Zinc-Zippeite

 IMA-A 1971-008
Uranium 30.10.4.5
(Dana Classification Number)
(No Images) 6/D.20-80
(Strunz ID)

Property Data Remarks
Named for: Its relationship to Zippeite (named for Franz Xaver Maxmillion Zippe (1791-1863), Austrian mineralogist), and its Zinc content
Alternate
    Name(s):
  		•  
    Mineral Class:
    Sulfates,Chromates,Molybdates and Tungstates
      Uranylsulfates [UO2]+2 - [SO4]-2
        Uranopilite - Rabejacite series
    		 
    Chemical
        Formula:    		 Zn+22(UO2)6(SO4)3(OH)10 · 16H2O  
    Chemical
        Composition:
    Hydrogen: (H) 1.70%
    Oxygen: (O) 32.03%
    Sulfur: (S) 3.85%
    Uranium: (U) 57.19%
    Zinc: (Zn) 5.24%
    		by weight
    Molecular
        Weight:    		 2,497.45 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    1.02361 × 1005 2.77 × 10-06 1.41 141.42

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Orthorhombic
    Axial Ratios: a:b:c = ::
    Cell Dimensions: a=, b=, c=, Z=; V= Den(Calc)=
    H-M Symbol:
    Space Group:
    X Ray Diffraction: By Intensity(I/Io): 7.08(1) 3.54(0.5) 3.44(0.4) 3.1(0.3) 9.62(0.3) 1.94(0.2) 2.47(0.2) 4.84(0.1)
    		 
    Habit:
  • Encrustations
  		•   
    Cleavage:
    [001]
    [010] Distinct
    [100]
    		 
    Fracture:    
    Moh's
        Hardness:    		 2, or 5 - 5.5 Difference is believed to be between bulk and crystal hardness
    Density: 4.3 grams/cm3
    Color: Yellow  
    Streak: Pale yellow  
    Luster: Earthy  
    Diaphaneity: Transparent to Translucent  
    Pleochroism:
    (x):
    (y:)
    (z:)
    		 
    Ultra Violet
        Fluorescence:
    Long Wave: Bright yellow
    Short Wave: Bright yellow
    		 
    Magnetism: Non-magnetic  
    Occurance:
  		•  
    Associated
        Minerals:

    Andersonite, Bayleyite, Gypsum, Johannite, Schröckingerite, Swartzite, Uraninite, Zippeite

    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Zinc-Zippeite
    Locations:

    Extremely rare

    Zinc-Zippeite Locations
    Notes:

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

    Crystals are probably metamic.