Thorutite

 IMA-GP
Uranium
Thorium		 8.3.4.2
(Dana Classification Number)
(No Images) 4/D.22-10
(Strunz ID)

Property Data Remarks
Named for: Its Thorium and Titanium (Rutile) content
Alternate
    Name(s):
  		•  
    Mineral Class: Oxides & Hydroxides -
    - Thorutite - Orthobrannerite series    		  
    Chemical
        Formula:    		 (Th,U,Ca)Ti2(O,OH)6  
    Chemical
        Composition:
    Calcium: (Ca) 2.05%
    Hydrogen: (H) 0.77%
    Oxygen: (O) 24.56%
    Titanium: (Ti) 24.50%
    Thorium: (Th) 23.75%
    Uranium: (U) 24.36%
    		by weight
    Molecular
        Weight:    		 390.82 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    5.4247 × 1004 1.47 × 10-06 0.75 74.67

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Monoclinic - Prismatic
    Axial Ratios: a:b:c =2.5685:1:1.8399
    Cell Dimensions: a = 9.822, b = 3.824, c = 7.036, Z = 2; beta = 118.83° V = 231.51 Den(Calc) = 5.61
    H-M Symbol: 2/m
    Space Group: C2/m
    X Ray Diffraction: By Intensity(I/Io): 3.17(1) 1.695(0.85) 1.728(0.85)
    		 
    Habit:
  		•  
    Cleavage: Weak to none  
    Fracture: Conchoidal  
    Moh's
        Hardness:    		 4.5 - 5.5 - 6.0  
    Density: 5.82 grams/cm3
    Color: Black  
    Streak: Light to Pale brown  
    Luster: Resinous  
    Diaphaneity: Translucent  
    Pleochroism:
    (x):
    (y:)
    (z:)
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:
    Short Wave:
    		 
    Magnetism: Non-magnetic  
    Occurance:
  • In microcline veins cutting a nephelene syenite.
  		•   
    Associated
        Minerals:

    Actinolite, Aegirine, Albite, Allanite-(Ce), Analcime, Anatase, Andradite, Anglesite, Aragonite, Arsenopyrite, Barite, Brookite, Calcite, Chalcopyrite, Chamosite, Chloritoid, Chlorophoenicite, Chondrodite, Diopside, Dolomite, Flinkite, Fluorapatite, Franklinite, Franklinphilite, Friedelite, Gahnite, Galena, Genthelvite, Goethite, Graphite, Hematite, Hemimorphite, Hendricksite, 'Heulandite', Ilmenite, Jarosewichite, Johnbaumite, Leucophoenicite, Lizardite, Löllingite, Magnetite, Marcasite, Microcline, Molybdenite, Monazite-(Ce), Muscovite, Natrolite, Petedunnite, Phlogopite, Powellite, Prehnite, Pyrite, Pyrochroite, Quartz, Rhodochrosite, Rhodonite, Romeite, Rutile, Smithsonite, Spinel, 'Stilbite', Strontianite, Synchysite-(Ce), Talc, Tephroite, Thorite, Titanite, Tremolite, Uraninite, Uvite, Willemite, Yeatmanite, Zincite, Zircon, Zirconolite, Zirkelite

    Mineral   -   > 57% of sites
    Mineral   -   > 43% of sites
    Mineral   -   > 29% of sites
    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Thorutite
    Locations:

    Very rare

    Thorutite Locations
    Notes:

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