = 1.98
Help on Optical Data: Optical Data: Uniaxial (+), w=1.857, e=1.875, bire=0.0180.

Calculated Properties of Orebroite-VIII

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.33 gm/cc
note: Specific Gravity of Orebroite-VIII =4.61 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0051107
Boson Index = 0.9948893
Help on Photoelectric: Photoelectric: PEOrebroite-VIII = 53.67 barns/electron
U=PEOrebroite-VIII x rElectron Density= 232.40 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Orebroite-VIII is Not Radioactive

Orebroite-VIII Classification

Help on  Dana Class: Dana Class: (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.04)with cations in [6] and/or > [6] coordination
  (52.04.01)Welinite group Orebroite-VIII Mn3(Sb,Fe)SiO4(O,OH)3 P 3 3 Welinite-VIII (Mn,Mg)3(W,Mn)1-x(SiO4)(O,OH)3(x=1/3) P 3 3 Kittatinnyite Ca2Mn2MnSi2O8(OH)4•9(H2O) P 63/mmc 6/m 2/m 2/m Franciscanite-VIII Mn3(V,[])1-x(SiO4)(O,OH)3(x=0.5) P 3 3
Help on  Strunz Class: Strunz Class: 09.JA.05 09 - SILICATES (Germanates)
  09.J - Germanates
  09.JA -Germanates
09.JA.05 Carboirite-III FeAl2GeO5(OH)2 C1 1
09.JA.05 Carboirite-VIII Fe(Al,Ge)2O[(Ge,Si)O4](OH)2 C1 1
09.JA.05 Orebroite-VIII Mn3(Sb,Fe)SiO4(O,OH)3 P 3 3

Other Orebroite-VIII Information

Help on References: References: NAME( AntBidBlaNic2) 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 Orebroite-VIII :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Orebroite-VIII using:

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

Visit our Advertisers for Orebroite-VIII :

Ask about Orebroite-VIII 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 Espa´┐Żol

Print or Cut-and-Paste your Orebroite-VIII Specimen Label here :


Dana No: Strunz No: 09.JA.05





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