Romanite

(A form of Dessauite-(Y))		 Not a valid mineral species
Uranium
(No Images) 4/X.00-00
(Strunz ID)

Property Data Remarks
Named for: Romania, the country in which it is found
Alternate
    Name(s):
  • Romanit
  • Romanita
  		•   
    Mineral Class: Oxides
      - Unclassified Strunz Oxides
        - Oxide    		  
    Chemical
        Formula:    		 (Fe+2,U,Pb)2(Ti,Fe+3)O4  
    Chemical
        Composition:
    Iron: (Fe) 22.18%
    Lead: (Pb) 11.35%
    Oxygen: (O) 17.53%
    Titanium: (Ti) 9.83%
    Uranium: (U) 39.11%
    		by weight
    Molecular
        Weight:    		 365.14 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    7.0012 × 1004 1.89 × 10-06 0.95 94.74

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Hexagonal (Trigonal)
    Cell Dimensions: a:   Å
    b:   Å
    c:   Å
    Z:  
    a:   °
    b:   °
    g:   °
    V:   Å3
    DenCalc:  
    H-M Symbol:  
    Space Group:  
    X-Ray Diffraction:
      By Intensity ( I/Io )    		 (0.9): 1.44 Å
    (0.9): 2.84 Å
    (0.85): 1.69 Å
    		 
    Habit:
  • Metamict
  • Tabular
  • Granular
    		•   
    Cleavage:
    [001]  
    [010]  
    [100]  
    		 
    Fracture: Conchoidal, Irregular  
    Moh's
        Hardness:    		 6.5 - 7  
    Density: 4.07 - 4.46 grams/cm3
    Color: Gray, Black  
    Streak:    
    Luster: Vitreous - Metallic  
    Diaphaneity: Opaque  
    Pleochroism:
    (x):  
    (y:)  
    (z:)  
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:  
    Short Wave:  
    		 
    Magnetism: Non-magnetic  
    Occurance:
  		•  
    Associated
        Minerals:

    Aegirine, Aenigmatite, Agardite-(Y), Albite, 'Allanite', Allanite-(Ce), Anatase, Anglesite, Arfvedsonite, Armalcolite, Armstrongite, Arsenic, Baryte, 'Bastnäsite', Bastnäsite-(Ce), Bazirite, Britholite-(Ce), Calcite, 'Calcium-Catapleiite', Carminite, Cerianite-(Ce), Ceriopyrochlore-(Ce), Cerussite, 'Columbite', Copper, Cornwallite, Elpidite, Fayalite, Fergusonite-(Y), Fergusonite-beta-(Y), Ferriallanite-(Ce), Ferrocolumbite, Fluorapatite, Fluorite, Galena, Genthelvite, Gittinsite, Gold, Hematite, Hingganite-(Ce), Hingganite-(Y), Ilmenite, Ilmenorutile, Ilvaite, Kainosite-(Y), Katophorite, Landauite, Lead, Löllingite, Magnetite, Microcline, Molybdenite, 'Monazite', Monazite-(Ce), Narsarsukite, Nontronite, Orthoclase, 'Parisite', Percleveite-(Ce), Plumbopyrochlore, Polylithionite, Prehnite, Pyrite, Pyrochlore, Quartz, Rutile, Senaite, Strontiopyrochlore, Sulphur, 'Synchysite', Synchysite-(Ce), Synchysite-(Y), Thorite, Tin, Titanite, Willemite, Wulfenite, Xenotime-(Y), Zircon

    Mineral   -   > 50% of sites
    Mineral   -   > 25% of sites
    Mineral   -   > 15% of sites
    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Romanite
    Locations:

    Extremely Rare

    Romanite Locations
    Notes:

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

    Crystals are probably metamic.