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Volborthite Mineral Data + |
General Volborthite Information |
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| Cu++3V+++++2O7(OH)2·2(H2O) | |||
| Molecular Weight = 474.56 gm | |||
| Vanadium 21.47 % V 38.33 % V2O5 | |||
| Copper 40.17 % Cu 50.29 % CuO | |||
| Hydrogen 1.27 % H 11.39 % H2O | |||
| Oxygen 37.09 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Cu3V5+2O7(OH)2·2(H2O) | |||
| Secondary mineral associated with U-V Colorado Plateau type deposits. | |||
| Valid Species (Pre-IMA) 1838 | |||
| Syssersk and Nizhne Taglisk, Ural Mountains, Russia. Link to MinDat.org Location Data. | |||
| Named for Alexander von Volborth (1800-1876), Russian paleontologist who first noted the mineral. | |||
| ICSD 63282 | |||
| PDF 46-1443 | |||
Volborthite Image | |||
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Volborthite Crystallography |
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| a:b:c =1.8052:1:1.2279 | |||
| a = 10.604, b = 5.874, c = 7.213, Z = 2; beta = 94.9° V = 447.64 Den(Calc)= 3.52 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m | |||
| By Intensity(I/Io): 7.26(1), 2.56(0.8), 2.87(0.8), | |||
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Mouse |
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Physical Properties of Volborthite |
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| [???] Perfect | |||
| Brownish yellow, Greenish yellow, Yellow, Yellow green, Light brown. | |||
| 3.5 | |||
| Translucent to Subtranslucent | |||
| Globular - Spherical, or nearly so, rounded forms (e.g. wavellite). | |||
| Scaly - Morphology like fish scales. | |||
| 3 - Calcite | |||
| Non-fluorescent. | |||
| Vitreous - Pearly | |||
| Nonmagnetic | |||
| light green | |||
Optical Properties of Volborthite |
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| CI meas= -0.167 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.161 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2955,KPDmeas= 0.2971,KC= 0.2545 |
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| Biaxial (-), a=2.01, b=2.04, g=2.07, bire=0.0600 | |||
Calculated Properties of Volborthite |
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relectron=3.37 gm/cc |
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| Fermion Index = 0.00071 Boson Index = 0.99929 |
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PEVolborthite = 21.84 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Volborthite is Not Radioactive |
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Volborthite Classification |
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| 40.3.10.1 (40)Hydrated Phosphates, etc | |||
| (40.3)where (A++)3 (XO4)2 · x(H2O) | |||
| (40.3.10)Dana Group | |||
| VII/D.24-10 VII - Phosphates, Arsenates and Vanadates | |||
| VII/D - Water-bearing phosphates with unfamiliar anions, cations of medium size: Cu, Zn, Mn, Al, Fe | |||
| VII/D.24 - Volborthite series | |||
Other Volborthite Information |
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| NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) | |||
| Links to other databases for Volborthite : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - Crocoite.com Mineral Locations 6 - EUROmin Project 7 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (UofA) 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 -Mineralienatlas (Deutsch) 14 -QUT Mineral Atlas 15 - WWW-MINCRYST 16 -École des Mines de Paris Search for Volborthite using: Visit our Advertisers for Volborthite : Translate Volborthite Mineral Data : Ask about Volborthite here : Print or Cut-and-Paste your Volborthite Specimen Label here :
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