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Vanuralite Mineral Data

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General Vanuralite Information

Help on Chemical  Formula: Chemical Formula: Al(UO2)2(VO4)2(OH)•11(H2O)
Help on Composition: Composition: Molecular Weight = 1,012.09 gm
   Uranium   47.04 %  U    53.36 % UO2
   Aluminum   2.67 %  Al    5.04 % Al2O3
   Vanadium  10.07 %  V    17.97 % V2O5
   Hydrogen   2.29 %  H    20.47 % H2O
   Oxygen    37.94 %  O
            ______        ______ 
            100.00 %       96.84 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al(UO2)2(VO4)2(OH)•11(H2O)
Help on IMA Status: IMA Status: Approved IMA 1963
Help on Locality: Locality: Mounana mine, Franceville, Haute Ogooue, Gabon. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition (Vanadium, Uranium).
Help on Name Pronunciation: Name Pronunciation: Vanuralite + Pronunciation Say VANURALITE
 

Vanuralite Image

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  Metavanuralite   Vanuralite

Comments: Bright yellow crystals of metavanuralite. Unless sealed in glass, all specimens of vanuralite change to metavanuralite.
Location: Mounana mine (Mouana), Franceville, Haut-Ogooue, Gabon. Scale: See Image.
© Paul M. Schumacher

Vanuralite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.25:1:2.9052
Help on Cell Dimensions: Cell Dimensions: a = 10.55, b = 8.44, c = 24.52, Z = 4; beta = 103° V = 2,127.35 Den(Calc)= 3.16
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: A2/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 11.98(1), 5.98(0.9), 3.795(0.8),
 

Physical Properties of Vanuralite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Lemon.
Help on Density: Density: 3.62
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light yellow
 

Optical Properties of Vanuralite

Help on Gladstone-Dale: 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
Ncalc = 1.61 - 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.65, b=1.85, g=1.9, bire=0.2500, 2V(Calc)=48, 2V(Meas)=44.
 

Calculated Properties of Vanuralite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.28 gm/cc
note: Specific Gravity of Vanuralite =3.62 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0038238813
Boson Index = 0.9961761187
Help on Photoelectric: Photoelectric: PEVanuralite =1,181.30 barns/electron
U=PEVanuralite x relectron=3,870.32 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,628,692.33 (Gamma Ray American Petroleum Institute Units)
Concentration of Vanuralite per GRapi unit = 275.58 (PPB)

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 84,196,365 2.28E-03 3,628,692.33 1,192.99
100 gm / 3.75 cm 8,419,637 2.28E-04 362,869.23 119.30
10 gm / 1.74 cm 841,964 2.28E-05 36,286.92 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
 

Vanuralite Classification

Help on  Dana Class: Dana Class: 42.11.13.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.13)Vanuralite Group
 
42.11.13.01 Vanuralite Al(UO2)2(VO4)2(OH)•11(H2O) A2/a 2/m
 
42.11.13.02 Metavanuralite Al(UO2)2(VO4)2(OH)•8(H2O) P 1or P1 Tri
 
42.11.13.03 Threadgoldite Al(UO2)2(PO4)2(OH)•8(H2O) C 2/c 2/m
 
42.11.13.04 Chistyakovaite-(Y)! Al(UO2)2(AsO4)2(F,OH)•6.5H2O P 2/m, P 2 or Pm Mono
Help on  Strunz Class: Strunz Class: 04.HB.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.H - V[5,6] Vanadates
  04.HB -Uranyl Sorovanadates
 
04.HB.20 Metavanuralite Al(UO2)2(VO4)2(OH)•8(H2O) P 1or P1 Tri
 
04.HB.20 Vanuralite Al(UO2)2(VO4)2(OH)•11(H2O) A2/a 2/m
 

Other Vanuralite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Vanuralite :
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
15 - Uranium Minerals

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Print or Cut-and-Paste your Vanuralite Specimen Label here :

Vanuralite

Al(UO2)2(VO4)2(OH)•11(H2O)
Dana No: 42.11.13.01 Strunz No: 04.HB.20
Locality:

 

Notes:

 

 
   
 


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