Mineralogy Database

Metavanuralite Mineral Data

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General Metavanuralite Information

Help on Chemical  Formula: Chemical Formula: Al(UO2)2(VO4)2(OH)•8(H2O)
Help on Composition: Composition: Molecular Weight = 958.04 gm
   Uranium   49.69 %  U    56.37 % UO2
   Aluminum   2.82 %  Al    5.32 % Al2O3
   Vanadium  10.63 %  V    18.98 % V2O5
   Hydrogen   1.79 %  H    15.98 % H2O
   Oxygen    35.07 %  O
            ______        ______ 
            100.00 %       96.66 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al(UO2)2(VO4)2(OH)•8(H2O)
Help on Environment: Environment: Stable at 20 deg C and 28-47% relative humidity.
Help on IMA Status: IMA Status: Approved IMA 1970
Help on Locality: Locality: Mounana mine, Franceville, Haut Ogooue, Gabon. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the lower hydrate of vanuralite.
Help on Name Pronunciation: Name Pronunciation: Metavanuralite + Pronunciation Say METAVANURALITE
 

Metavanuralite 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

Metavanuralite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.2393:1:1.2357
Help on Cell Dimensions: Cell Dimensions: a = 10.46, b = 8.44, c = 10.43, Z = 2; alpha = 75.88°, beta = 102.83°, gamma = 90° V = 870.67 Den(Calc)= 3.65
Help on Crystal System: Crystal System: Triclinic Space Group: P 1or P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.92(1), 3.155(0.9), 4.174(0.9),
 

Physical Properties of Metavanuralite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Lemon.
Help on Density: Density: 3.6
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 2 - Gypsum
Help on Streak: Streak: light yellow
 

Optical Properties of Metavanuralite

Help on Optical Data: Optical Data: NCalc= 1.68 - from Gladstone-Dale relationship (KC = 0.1863) where Ncalc=Dcalc*KC+1
NCalc= 1.67 - from Gladstone-Dale relationship (KC = 0.1863) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Metavanuralite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.27 gm/cc
note: Specific Gravity of Metavanuralite =3.66 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0040146016
Boson Index = 0.9959853984
Help on Photoelectric: Photoelectric: PEMetavanuralite =1,264.08 barns/electron
U=PEMetavanuralite x relectron=4,133.75 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,784,387.71 (Gamma Ray American Petroleum Institute Units)
Concentration of Metavanuralite per GRapi unit = 264.24 (PPB)

Metavanuralite 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) 8.04 ± 2.01 grams of pure Metavanuralite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 803.74 ±200.94 grams of pure Metavanuralite .

Estimated Radioactivity from Metavanuralite - 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 / 8.05 cm 88,946,105 2.40E-03 3,784,387.71 1,244.18
100 gm / 3.74 cm 8,894,611 2.40E-04 378,438.77 124.42
10 gm / 1.73 cm 889,461 2.40E-05 37,843.88 12.44
1 gm / 8.05 mm 88,946 2.40E-06 3,784.39 1.24
0.1 gm / 3.74 mm 8,895 2.40E-07 378.44 0.12
0.01 gm / 1.73 mm 889 2.40E-08 37.84 0.01
0.001 gm / 0.81 mm 89 2.40E-09 3.78 0.00

Weight of pure Metavanuralite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.66 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
 

Metavanuralite Classification

Help on  Dana Class: Dana Class: 42.11.13.02 (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 Metavanuralite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Metavanuralite :
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 Metavanuralite Specimen Label here :

Metavanuralite

Al(UO2)2(VO4)2(OH)•8(H2O)
Dana No: 42.11.13.02 Strunz No: 04.HB.20
Locality:

 

Notes:

 

 
   
 


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