Bauranoite

 IMA-A 1971-052
Uranium 5.4.2.2
(Dana Classification Number)
(No Images) 4/H.06-30
(Strunz ID)

Property Data Remarks
Named for: Its Barium, Uranium and Oxygen content
Alternate
    Name(s):
  • Bauranoit
  • Bauranoita
  
Mineral Class:
Oxides
  Uranyl ([UO2]2+) Hydroxides and Hydrates
    Calciouranoite - Wölsendorfite series
 
Chemical
    Formula:		 BaU2O7 · 4-5H2O  
Chemical
    Composition:
Barium: (Ba) 17.03%
Hydrogen: (H) 1.12%
Oxygen: (O) 22.82%
Uranium: (U) 59.03%
by weight
Molecular
    Weight:		 806.45 daltons (amu)
Specific
    Radioactivity:

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

Specific Activity Dose Rate
Becquerels Curies milliRADs
per hour		 microSieverts
1.05666 × 1005 2.86 × 10-06 1.40 13.99

Estimated Average Annual Exposure: 3.6 RAD (3.6 centiSieverts)
Crystalography:
System: Triclinic
Axial Ratios: a:  
b:  
c:  
Cell Dimensions: a:   Å
b:   Å
c:   Å
Z:  
a:   °
b:   °
g:   °
V:   Å3
DenCalc:  
H-M Symbol:  
Space Group: Triclinic ?
X-Ray Diffraction:
  By Intensity ( I/Io )		 (1): 3.09 Å
(0.7): 3.41 Å
(0.6): 1.98 Å
(0.6): 1.667 Å
(0.6): 1.723 Å
(0.6): 1.908 Å
(0.6): 1.948 Å
(0.5): 1.325 Å
 
Habit:
  • Massive
  • Granular
    		•   
    Cleavage:
    [001]  
    [010]  
    [100]  
    		 
    Fracture:    
    Moh's
        Hardness:    		 5  
    Density: 5.28 - 5.42 grams/cm3
    Color: Reddish brown  
    Streak:    
    Luster:    
    Diaphaniety:    
    Pleochroism:
    (x):  
    (y:)  
    (z:)  
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:  
    Short Wave:  
    		 
    Magnetism: Non-magnetic  
    Occurance:
  • Secondary mineral replacing uraninite
    		•   
    Associated
        Minerals:

    Calciouranoite, Metacalciouranoite, Uraninite

    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Bauranoite
    Localities:

    Extremely rare

    Bauranoite Localities
    Notes:

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

    Crystals are probably metamic.