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Blakeite Mineral Data
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General Blakeite Information
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 Chemical Formula: |
Fe2(TeO3)3 |
| Composition: |
Molecular Weight = 638.49 gm |
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Iron 17.49 % Fe 25.01 % Fe2O3 |
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Tellurium 59.95 % Te 74.99 % TeO2 |
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Oxygen 22.55 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Fe3+2(TeO3)3 |
| Environment: |
An inadequately described species. Probably a mixture of tellurite and goethite. |
| IMA Status: |
Valid Species (Pre-IMA) 1944 |
| Locality: |
Mohawk mine, Goldfield, Esmeralda County, Nevada, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for William P. Blake (1826-1910), a pioneer geologist and mineralogist of the American southwest. |
| Name Pronunciation: |
Blakeite  |
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Blakeite Image |
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Images:
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Blakeite Crystallography
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| Crystal System: |
Isometric Space Group: Cubic ? |
| X Ray Diffraction: |
By Intensity(I/Io): 3(1), 2.54(0.9), 1.72(0.8), |
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Physical Properties of Blakeite
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| Color: |
Brown, Dark reddish brown. |
| Density: |
3.1 |
| Hardness: |
2-3 - Gypsum-Calcite |
| Luster: |
Earthy (Dull) |
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Optical Properties of Blakeite
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| Gladstone-Dale: |
CI meas= -0.63 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.3742,KC= 0.2295
Ncalc = 1.71 |
| Optical Data: |
Isotropic, n=2.16. |
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Calculated Properties of Blakeite
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| Electron Density: |
Bulk Density (Electron Density)=2.72 gm/cc
note: Specific Gravity of Blakeite =3.10 gm/cc.
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| Fermion Index: |
Fermion Index = 0.05
Boson Index = 0.95 |
| Photoelectric: |
PEBlakeite = 215.54 barns/electron
U=PEBlakeite x rElectron Density= 586.04 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Blakeite is Not Radioactive |
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Blakeite Classification
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| Dana Class: |
28.00.00.00 (28)Sulfate Minerals |
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(28.00)Without Dana Classification Numbers |
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(28.00.00)Tellurate |
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28.00.00.00 Adranosite (NH4)4NaAl2(SO4)4Cl(OH)2 I 41/acd 4mm |
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28.00.00.00 Blakeite Fe2(TeO3)3 Cubic ? Cubic |
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28.00.00.00 IMA2008-029 (NH4)3Fe(SO4)3 R 3c 3m |
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28.00.00.00 IMA2008-040 BiMo2O7(OH)•2H2O P 21/m 2/m |
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28.00.00.00 Radiobarite* (Ba,Ra)SO4 2/m 2/m 2/m |
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28.00.00.00 Zincosite* ZnSO4 Unk Ortho |
| Strunz Class: |
07.XX.00 07 - SULFATES (SELENATES, TELLURATES) |
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07.X - Unclassified Strunz SULFATES (SELENATES, TELLURATES) |
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07.XX -Tellurate |
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07.XX.00 Blakeite Fe2(TeO3)3 Cubic ? Cubic |
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07.XX.00 Aiolosite! Na4Bi(SO4)3Cl P 63/m 6/m |
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07.XX.00 Steverustite Pb5(OH)5[Cu(SO3S--)3](H2O)1.67 P 21/n 2/m |
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07.XX.00 Adranosite (NH4)4NaAl2(SO4)4Cl(OH)2 I 41/acd 4mm |
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07.XX.00 Grandviewite! Cu3Al9(SO4)2(OH)29 P 2, Pm or P 2/m Mono |
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07.XX.00 IMA2009-008 Y2[(UO2)8O6(SO4)4(OH)2]•26H2O P1 1 |
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Other Blakeite Information
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| References: |
NAME( AmMin, v29:211) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| 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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Print or Cut-and-Paste your Blakeite Specimen Label here :
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Blakeite
Fe2(TeO3)3
Dana No: 28.00.00.00 Strunz No: 07.XX.00
Locality:
Notes:
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