General Vanuralite Information
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Chemical Formula: |
Al(UO2)2(VO4)2(OH)·11(H2O) |
Composition: |
Molecular Weight = 1,012.09 gm |
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Uranium 47.04 % U 53.36 % UO2 |
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Aluminum 2.67 % Al 5.04 % Al2O3 |
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Vanadium 10.07 % V 17.97 % V2O5 |
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Hydrogen 2.29 % H 20.47 % H2O |
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Oxygen 37.94 % O |
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______ ______ |
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100.00 % 96.84 % = TOTAL OXIDE |
Empirical Formula: |
Al(UO2)2(VO4)2(OH)·11(H2O) |
IMA Status: |
Approved IMA 1963 |
Locality: |
Mounana mine, Franceville, Haute Ogooue, Gabon. Link to MinDat.org Location Data. |
Name Origin: |
Named for the composition (Vanadium, Uranium). |
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Vanuralite Image |
Images:
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Vanuralite
Comments: Massive, granular, yellow vanuralite.
Location: Mounana mine (Mouana), Franceville, Haut-Ogoou?, Gabon.
Scale: Picture size 5 mm.
© Paul M. Schumacher |
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Vanuralite Crystallography
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Axial Ratios: |
a:b:c =1.25:1:2.9052 |
Cell Dimensions: |
a = 10.55, b = 8.44, c = 24.52, Z = 4; beta = 103° V = 2,127.35 Den(Calc)= 3.16 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: A2/a |
X Ray Diffraction: |
By Intensity(I/Io): 11.98(1), 5.98(0.9), 3.795(0.8), |
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Physical Properties of Vanuralite
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Cleavage: |
[001] Perfect |
Color: |
Lemon. |
Density: |
3.62 |
Diaphaniety: |
Transparent |
Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
Hardness: |
2 - Gypsum |
Luster: |
Vitreous (Glassy) |
Streak: |
light yellow |
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Optical Properties of Vanuralite
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Gladstone-Dale: |
CI meas= -0.136 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.302 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2532,KPDmeas= 0.221,KC= 0.1945 |
Optical Data: |
Biaxial (-), a=1.65, b=1.85, g=1.9, bire=0.2500, 2V(Calc)=48, 2V(Meas)=44. |
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Calculated Properties of Vanuralite
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Electron Density: |
relectron=3.28 gm/cc note: rVanuralite =3.62 gm/cc. |
Fermion Index |
Fermion Index = 0.00382 Boson Index = 0.99618 |
Photoelectric: |
PEVanuralite =1,181.30 barns/electron U=PEVanuralite x relectron=3,870.32 barns/cc. |
Radioactivity: |
GRapi = 3,628,690.48 (Gamma Ray American Petroleum Institute Units)
Vanuralite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Estimated Maximum U.S. Postal Shipping Size
(10 mRem/hr limit, Unshielded 10 cm box)
8.38 ± 2.10 grams of pure Vanuralite .
Estimated Maximum U.S. Postal Shipping Size
(10 mRem/hr limit, Unshielded 100 cm box)
838.23 ±209.56 grams of pure Vanuralite .
Estimated Radioactivity from Vanuralite - very strong
Specimen Size Weight/Volume (Sphere) * |
Calculated Activity Bequerols (Bq) |
Calculated Activity Curies (Ci) |
Estimated Activity GR(api) |
Estimated Exposure (mRem**)/hr If Held in Hand For One Hour |
| 1000 gm / 8.08 cm |
84,196,355 |
2.28E-03 |
3,628,690.48 |
1,192.99 |
| 100 gm / 3.75 cm |
8,419,636 |
2.28E-04 |
362,869.05 |
119.30 |
| 10 gm / 1.74 cm |
841,964 |
2.28E-05 |
36,286.90 |
11.93 |
| 1 gm / 8.08 mm |
84,196 |
2.28E-06 |
3,628.69 |
1.19 |
| 0.1 gm / 3.75 mm |
8,420 |
2.28E-07 |
362.87 |
0.12 |
| 0.01 gm / 1.74 mm |
842 |
2.28E-08 |
36.29 |
0.01 |
| 0.001 gm / 0.81 mm |
84 |
2.28E-09 |
3.63 |
0.00 |
Weight of pure Vanuralite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.62 gm/cc.*
Goverment Estimate of Average Annual Exposure (
360 mRem)
**
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
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Vanuralite Classification
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Dana Class: |
42.11.13.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.11)where (AB)4 (XO4)3 Zq · x(H2O) |
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(42.11.13)Dana Group |
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42.11.13.1 Vanuralite Al(UO2)2(VO4)2(OH)·11(H2O) A2/a 2/m |
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42.11.13.2 Metavanuralite Al(UO2)2(VO4)2(OH)·8(H2O) P 1or P1 Tri |
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42.11.13.3 Threadgoldite Al(UO2)2(PO4)2(OH)·8(H2O) C 2/c 2/m |
Strunz Class: |
VII/E.11-10 VII - Phosphates, Arsenates and Vanadates |
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VII/E - Uranylphosphates and uranylvanadates with: [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-, uranyl-groupvanadates with [UO2]2+ - [V2O8]6- |
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VII/E.11 - Tyuyamunite series |
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VII/E.11-10 Vanuralite Al(UO2)2(VO4)2(OH)·11(H2O) A2/a 2/m |
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VII/E.11-20 Metavanuralite Al(UO2)2(VO4)2(OH)·8(H2O) P 1or P1 Tri |
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VII/E.11-30 Sengierite Cu2(UO2)2V2O8·6(H2O) P 21/a 2/m |
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VII/E.11-40 Strelkinite Na2(UO2)2V2O8·6(H2O) Pnmm,Pnm2 Ortho |
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VII/E.11-50 Carnotite K2(UO2)2V2O8·3(H2O) P 21/a 2/m |
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VII/E.11-60 Margaritasite (Cs,K,H3O)2(UO2)2V2O8·(H2O) P 21/a 2/m |
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VII/E.11-70 Vanuranylite? (H3O,Ba,Ca,K)1.6(UO2)2V2O8·4(H2O)(?) C 2/c ? 2/m |
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VII/E.11-80 Tyuyamunite Ca(UO2)2V2O8·5-8(H2O) Pnan 2/m 2/m 2/m |
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VII/E.11-90 Metatyuyamunite Ca(UO2)2V2O8·3(H2O) Pnam 2/m 2/m 2/m |
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VII/E.11-100 Francevillite (Ba,Pb)(UO2)2V2O8·5(H2O) Pcan 2/m 2/m 2/m |
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VII/E.11-110 Curienite Pb(UO2)2V2O8·5(H2O) Pcan 2/m 2/m 2/m |
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Other Vanuralite Information
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References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Vanuralite :
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 - Uranium Minerals
13 -École des Mines de Paris
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Print or Cut-and-Paste your Vanuralite Specimen Label here :
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Vanuralite
Al(UO2)2(VO4)2(OH)·11(H2O)
Dana No: 42.11.13.1 Strunz No: VII/E.11-10
Locality:
Notes:
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