Kivuite

 IMA- (pending)
(possibly discredited)
Uranium
Thorium		 42.4.9.3
(Dana Classification Number)
(No Images) 7/E.07-120
(Strunz ID)

Property Data Remarks
Named for: Kobokobo pegmatite, Kivu, Zaire, its type location
Alternate
    Name(s):
  		•  
    Mineral Class:
    Phosphates, Arsenates and Vanadates
      Uranylphosphates and uranylvanadates with
    [UO2]+2 - [PO4 | AsO4]-3 and
    [UO2]+2 - [V2O8]-6
        Phosphuranylite series
    		 
    Chemical
        Formula:    		 (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8 · 7H2O  
    Chemical
        Composition:
    Calcium: (Ca) 0.70%
    Hydrogen: (H) 1.42%
    Lead: (Pb) 1.21%
    Oxygen: (O) 29.07%
    Phosphorus: (P) 3.63%
    Thorium: (Th) 8.16%
    Uranium: (U) 55.80%
    		by weight
    Molecular
        Weight:    		 1,706.20 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    1.03543 × 1005 2.80 × 10-06 1.40 140.27

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Orthorhombic
    Axial Ratios: a: 0.9211
    b: 1
    c: 0.7981
    Cell Dimensions: a: 15.88 Å
    b: 17.24 Å
    c: 13.76 Å
    Z: 6
    V: 3,767.09 Å3
    DenCalc: 4.51
    H-M Symbol:  
    Space Group:  
    X-Ray Diffraction:
      By Intensity ( I/Io )    		 (1): 10.3 Å
    (0.9): 7.96 Å
    (0.8): 2.87 Å
    (0.8): 3.08 Å
    (0.6): 3.86 Å
    (0.6): 3.94 Å
    (0.6): 4.43 Å
    (0.6): 5.88 Å
    		 
    Habit:
  • Earthy
  • Platy
  • Aggregates
    		•   
    Cleavage:
    [001]  
    [010]  
    [100]  
    		 
    Fracture:    
    Moh's
        Hardness:    		 2 - 3  
    Density:   grams/cm3
    Color: Yellow  
    Streak: Light yellow  
    Luster:    
    Diaphaneity:    
    Pleochroism:
    (x): Colorless
    (y:) Greenish yellow
    (z:) Greenish yellow
    		 
    Ultra Violet
        Fluorescence:    		 Non-fluorescent  
    Magnetism: Non-magnetic  
    Occurance:
  		•  
    Associated
        Minerals:

    Albite var: Clevelandite, Almandine, 'Apatite', Arsenopyrite, Autunite, Beryl var: Goshenite, Beryllonite, Biotite, Bismuth, Brazilianite, Cassiterite, Chalcopyrite, Chrysoberyl, Elbaite, Eosphorite, Fairfieldite, Ferrostrunzite, Fluorapatite, Fluorite, Fourmarierite, Hematite, Kaolinite, Löllingite, Meta-Autunite, Metatorbernite, Microcline, Microlite, Muscovite, Opal, Parsonsite, Phosphuranylite, Pyrite, Quartz, Quartz var: Rose Quartz, Renardite, Rhodochrosite, Rutherfordine, Rutile, Schorl, Siderite, Sphalerite, Spodumene, Torbernite, Uralolite, Uraninite, Uranophane, Uranophane-beta, Vandendriesscheite, Vanmeersscheite, Vivianite, Wodginite, Zircon

    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Kivuite
    Localities:

    Extremely rare

    Kivuite Localities
    Notes:

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

    Crystals are probably metamic.