General Vanalite Information
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Chemical Formula: |
NaAl8V10O38•30(H2O) |
Composition: |
Molecular Weight = 1,896.69 gm |
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Sodium 1.21 % Na 1.63 % Na2O |
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Aluminum 11.38 % Al 21.50 % Al2O3 |
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Vanadium 26.86 % V 47.95 % V2O5 |
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Hydrogen 3.19 % H 28.49 % H2O |
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Oxygen 57.36 % O |
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______ ______ |
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100.00 % 99.58 % = TOTAL OXIDE |
Empirical Formula: |
NaAl8V5+10O38•30(H2O) |
Environment: |
Encrusting joints and cavities in weathered shales. |
IMA Status: |
Approved IMA 1962 |
Locality: |
Prospect in the Kurumsak River valley, northwestern Kara-Tau Mountains, south Kazakhstan. Link to MinDat.org Location Data. |
Name Origin: |
Named for the VANadium and ALuminum in the composition. |
Name Pronunciation: |
Vanalite |
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Vanalite Image |
Images:
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Vanalite Crystallography
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Axial Ratios: |
a:b:c =1.1822:1:1.0242 |
Cell Dimensions: |
a = 12.618, b = 10.673, c = 10.932, Z = 1; beta = 95.22° V = 1,466.13 Den(Calc)= 2.15 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/m |
X Ray Diffraction: |
By Intensity(I/Io): 10.7(1), 8.52(0.4), 7.9(0.35), |
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Physical Properties of Vanalite
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Cleavage: |
{010} Perfect, {100} Perfect |
Color: |
Light yellow, Orange. |
Density: |
2.3 - 2.4, Average = 2.34 |
Luster: |
Vitreous - Waxy |
Streak: |
yellow |
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Optical Properties of Vanalite
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Gladstone-Dale: |
CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.093 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.336,KPDmeas= 0.3074,KC= 0.3075 Ncalc = 1.66 - 1.74 |
Optical Data: |
Biaxial (?), a=1.71, g=1.735, bire=0.0250 |
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Calculated Properties of Vanalite
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Electron Density: |
Bulk Density (Electron Density)=2.35 gm/cc note: Specific Gravity of Vanalite =2.35 gm/cc. |
Fermion Index: |
Fermion Index = 0.0009515666 Boson Index = 0.9990484334 |
Photoelectric: |
PEVanalite = 5.39 barns/electron U=PEVanalite x rElectron Density= 12.67 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Vanalite is Not Radioactive |
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Vanalite Classification
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Dana Class: |
47.04.02.01 (47)Vanadium Oxysalts |
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(47.04)(Hydrated Containing V++++ and V+++++) |
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(47.04.02)Dana Group |
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47.04.02.01 Vanalite NaAl8V10O38•30(H2O) P 2/m 2/m |
Strunz Class: |
04.HG.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.H - V[5,6] Vanadates |
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04.HG -Unclassified V oxides |
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04.HG.15 Vanalite NaAl8V10O38•30(H2O) P 2/m 2/m |
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Other Vanalite 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 Vanalite :
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
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Print or Cut-and-Paste your Vanalite Specimen Label here :
Vanalite
NaAl8V10O38•30(H2O)
Dana No: 47.04.02.01 Strunz No: 04.HG.15
Locality:
Notes:
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