Uranosilite

 IMA-A 1981-066
Uranium 53.3.3.2
(Dana Classification Number)
(No Images) 8/B.35-10
(Strunz ID)

Property Data Remarks
Named for: Its Uranium and Silica content
Alternate
    Name(s):
  		•  
    Mineral Class: Nesosubsilicates -
    - Uranosilite series    		  
    Chemical
        Formula:    		 (UO3)·(SiO2)7  
    Chemical
        Composition:
    Oxygen: (O) 38.49%
    Silicon: (Si) 27.82%
    Uranium: (U) 33.69%
    		by weight
    Molecular
        Weight:    		 706.62 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    6.0297 × 1004 1.63 × 10-06 0.87 87.10

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Orthorhombic - Disphenoidal
    Axial Ratios: a:b:c = 0.7901:1:0.8739
    Cell Dimensions: a = 11.6, b = 14.68, c = 12.83, Z = 6; V = 2,184.80 Den(Calc)= 3.22
    H-M Symbol: 2 2 2
    Space Group: P22121
    X Ray Diffraction: By Intensity(I/Io): 7.3(1) 6.19(0.9) 11.58(0.9)
    		 
    Habit:
  • Acicular
  		•   
    Cleavage: None  
    Fracture:    
    Moh's
        Hardness:    		    
    Density: 3.25 grams/cm3
    Color: Yellowish white  
    Streak: White  
    Luster: Vitreous  
    Diaphaneity:    
    Pleochroism:
    (x):
    (y:)
    (z:)
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:
    Short Wave:
    		 
    Magnetism: Non-magnetic  
    Occurance:
  		•  
    Associated
        Minerals:

    Agardite-(Ce), Arsenopyrite, Arsenuranospathite, Arsenuranylite, Autunite, Barite, 'Barium-Uranophane', Bassetite, Becquerelite, Bergenite, Billietite, Bismuth, Bornite, Calcite, Chalcocite, Chalcopyrite, Chrysocolla, Coffinite, Cuprosklodowskite, Curite, Dewindtite, Dolomite, Fluorite, Galena, Gold var: Electrum, Gypsum var: Selenite, Hematite, Ianthinite, Johannite, Joliotite, Kahlerite, Kasolite, Liebigite, Malachite, Marcasite, Meta-Autunite, 'Meta-uranocircite', Meta-uranopilite, Metaheinrichite, Metakahlerite, Metastudtite, Metatorbernite, Metazeunerite, Nickeline, Novácekite, Phosphuranylite, Pyrite, Pyrrhotite, Quartz, Rutherfordine, Saléeite, Schoepite, Selenium, Silver, Sklodowskite, Soddyite, Sodium-Zippeite, Studtite, Torbernite, Uraninite, Uranocircite, Uranophane, Uranophane-beta, Uranopilite, Uranospathite, Uranospinite, Uranotungstite, Vandendriesscheite, Vanmeersscheite, Weeksite, Wolsendorfite, Zeunerite, Zippeite

    Minerals   -   Uranium & Thorium
    mineral links

    		These are some of the minerals known to be found with Uranosilite
    Locations:

    Extremely rare

    Uranosilite Locations
    Notes:

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

    Crystals are probably metamic.