Arsenuranospathite

 IMA-A
Uranium 40.2a.23.1
(Dana Classification Number)
(No Images) 7/E.04-20
(Strunz ID)

Property Data Remarks
Named for: Its Arsenic and Uranium content, and the Greek for sphere, in allusion to its botryoidal cluster forms
Alternate
    Name(s):
 
Mineral Class:
Phosphates, Arsenates, Vanadates
  Uranylphosphates and uranylvanadates with
[UO2]2+ - [PO4 | AsO4]3- and
[UO2]2+ - [V2O8]6-
    Uranospathite - Arsenuranospathite series
 
Chemical
    Formula:		 HAl(UO2)4(AsO4)4 · 40H2O  
Chemical
    Composition:
Aluminum: (Al) 1.13%
Arsenic: (Ar) 12.57%
Hydrogen: (H) 3.42%
Oxygen: (O) 42.94%
Uranium: (U) 39.93%
by weight
Molecular
    Weight:		 2,384.39 daltons (amu)
Specific
    Radioactivity:

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

Specific Activity Dose Rate
Becquerels Curies milliRADs
per hour		 microSieverts
7.1477 × 1004 1.93 × 10-06 1.038 10.38

Estimated Average Annual Exposure: 3.6 RAD (3.6 centiSieverts)
Crystalography:
System: Tetragonal - Dipyramidal
Axial Ratios: a: 1
c: 4.24162
Cell Dimensions: a: 7.16 Å
c: 30.37 Å
Z: 1
V: 1,556.94 Å3
DenCalc: 2.54
H-M Symbol: 4/m
Space Group: P42/n (?)
X-Ray Diffraction:
  By Intensity ( I/Io )		 (1): 7.62 Å
(1): 14.62 Å
(0.9): 3.49 Å
 
Habit:
  • Lathe-like of wedge shaped crystals
    		•   
    Cleavage:
    [001] Perfect
    [010] Good
    [100] Good
    		 
    Fracture:    
    Moh's
        Hardness:    		 2  
    Density: 2.54 grams/cm3
    Color: Pale yellow, White  
    Streak: White  
    Luster: Vitreous  
    Diaphaniety: Transparent to Translucent  
    Pleochroism:
    (x):  
    (y:)  
    (z:)  
    		 
    Ultra Violet
        Fluorescence:    		 Greenish U.V. Wavelength Not Given
    Magnetism: Non-magnetic  
    Occurance:
  • A secondary mineral in uranium deposits
    		•   
    Associated
        Minerals:

    Anatase, Aragonite, Arsenic, Arsenolite, Arsenopyrite, Barite, Becquerelite, Billietite, Bismuth, Bismuthinite, Bornite, Brochantite, Calcite, Chalcocite, Chalcopyrite, Chrysocolla, Copper, Cornwallite, Covellite, Cuprite, Digenite, Dolomite, Erythrite, Fluorite, Galena, Goethite, Hematite, Kasolite, Langite, Lavendulan, Luzonite, Löllingite, Malachite, Marcasite, Metaheinrichite, Metakahlerite, Metazeunerite, Mixite, Nickeline, Novácekite, Olivenite, Pearceite, Proustite, Pyrite, Pyrolusite, Quartz, Rutile, Safflorite, Silver, Sphalerite, Tennantite, Uraninite, Uranophane, Uranopilite, Uranospinite, Vandendriesscheite, Wolsendorfite, Zeunerite

    Mineral   -   > 80% of sites
    Mineral   -   > 55% of sites
    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Arsenuranospathite
    Localities:

    Rare

    Arsenuranospathite Localities
    Notes:

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

    Crystals are probably metamic.