Arsenuranylite

 IMA-GP
Uranium 42.4.9.1
(Dana Classification Number)
(No Images) 7/E.07-50
(Strunz ID)

Property Data Remarks
Named for: Its relationship to phosphuranylite, and its Arsenic 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:		 Ca(UO2)4(AsO4)2(OH)4 · 6H2O  
Chemical
    Composition:
Arsenic: (As) 9.52%
Calcium: (Ca) 2.55%
Hydrogen: (H) 1.02%
Oxygen: (O) 26.43%
Uranium: (U) 60.48%
by weight
Molecular
    Weight:		 1,574.15 daltons (amu)
Specific
    Radioactivity:

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

Specific Activity Dose Rate
Becquerels Curies  milliRems 
hour		  microSieverts 
hour
1.082 67 × 1005 2.93 × 10-06 1.460 146.01

Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
Crystalography:
System: Orthorhombic - Dipyramidal
Axial Ratios: a: 0.885
b: 1
c: 0.7912
Cell Dimensions: a: 15.4 Å
b: 17.4 Å
c: 13.768 Å
Z: 6
V: 3,689.27 Å3
DenCalc: 4.25
H-M Symbol: 2/m 2/m 2/m
Space Group: Bmmb
X-Ray Diffraction:
  By Intensity ( I/Io )		 (1): 3.85 Å
(1): 7.72 Å
(0.8): 8.41 Å
 
Habit:
  • Scaly
    		•   
    Cleavage:
    [001] Perfect
    [010]  
    [100]  
    		 
    Fracture:    
    Moh's
        Hardness:    		 2.5  
    Density: 4.25 grams/cm3
    Color: Orange to Orange-yellow  
    Streak: Light yellow  
    Luster:    
    Diaphaniety: Translucent  
    Pleochroism:
    (x):  
    (y:)  
    (z:)  
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:  
    Short Wave:  
    		 
    Magnetism: Non-magnetic  
    Occurance:
  • Oxidation zone of As-containing sulfide deposits
    		•   
    Associated
        Minerals:

    Arsenopyrite, Arsenuranospathite, Autunite, Barite, Becquerelite, Bergenite, Billietite, Boltwoodite, Brochantite, Calcite, Chalcocite, Chalcopyrite, Coffinite, Covellite, Curite, Dewindtite, Galena, Goethite, Hematite, Kasolite, 'Limonite', Malachite, Marcasite, Meta-Autunite, 'Meta-Uranocircite', Metaheinrichite, Metakahlerite, Metatorbernite, Metazeunerite, Nickeline, Novácekite, Phosphuranylite, Pyrite, Rutherfordine, Safflorite, Schoepite, Silver, Sklodowskite, Torbernite, Uraninite, Uranocircite, Uranophane, Uranophane-beta, Uranopilite, Uranospinite, Zeunerite

    Mineral   -   > 75% of sites
    Mineral   -   > 50% of sites
    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Arsenuranylite
    Localities:

    Very rare

    Arsenuranylite Localities
    Notes:

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

    Crystals are probably metamic.