Barnesite Mineral Data + 
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- 47.3.1.1 Hewettite CaV6O16·9(H2O) P 2/m 2/m
- 47.3.1.2 Metahewettite CaV6O16·3(H2O) A2/m 2/m
- 47.3.1.3 Barnesite Na2V6O16·3(H2O) P 2/m 2/m
- 47.3.1.4 Hendersonite Ca1.3V6O16·6(H2O) Pnam 2/m 2/m 2/m
- 47.3.1.5 Grantsite Na4CaxV2xV12-2xO32·8(H2O) C 2/m 2/m
- IV/G.12-10 Barnesite Na2V6O16·3(H2O) P 2/m 2/m
- IV/G.12-20 Grantsite Na4CaxV2xV12-2xO32·8(H2O) C 2/m 2/m
- IV/G.12-30 Hendersonite Ca1.3V6O16·6(H2O) Pnam 2/m 2/m 2/m
- IV/G.12-40 Hewettite CaV6O16·9(H2O) P 2/m 2/m
- IV/G.12-50 Metahewettite CaV6O16·3(H2O) A2/m 2/m
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) | ||
| IMA Status: |
Approved IMA 1963 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| 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 |
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| Optical Data: |
Biaxial (-), a=1.797 | ||
Calculated Properties of Barnesite |
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| Electron Density: |
relectron=3.03 gm/cc |
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| Fermion Index |
Fermion Index = 0.00137 Boson Index = 0.99863 |
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| Photoelectric: |
PEBarnesite = 8.97 barns/electron |
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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: |
47.3.1.3 (47)Vanadium Oxysalts | ||
| (47.3)(Hydrated) | |||
| (47.3.1)Dana Group | |||
| Strunz Class: |
IV/G.12-10 IV - Oxides | ||
| IV/G - Vanadiumoxides (with V4+/5+) Layered vanadates. Typical Vanadiumbronzes | |||
| IV/G.12 - Barnessite - Metahewettite series | |||
Other Barnesite Information |
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| References: |
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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Barnesite using: Visit our Advertisers for Barnesite : Translate Barnesite Mineral Data : Ask about Barnesite here : Print or Cut-and-Paste your Barnesite Specimen Label here :
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