Sedovite

 IMA-A
Uranium 48.4.1.1
(Dana Classification Number)
(No Images) 6/G.04-10
(Strunz ID)

Property Data Remarks
Named for: Georgii Yakolevich Sedov (1877-1914), Russian polar investigator
Alternate
    Name(s):
  		•  
    Mineral Class:
    Sulfates,Chromates,Molybdates and Tungstates
      Uranylmolybdates with [UO2]+2 - [MoO4]-2
        Sedovite series
    		 
    Chemical
        Formula:    		 U(MoO4)2 Uranium Molybdate
    Chemical
        Composition:
    Molybdenum: (Mo) 34.39%
    Oxygen: (O) 22.94%
    Uranium: (U) 42.66%
    		by weight
    Molecular
        Weight:    		 557.90 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    7.6370 × 1004 2.06 × 10-06 1.03 102.87

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Orthorhombic
    Axial Ratios: a: 0.3032
    b: 1
    c: 0.5794
    Cell Dimensions: a: 3.36 Å
    b: 11.08 Å
    c: 6.42 Å
    Z: 1
    V: 239.01 Å3
    DenCalc: 3.88
    H-M Symbol:  
    Space Group:  
    X-Ray Diffraction:
      By Intensity ( I/Io )    		 (1): 3.193 Å
    (0.9): 3.37 Å
    (0.9): 11.04 Å
    		 
    Habit:
  • Radial
  • Acicular
  • Aggregates
    		•   
    Cleavage:
    [???] Good
    		 
    Fracture:    
    Moh's
        Hardness:    		 3  
    Density: 4.2 grams/cm3
    Color: Reddish brown  
    Streak: Red brown  
    Luster: Sub-metallic  
    Diaphaneity: Subopaque  
    Pleochroism:
    (x):  
    (y:)  
    (z:)  
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:  
    Short Wave:  
    		 
    Magnetism: Non-magnetic  
    Occurance:
  • Supergene zone of a Uranium-Molybdenum deposit
    		•   
    Associated
        Minerals:

    Autunite, Barite, Calcurmolite, Gypsum, Iriginite, Molybdenite, Mourite, Phosphuranylite, Powellite, Pyrite, Umohoite, Wulfenite

    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Sedovite
    Locations:

    Extremely rare

    Sedovite Locations
    Notes:

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

    Crystals are probably metamic.