Phuralumite

 IMA-A 1978-044
Uranium 42.4.6.1
(Dana Classification Number)
(No Images) 7/E.07-10
(Strunz ID)

Property Data Remarks
Named for: Its Phosphorus, Uranium and Aluminum content.
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:    		 Al2(UO2)3(PO4)2(OH)6 · 10-13H2O  
    Chemical
        Composition:
    Aluminum: (Al) 4.04%
    Hydrogen: (H) 1.96%
    Oxygen: (O) 35.92%
    Phosphorus: (P) 4.64%
    Uranium: (U) 53.44%
    		by weight
    Molecular
        Weight:    		 1,336.19 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    9.5661 × 1004 2.59 × 10-06 1.34 134.05

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Monoclinic - Prismatic
    Axial Ratios: a: 0.6671
    b: 1
    c: 0.4511
    Cell Dimensions: a: 13.836 Å
    b: 20.918 Å
    c: 9.428 Å
    Z: 4
    b: 112.44°
    V: 2,522.05 Å3
    DenCalc: 3.52
    H-M Symbol: 2/m
    Space Group: P21/a
    X-Ray Diffraction:
      By Intensity ( I/Io )    		 (1): 10.4 Å
    (0.8): 3.08 Å
    (0.7): 5.17 Å
    		 
    Habit:
  • Prismatic
    		•   
    Cleavage:
    [???] Perfect
    		 
    Fracture:    
    Moh's
        Hardness:    		 3  
    Density: 3.5 grams/cm3
    Color: Lemon yellow  
    Streak: Yellow white  
    Luster: Vitreous  
    Diaphaneity: Transparent  
    Pleochroism:
    (x):  
    (y:)  
    (z:)  
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:  
    Short Wave:  
    		 
    Magnetism: Non-magnetic  
    Occurance:
  • Secondary mineral found in beryl-coloumbite pegmatites, associated with other Uranium and Aluminum bearing phosphates
    		•   
    Associated
        Minerals:

    Althupite, Amblygonite, Anatase, Arsenopyrite, Arsenuranospathite, Bassetite, Becquerelite, Beryl, Billietite, Bismuth, Bismuthinite, 'Bursaite', Calcite, Cerussite, Chalcopyrite, Clinochlore, 'Columbite', Compreignacite, Copper, Dewindtite, Dumontite, Eylettersite, Fourmarierite, Furongite, Galena, Hematite, Kamitugaite, Kasolite, Ktenasite, Laitakarite, Lepidocrocite, Lusungite, Malachite, Marcasite, Marthozite, Masuyite, Meta-Autunite, Metakahlerite, Metatorbernite, Metavanmeersscheite, Montebrasite, 'Moreauite', Mundite, Novácekite, Phosphuranylite, Plumbojarosite, Plumbomicrolite, Pyrite, Quartz, Rabejacite, Ranunculite, Rutherfordine, Rutile, Saléeite, Sphalerite, Studtite, Threadgoldite, Triangulite, Upalite, Uraninite, Uranophane, Uranopilite, Uranospinite, Vandendriesscheite, Vanmeersscheite, Weibullite, Zeunerite, Zippeite

    Mineral   -   both of the sites
    Mineral   -   one of the sites
    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Phuralumite
    Locations:

    Extremely rare

    Phuralumite Locations
    Notes:

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

    Crystals are probably metamic.