Uvanite

 IMA-GP
Uranium 47.4.5.1
(Dana Classification Number)
(No Images) 4/G.05-20
(Strunz ID)

Property Data Remarks
Named for: Its Uranium and Vanadium content
Alternate
    Name(s):
  		• Resembles Rauvite
    Mineral Class:
    Oxides
      Vanadium oxides (with V+4/+5),
    Appendix to Vanadates: Unclassified Vanadates
        Unclassified Vanadates, Namibite
    		 
    Chemical
        Formula:    		 U+62V+56O21 · 15H2O  
    Chemical
        Composition:
    Hydrogen: (H) 2.18%
    Oxygen: (O) 41.50%
    Uranium: (U) 34.30%
    Vanadium: (V) 22.02%
    		by weight
    Molecular
        Weight:    		 1,387.92 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    6.1397 × 1004 1.66 × 10-06 0.89 88.65

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Orthorhombic
    Axial Ratios: a:b:c = ::
    Cell Dimensions: a=, b=, c=, Z=; V= Den(Calc)=
    H-M Symbol:
    Space Group:
    X Ray Diffraction: By Intensity(I/Io): 2.94(1) 1.71(0.9) 2.24(0.8)
    		 
    Habit:
  • Granular
  		•   
    Cleavage:
    [??? - pinachoidal] Good
    [??? - pinachoidal] Good
    		 
    Fracture:    
    Moh's
        Hardness:    		    
    Density:   grams/cm3
    Color: Brownish yellow  
    Streak: Light or Pale yellow  
    Luster:    
    Diaphaneity: Translucent  
    Pleochroism:
    (x): Light brown
    (y:) Dark brown
    (z:) Yellow green
    		 
    Ultra Violet
        Fluorescence:    		 Non-fluorescent  
    Magnetism: Non-magnetic  
    Occurance:
  • Asphaltic sandstone of the Shiniarump member of the Chinle formation
  		•   
    Associated
        Minerals:

    Carnotite, Gypsum, Metatorbernite, Pyrite, Rauvite, Sodium-Zippeite, Sulphur

    Mineral   -   all sites
    Mineral   -   > 65% of sites
    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Uvanite
    Locations:

    Very rare

    Uvanite Locations
    Notes:

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

    Crystals are probably metamic.

    Insoluble in water, soluble in Ammonium Carbonate solution.