Orebroite-VIII Mineral Data

Advertisment

John Betts - Fine Minerals, New York. Dealers of Fine Minerals and Natural Crystal Clusters since 1989. We buy rock collections, we buy gem collections, we buy mineral collections.

Our Mission is Simple: RMS will be the go-to portal for all mineral, gem and rock shows in the USA

McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs

For more than thirty (30) years, Excalibur Mineral Corp. has been providing private collectors, researchers, major universities and museums throughout the world with reliably identified, rare and unusual mineral samples for science an

General Orebroite-VIII Information

Chemical Formula:

Mn++3(Sb+++++,Fe+++)SiO4(O,OH)3

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

Empirical Formula:

Mn²⁺₃Fe³⁺_0.5Sb_0.4(SiO₄)O_1.5(OH)_1.5

Environment:

Fine grained aggregate in antimonates.

IMA Status:

Approved IMA 1986

Locality:

At the Sjo mine, near Grythyttan, Orebro, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Orebroite-VIII + Pronunciation

Synonym:

Oerebroite

Search for Orebroite-VIII Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Orebroite-VIII Crystallography

Axial Ratios:

a:c = 1:0.5812

Cell Dimensions:

a = 8.183, c = 4.756, Z = 2; V = 275.80 Den(Calc)= 4.61

Crystal System:

Trigonal - PyramidalH-M Symbol (3) Space Group: P 3

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.096(1), 1.778(0.9), 2.334(0.7),

Physical Properties of Orebroite-VIII

Color:

Brown.

Diaphaneity:

Transparent to Translucent

Fracture:

Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Hardness:

4 - Fluorite

Luster:

Vitreous (Glassy)

Magnetism:

Weakly magnetic

Streak:

reddish brown

Optical Properties of Orebroite-VIII

Gladstone-Dale:

CI calc= 0.117 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1879,KC= 0.2128
Ncalc = 1.98

Optical Data:

Uniaxial (+), w=1.857, e=1.875, bire=0.0180.

Calculated Properties of Orebroite-VIII

Electron Density:

Bulk Density (Electron Density)=4.33 gm/cc
note: Specific Gravity of Orebroite-VIII =4.61 gm/cc.

Fermion Index:

Fermion Index = 0.0051107
Boson Index = 0.9948893

Photoelectric:

PE_{Orebroite-VIII}= 53.67 barns/electron
U=PE_{Orebroite-VIII} x rElectron Density= 232.40 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Orebroite-VIII is Not Radioactive

Orebroite-VIII Classification

Dana Class:

52.04.01.01 (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

52.04.01.01 Orebroite-VIII Mn3(Sb,Fe)SiO4(O,OH)3 P 3 3

52.04.01.02 Welinite-VIII (Mn,Mg)3(W,Mn)1-x(SiO4)(O,OH)3(x=1/3) P 3 3

52.04.01.03 Kittatinnyite Ca2Mn2MnSi2O8(OH)4•9(H2O) P 6₃/mmc 6/m 2/m 2/m

52.04.01.04 Franciscanite-VIII Mn3(V,[])1-x(SiO4)(O,OH)3(x=0.5) P 3 3

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

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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:

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

Visit our Advertisers for Orebroite-VIII :

A Bijoux Google Search for Orebroite-VIII
Adam's Minerals Google Search for Orebroite-VIII
Cape Minerals Google Search for Orebroite-VIII
Dakota Matrix Minerals Google Search for Orebroite-VIII
Excalibur Mineral Corp. Google Search for Orebroite-VIII
Exceptional Minerals Google Search for Orebroite-VIII
John Betts Fine Minerals Search for Orebroite-VIII
McDougall Minerals Google Search for Orebroite-VIII
Mineral News Website Link
Rock and Mineral Shows Google Search for Orebroite-VIII
Weinrich Minerals, Inc. Google Search 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 Español

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

Orebroite-VIII

Mn++3(Sb+++++,Fe+++)SiO4(O,OH)3
Dana No: 52.04.01.01 Strunz No: 09.JA.05
Locality:

Notes: