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General Barnesite Information |
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 Chemical Formula: |
Na2V6O16•3(H2O) | ||
| Composition: |
Molecular Weight = 661.66 gm | ||
| Sodium 6.95 % Na 9.37 % Na2O | |||
| Vanadium 46.19 % V 82.46 % V2O5 | |||
| Hydrogen 0.91 % H 8.17 % H2O | |||
| Oxygen 45.94 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Na2V5+6O16•3(H2O) | ||
| Environment: |
In small cavities and fractures and as interstitial filling in sandstone in the oxidized zone of a vanadiferous uranium deposit. | ||
| IMA Status: |
Approved IMA 1963 | ||
| Locality: |
Cactus Rat mine group, Yellow Cat district, 24 km southeast of Thompson, Grand Co., Utah. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for William H. Barnes (1903- ), National Research Council of Canada, Ottawa, Canada, authority on the crystallography of many vanadium minerals. | ||
| Name Pronunciation: |
Barnesite + Pronunciation  |
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| Synonym: |
ICSD 15751 | ||
| PDF 16-601 | |||
Barnesite Image | |||
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Images:
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Barnesite Crystallography |
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| Axial Ratios: |
a:b:c =3.3786:1:2.1599 | ||
| Cell Dimensions: |
a = 12.17, b = 3.602, c = 7.78, Z = 1; beta = 95.03° V = 339.73 Den(Calc)= 3.23 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 7.9(1), 3.12(0.7), 3.45(0.35), | ||
Physical Properties of Barnesite |
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| Color: |
Brown red, Dark red. | ||
| Density: |
3.15 | ||
| Luster: |
Adamantine | ||
| Streak: |
brownish red | ||
Optical Properties of Barnesite |
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| Gladstone-Dale: |
CI meas= 0.224 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.243 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2467,KPDmeas= 0.253,KC= 0.3259 Ncalc = 2.03 - 2.05 |
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| Optical Data: |
Biaxial (-), a=1.797 | ||
Calculated Properties of Barnesite |
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| Electron Density: |
Bulk Density (Electron Density)=3.03 gm/cc note: Specific Gravity of Barnesite =3.15 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.0013767458 Boson Index = 0.9986232542 |
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| Photoelectric: |
PEBarnesite = 8.97 barns/electron U=PEBarnesite x rElectron Density= 27.17 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Barnesite is Not Radioactive |
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Barnesite Classification |
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| Dana Class: |
47.03.01.03 (47)Vanadium Oxysalts | ||
| (47.03)(Hydrated) | |||
| (47.03.01)Hewettite Group | |||
| Strunz Class: |
04.HG.45 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate | ||
| 04.H - V[5,6] Vanadates | |||
| 04.HG -Unclassified V oxides | |||
Other Barnesite Information |
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| References: |
NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Barnesite : 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 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Barnesite using: Visit our Advertisers for Barnesite : A Bijoux Google Search for BarnesiteAdam's Minerals Google Search for Barnesite Cape Minerals Google Search for Barnesite Dakota Matrix Minerals Google Search for Barnesite Excalibur Mineral Corp. Google Search for Barnesite Exceptional Minerals Google Search for Barnesite John Betts Fine Minerals Search for Barnesite McDougall Minerals Google Search for Barnesite Mineral News Website Link Rock and Mineral Shows Google Search for Barnesite Weinrich Minerals, Inc. Google Search for Barnesite Ask about Barnesite here : Print or Cut-and-Paste your Barnesite Specimen Label here :
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