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Blakeite Mineral Data

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General Blakeite Information

Help on Chemical  Formula: Chemical Formula: Fe2(TeO3)3
Help on Composition: Composition: Molecular Weight = 638.49 gm
   Iron       17.49 %  Fe   25.01 % Fe2O3
   Tellurium  59.95 %  Te   74.99 % TeO2
   Oxygen     22.55 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+2(TeO3)3
Help on Environment: Environment: An inadequately described species. Probably a mixture of tellurite and goethite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1944
Help on Locality: Locality: Mohawk mine, Goldfield, Esmeralda County, Nevada, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for William P. Blake (1826-1910), a pioneer geologist and mineralogist of the American southwest.
Help on Name Pronunciation: Name Pronunciation: Blakeite Say BLAKEITE

Blakeite Image

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Comments: Brown crusts of blakeite on quartz.
Location: Goldfield, Esmeralda County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Blakeite Crystallography

Help on Crystal System: Crystal System: Isometric Space Group: Cubic ?
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3(1), 2.54(0.9), 1.72(0.8),

Physical Properties of Blakeite

Help on Color: Color: Brown, Dark reddish brown.
Help on Density: Density: 3.1
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Earthy (Dull)

Optical Properties of Blakeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.63 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.3742,KC= 0.2295
Ncalc = 1.71
Help on Optical Data: Optical Data: Isotropic, n=2.16.

Calculated Properties of Blakeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.72 gm/cc
note: Specific Gravity of Blakeite =3.10 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEBlakeite = 215.54 barns/electron
U=PEBlakeite x rElectron Density= 586.04 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Blakeite is Not Radioactive

Blakeite Classification

Help on  Dana Class: Dana Class: (28)Sulfate Minerals
  (28.00)Without Dana Classification Numbers
  (28.00.00)Tellurate Adranosite (NH4)4NaAl2(SO4)4Cl(OH)2 I 41/acd 4mm Blakeite Fe2(TeO3)3 Cubic ? Cubic IMA2008-029 (NH4)3Fe(SO4)3 R 3c 3m IMA2008-040 BiMo2O7(OH)•2H2O P 21/m 2/m Radiobarite* (Ba,Ra)SO4 2/m 2/m 2/m Zincosite* ZnSO4 Unk Ortho
Help on  Strunz Class: Strunz Class: 07.XX.00 07 - SULFATES (SELENATES, TELLURATES)
  07.X - Unclassified Strunz SULFATES (SELENATES, TELLURATES)
  07.XX -Tellurate
07.XX.00 Blakeite Fe2(TeO3)3 Cubic ? Cubic
07.XX.00 Aiolosite! Na4Bi(SO4)3Cl P 63/m 6/m
07.XX.00 Steverustite Pb5(OH)5[Cu(SO3S--)3](H2O)1.67 P 21/n 2/m
07.XX.00 Adranosite (NH4)4NaAl2(SO4)4Cl(OH)2 I 41/acd 4mm
07.XX.00 Grandviewite! Cu3Al9(SO4)2(OH)29 P 2, Pm or P 2/m Mono
07.XX.00 IMA2009-008 Y2[(UO2)8O6(SO4)4(OH)2]•26H2O P1 1

Other Blakeite Information

Help on References: References: NAME( AmMin, v29:211) 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 Blakeite :
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 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 07.XX.00





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