Chervetite Mineral Data + 
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B & L Minerals, Fine Mineral specimens for sale for collectors of all levels
- 38.5.5.1 Chervetite Pb2V2O7 P 21/a 2/m
- 38.5.5.2 Ziesite Cu2V2O7 A2/a 2/m
- VII/A.20-05 Petewilliamsite! (Ni,Co,Cu)30(As2O7)15 C 2 2
- VII/A.20-10 Ziesite Cu2V2O7 A2/a 2/m
- VII/A.20-20 Blossite Cu2V2O7 F dd2 mm2
- VII/A.20-30 Chervetite Pb2V2O7 P 21/a 2/m
General Chervetite Information |
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 Chemical Formula: |
Pb2V2O7 | ||
| Composition: |
Molecular Weight = 628.28 gm | ||
| Vanadium 16.22 % V 28.95 % V2O5 | |||
| Lead 65.96 % Pb 71.05 % PbO | |||
| Oxygen 17.83 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Pb2V5+2O7 | ||
| IMA Status: |
Approved IMA 1963 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 2901 | ||
| PDF 47-1735 | |||
Chervetite Image | |||
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Images:
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Chervetite Crystallography |
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| Axial Ratios: |
a:b:c =1.8401:1:0.9494 | ||
| Cell Dimensions: |
a = 13.47, b = 7.32, c = 6.95, Z = 4; beta = 107.417° V = 653.85 Den(Calc)= 6.38 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.428(1), 3.441(1), 3.206(0.8), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Chervetite |
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| Cleavage: |
[100] Indistinct | ||
| Color: |
Brown, Colorless, Gray. | ||
| Density: |
6.3 - 6.49, Average = 6.39 | ||
| Diaphaniety: |
Transparent to Translucent | ||
| Hardness: |
2-2.5 - Gypsum-Finger Nail | ||
| Luster: |
Adamantine | ||
| Streak: |
white | ||
Optical Properties of Chervetite |
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| Gladstone-Dale: |
CI meas= -0.135 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.137 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2194,KPDmeas= 0.2189,KC= 0.1929 |
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| Optical Data: |
Biaxial (-), b=2.2-2.6, 2V(Meas)=65-75. | ||
Calculated Properties of Chervetite |
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| Electron Density: |
relectron=5.42 gm/cc |
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| Fermion Index |
Fermion Index = 0.14625 Boson Index = 0.85375 |
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| Photoelectric: |
PEChervetite =1,199.27 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Chervetite is Not Radioactive |
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Chervetite Classification |
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| Dana Class: |
38.5.5.1 (38)Anhydrous Phosphates, etc | ||
| (38.5)with miscellaneous formulae | |||
| (38.5.5)Dana Group | |||
| Strunz Class: |
VII/A.20-30 VII - Phosphates, Arsenates and Vanadates | ||
| VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, waterfree divanadates [V2O7]4- | |||
| VII/A.20 - Ziesite - Chervetite series | |||
Other Chervetite 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 Chervetite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST 12 -École des Mines de Paris Search for Chervetite using: Visit our Advertisers for Chervetite : Translate Chervetite Mineral Data : Ask about Chervetite here : Print or Cut-and-Paste your Chervetite Specimen Label here :
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