Orebroite-VIII Mineral Data + Say OREBROITE-VIII


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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 Synonym: Synonym: Oerebroite
 

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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 - PyramidalH-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 Diaphaniety: Diaphaniety: 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
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:

relectron=4.33 gm/cc
note: rOrebroite-VIII =4.61 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00511
Boson Index = 0.99489
Help on Photoelectric: Photoelectric:

PEOrebroite-VIII = 53.67 barns/electron
U=PEOrebroite-VIII x relectron= 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: 52.4.1.1 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.4)with cations in [6] and/or > [6] coordination
  (52.4.1)Welinite group
 
52.4.1.1 Orebroite-VIII Mn3(Sb,Fe)SiO4(O,OH)3 P 3 3
 
52.4.1.2 Welinite-VIII (Mn,Mg)3(W,Mn)1-x(SiO4)(O,OH)3(x=1/3) P 3 3
 
52.4.1.3 Kittatinnyite Ca2Mn2MnSi2O8(OH)4·9(H2O) P 63/mmc 6/m 2/m 2/m
 
52.4.1.4 Franciscanite-VIII Mn3(V,[])1-x(SiO4)(O,OH)3(x=0.5) P 3 3
Help on  Strunz Class: Strunz Class: VIII/B.09-12 VIII - Silicates
  VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cations of octahedral and tetrahedral orientation [4/6]
  VIII/B.09 - Braunite - Langbanite - Katoptrite series
 
VIII/B.09-03 Braunite-I MnMn6SiO12 I 41/acd 4/m 2/m 2/m
 
VIII/B.09-05 Abswurmbachite CuMn6SiO12 I 41/acd 4/m 2/m 2/m
 
VIII/B.09-07 Neltnerite CaMn6SiO12 I 41/acd 4/m 2/m 2/m
 
VIII/B.09-10* Franciscanite-III Mn6V2Si2(O,OH)14 P 3 3
 
VIII/B.09-10 Franciscanite-VIII Mn3(V,[])1-x(SiO4)(O,OH)3(x=0.5) P 3 3
 
VIII/B.09-12* Orebroite-III Mn6(Fe,Sb)2Si2(O,OH)14 P 3 3
 
VIII/B.09-12 Orebroite-VIII Mn3(Sb,Fe)SiO4(O,OH)3 P 3 3
 
VIII/B.09-14* Welinite-III Mn6(W,Mg)2Si2(O,OH)14 P 3 3
 
VIII/B.09-14 Welinite-VIII (Mn,Mg)3(W,Mn)1-x(SiO4)(O,OH)3(x=1/3) P 3 3
 
VIII/B.09-17 Langbanite (Mn,Ca,Fe)4(Mn,Fe)9SbSi2O24 C 2/m 2/m
 
VIII/B.09-20 Yeatmanite Mn9Zn6Sb2Si4O28 P1 1
 
VIII/B.09-30 Katoptrite (Mn,Mg)13(Al,Fe)4Sb2Si2O28 C 2/m 2/m
 

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 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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

Orebroite-VIII

Mn++3(Sb+++++,Fe+++)SiO4(O,OH)3
Dana No: 52.4.1.1 Strunz No: VIII/B.09-12
Locality:

 

Notes:

 

 
   
 
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