Metavanuralite

 IMA-A 1970-003
Uranium 42.11.13.2
(Dana Classification Number)
(for images see Vanuralite) 7/E.11-20
(Strunz ID)

Property Data Remarks
Named for: Being the meta- form of Vanuralite, which is named for its Vanadium and Uranium content
Alternate
    Name(s):
  		•  
    Mineral Class:
    Phosphates, Arsenates and Vanadates
      Uranylphosphates and uranylvanadates with:
    [UO2]2+ - [PO4 | AsO4]3- and
    uranyl-group vanadates with [UO2]2+ - [V2O8]6-
        Tyuyamunite series
    		 
    Chemical
        Formula:    		 Al(UO2)2(VO4)2(OH) · 8H2O  
    Chemical
        Composition:
    Aluminum: (Al) 2.82%
    Hydrogen: (H) 1.79%
    Oxygen: (O) 35.07%
    Uranium: (U) 49.69%
    Vanadium: (V) 10.63%
    		by weight
    Molecular
        Weight:    		 958.04 daltons (amu)
    Specific
        Radioactivity:

    (All radiation is for a 1 gram, fully aged specimen)

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    8.8946 × 1004 2.40 × 10-06 1.24 124.42

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Triclinic
    Axial Ratios: a: 1.2393
    b: 1
    c: 1.2357
    Cell Dimensions: a: 10.46 Å
    b: 8.44 Å
    c: 10.43 Å
    Z: 2
    a: 75.88°
    b: 102.83°
    g: 90°
    V: 870.67 Å3
    DenCalc: 3.65
    H-M Symbol:  
    Space Group: P1- or P1
    X-Ray Diffraction:
      By Intensity ( I/Io )    		 (1): 9.92 Å
    (0.9): 3.155 Å
    (0.9): 4.174 Å
    		 
    Habit:
  • Microscopic, sugary appearing, crystals
    		•   
    Cleavage:
    [001] Perfect
    [010]  
    [100]  
    		 
    Fracture:    
    Moh's
        Hardness:    		 2  
    Density: 3.6 grams/cm3
    Color: Lemon yellow  
    Streak: Light to Pale yellow  
    Luster:    
    Diaphaneity: Translucent  
    Pleochroism:
    (x):  
    (y:)  
    (z:)  
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:  
    Short Wave:  
    		 
    Magnetism: Non-magnetic  
    Occurance:
  		•  
    Associated
        Minerals:

    Bariandite, 'Barite', Carnotite, Chervetite, Coffinite, Curienite, Dewindtite, Duttonite, Francevillite, Galena, Johannite, Karelianite, Kasolite, Lenoblite, Montroseite, Mounanaite, Nolanite, Pitchblende, Pyrite, Roscoelite, Schubnelite, Torbernite, Vanuralite, Wolsendorfite, Wulfenite

    Mineral   -   Both of the sites
    Mineral   -   > 50% of sites
    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Metavanuralite
    Locations:

    Extremely rare

    Metavanuralite Locations
    Notes:

    Strongly radioactive a- and b-particles, g-rays.

    Crystals are probably metamic.

    Stable at 20°C and 28-47% relative humidity.