Cousinite

 IMA-GP
Uranium 49.3.2.1
(Dana Classification Number)
(No Images) 6/G.06-30
(Strunz ID)

Property Data Remarks
Named for: Jules Cousin (1884-1965), Belgian, president of Union Miniere du Haut Katanga
Alternate
    Name(s):
  		•  
    Mineral Class:
    Sulfates,Chromates,Molybdates and Tungstates
      Uranylmolybdates with
    [UO2]4+ - [MoO4]2-
        Deloryite - Iriginite series
    		 
    Chemical
        Formula:    		 MgU2Mo2O13 · 6H2O (?)  
    Chemical
        Composition:
    Hydrogen: (H) 1.20%
    Magnesium: (Mg) 2.41%
    Molybdenum: (Mo) 19.03%
    Oxygen: (O) 30.15%
    Uranium: (U) 47.21%
    		by weight
    Molecular
        Weight:    		 1,008.33 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    8.4511 × 1004 2.28 × 10-06 1.17 11.65

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Monoclinic
    Axial Ratios: a:  
    b:  
    c:  
    Cell Dimensions: a:   Å
    b:   Å
    c:   Å
    Z:  
    V:   Å3
    DenCalc:  
    H-M Symbol:  
    Space Group:  
    X-Ray Diffraction:
      By Intensity ( I/Io )    		 (1):   Å
    (0.0):   Å
    (0.0):   Å
    		 
    Habit:
  • Bladed - Aggregates of thin lath-like crystals
    		•   
    Cleavage:
    [001]  
    [010]  
    [100]  
    		 
    Fracture:    
    Moh's
        Hardness:    		    
    Density:   grams/cm3
    Color: Black  
    Streak:    
    Luster: Vitreous  
    Diaphaneity:    
    Pleochroism:
    (x):  
    (y:)  
    (z:)  
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:  
    Short Wave:  
    		 
    Magnetism: Non-magnetic  
    Occurance:
  • Alteration product of ores containing uraninite and molybdenite
    		•   
    Associated
        Minerals:

    Barite, Becquerelite, Bijvoetite-(Y), Billietite, Calcite, Carrollite, Cattierite, Chernikovite, Cobaltoan Calcite, Comblainite, Cuprosklodowskite, Curienite, Curite, Dewindtite, Dumontite, Fourmarierite, Guilleminite, Gysinite-(Nd), Ianthinite, Kasolite, Lepersonnite-(Gd), Liebigite, Masuyite, Metaschoepite, Metastudtite, Metatorbernite, Metavandendriesscheite, 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 Cousinite
    Localities:

    Extremely rare

    Cousinite Localities
    Notes:

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

    Crystals are probably metamic.