Metavandendriesscheite

 IMA-GP
Uranium 5.8.1.2
(Dana Classification Number)
(for images see Vandendriesscheite) 4/H.07-30
(Strunz ID)

Property Data Remarks
Named for: The meta- form of Vandendriesscheite, named for Adrien Vandendriessche (1914-1940), Belgain mineralogist and geologist
Alternate
    Name(s):
  		•  
    Mineral Class:
    Oxides
      Uranyl ([UO2]+2) hydroxides and hydrates
        Fourmarierite - Masuyite series
    		 
    Chemical
        Formula:    		 PbU7O22 · nH2O     (n < 12)  
    Chemical
        Composition:
    Hydrogen: (H) 0.42%
    Lead: (Pb) 8.65%
    Oxygen: (O) 21.37%
    Uranium: (U) 69.56%
    		by weight
    Molecular
        Weight:    		 2,395.46 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    1.24506 × 1005 3.37 × 10-06 1.61 161.44

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Orthorhombic
    Axial Ratios: a: 0.3405
    b: 1
    c: 1.0488
    Cell Dimensions: a: 14.07 Å
    b: 41.31 Å
    c: 43.33 Å
    Z: 35
    V: 25,184.77 Å3
    DenCalc: 5.53
    H-M Symbol:  
    Space Group: Pmma, Pm2a
    X-Ray Diffraction:
      By Intensity ( I/Io )    		 (1): 3.61 Å
    (1): 7.25 Å
    (0.8): 3.17 Å
    (0.3): 2.52 Å
    (0.3): 3.53 Å
    (0.2): 2.03 Å
    (0.1): 4.53 Å
    		 
    Habit:
  • Prismatic
    		•   
    Cleavage:
    [001] Perfect
    [010]  
    [100]  
    		 
    Fracture:    
    Moh's
        Hardness:    		 3  
    Density: 5.45 grams/cm3
    Color: Yellow-orange, Orange, Amber  
    Streak:    
    Luster: Adamantine  
    Diaphaneity: Transparent to Translucent  
    Pleochroism:
    (x): Colorless
    (y:) Golden yellow
    (z:) Golden yellow
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:  
    Short Wave:  
    		 
    Magnetism: Non-magnetic  
    Occurance:
  • 'Gummite zone' of the uranium deposit
    		•   
    Associated
        Minerals:

    'Barite', Becquerelite, Bijvoetite-(Y), Billietite, Carrollite, Cattierite, Chernikovite, Cobaltoan Calcite, Comblainite, Cousinite, Cuprosklodowskite, Curienite, Curite, Dewindtite, Dumontite, Fourmarierite, Guilleminite, Gysinite-(Nd), Ianthinite, Kasolite, Lepersonnite-(Gd), Liebigite, Masuyite, Metaschoepite, Metastudtite, Metatorbernite, Oursinite, Paraschoepite, Parsonsite, Phosphuranylite, Phurcalite, Piretite, Platinum, Protasite, Richetite, Roubaultite, Rutherfordine, Saléeite, Sayrite, Schmitterite, Schoepite, Sengierite, Sharpite, Sklodowskite, Soddyite, Studtite, Torbernite, Umohoite, Urancalcarite, Uraninite, Uranophane, Vaesite, Vandenbrandeite, Vandendriesscheite, Wolsendorfite, Wyartite, Zippeite

    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Metavandendriesscheite
    Locations:

    Extremely rare

    Metavandendriesscheite Locations
    Notes:

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

    Crystals are probably metamic.