Swamboite

 IMA-A 1981-008
Uranium 53.3.1.8
(Dana Classification Number)
(Images) 8/B.36-20
(Strunz ID)

Property Data Remarks
Named for: Swambo, Katanga, Congo (Zaïre), its type locality
Alternate
    Name(s):
  		•  
    Mineral Class:
    Silicates
      Nesosilicates
    "Insel" silicates with anions unfamiliar to tetraheders.
    Uranyl-"Insel" silicates with [UO2]2+ - [SiO4]-4
        Soddyite - Swamboite series
    		 
    Chemical
        Formula:    		 U+6H6(UO2)6(SiO4)6 · 30H2O  
    Chemical
        Composition:
    Hydrogen: (H) 2.25%
    Oxygen: (O) 35.71%
    Silicon: (Si) 5.70%
    Uranium: (U) 56.34%
    		by weight
    Molecular
        Weight:    		 2,957.20 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    1.00856 × 1005 2.73 × 10-06 1.41 141.17

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Monoclinic - Prismatic
    Axial Ratios: a: 0.84
    b: 1
    c: 0.958
    Cell Dimensions: a: 17.64 Å
    b: 21 Å
    c: 20.12 Å
    Z: 6
    b: 103.4°
    V: 7,250.34 Å3
    DenCalc: 4.06
    H-M Symbol: 2/m
    Space Group: P21/a
    X-Ray Diffraction:
      By Intensity ( I/Io )    		 (1): 8.67 Å
    (0.8): 4.32 Å
    (0.8): 4.76 Å
    		 
    Habit:
  • Acicular
    		•   
    Cleavage:
    [201] Good
    [010]  
    [100]  
    		 
    Fracture:    
    Moh's
        Hardness:    		 2.5  
    Density: 4 grams/cm3
    Color: Pale yellow  
    Streak: White  
    Luster: Vitreous  
    Diaphaneity: Transparent to Translucent  
    Pleochroism:
    (x): Colorless
    (y:) Pale yellow
    (z:) Pale yellow
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:  
    Short Wave:  
    		 
    Magnetism: Non-magnetic  
    Occurance:
  • Alteration product of other uranium minerals
    		•   
    Associated
        Minerals:

    Allophane, Alunite, Anhydrite, Antlerite, Asbolane, Azurite, Barite, Bayleyite, Becquerelite, Bieberite, Billietite, Birnessite, Blatonite, Boltwoodite, Boothite, Bornite, Brochantite, Carbonate-cyanotrichite, Carnotite, Chalcanthite, Chalcocite, Chalcopyrite, Coconinoite, Compreignacite, Copper, Covellite, Cuprite, Cuprosklodowskite, Curite, Dewindtite, Epsomite, Erythrite, Galena, Gersdorffite, Goethite, Greenockite, Gypsum, Halotrichite, Hematite, Hydrombobomkulite, Hydronium jarosite, Ilsemannite, Jarosite, Johannite, Kasolite, Lepidocrocite, 'Limonite', Magnetite, Malachite, Marcasite, Mbobomkulite, Meta-Autunite, Metarossite, Metaschoepite, Metatorbernite, Metavoltine, Metazeunerite, Microcline, Oswaldpeetersite, Phosphuranylite, Phurcalite, Pickeringite, Pitchblende, 'Psilomelane', Pyrite, Quartz var: Chalcedony, Rabbittite, Rossite, Rutherfordine, Römerite, Sabugalite, Schoepite, Schröckingerite, Sepiolite, Serpierite, Siderotil, Sklodowskite, Skutterudite var: Smaltite, Smithsonite, Soddyite, Sodium-Zippeite, Sphalerite, Studtite, Sulphur, Szomolnokite, Torbernite, 'Tourmaline Group', Uraninite, Uranophane, Uranopilite, Vandenbrandeite, Voglite, Zeunerite, Zippeite

    Mineral   -   > 33% of sites
    Mineral   -   > 67% of sites
    Mineral   -   > 100% of sites
    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Swamboite
    Locations:

    Extremely rare

    Swamboite Locations
    Notes:

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

    Crystals are probably metamict.

    Swamboite Images

    Specimen Top
    (001a) (001b) (001c) (001d)
    White Canyon mining district, San Juan Co., Colorado, U.S.A.

    Specimen Notes

    Occurrence -  

     

    Crystals -  

     

    Appearence -  

    Diaphaniety -

    Luster -

     

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    Specimen Physical Properties
    Size   cm   cm   cm
    Weight: x grams    
    g-Radiation Level:   cmp   msieverts background: 20 cpm