Fritzscheite

 IMA-GP
Uranium 40.2a.25.1
(Dana Classification Number)
(No Images) 7/E.01-60
(Strunz ID)

Property Data Remarks
Named for: Karl Julius Fritzsche (1808-1871), German chemist
Alternate
    Name(s):
  		•  
    Mineral Class:
    Phosphates, Arsenates and Vanadates
      Uranylphosphates and uranylvanadates with
    [UO2]2+ - [PO4 | AsO4]3- and
    [UO2]2+ - [V2O8]6-
        Autunite group
    		 
    Chemical
        Formula:    		 Mn(UO2)2[(P,V)O4]2 · 10H2O  
    Chemical
        Composition:
    Hydrogen: (H) 2.02%
    Manganese: (Mg) 5.50%
    Oxygen: (O) 35.23%
    Phosphorus: (P) 0.93%
    Uranium: (U) 47.65%
    Vanadium: (V) 8.67%
    		by weight
    Molecular
        Weight:    		 999.03 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    8.5297 × 1004 2.31 × 10-06 1.20 119.93

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Orthorhombic - Dipyramidal
    Axial Ratios: a: 1.2836
    b: 1
    c: 1.8836
    Cell Dimensions: a: 10.59 Å
    b: 8.25 Å
    c: 15.54 Å
    Z: 4
    V: 1,357.69 Å3
    DenCalc: 4.89
    H-M Symbol: 2/m 2/m 2/m
    Space Group: Pnam
    X-Ray Diffraction:
      By Intensity ( I/Io )    		 (1):   Å
    (0.0):   Å
    (0.0):   Å
    		 
    Habit:
  • Micaceous - Platy
    		•   
    Cleavage:
    [001] Perfect
    [010]  
    [100] Distinct
    		 
    Fracture: Brittle  
    Moh's
        Hardness:    		 2 - 3  
    Density: 4.39 grams/cm3
    Color: Red, Reddish brown  
    Streak: Brownish white  
    Luster: Vitreous - Pearly  
    Diaphaneity: Translucent  
    Pleochroism:
    (x):  
    (y:)  
    (z:)  
    		 
    Ultra Violet
        Fluorescence:
    Long Wave:  
    Short Wave:  
    		 
    Magnetism: Non-magnetic  
    Occurance:
  		•  
    Associated
        Minerals:

    Acanthite, Aragonite, 'Argentite', Argentopyrite, Arsenic, Arsenopyrite, Autunite, Azurite, Barite, Becquerelite, Bismite, Bismuth, Bismuthinite, Bismutite, Bornite, Calcite, Cassiterite, Cerussite, Chalcopyrite, 'Chlorite', Chrysocolla, Copper, Cuprite, Curite, Dolomite, Fluorite, Fourmarierite, Galena, Gold, Gypsum, Hematite, 'Jasper', Johannite, Kaolinite, 'Limonite', Löllingite, Magnetite, Malachite, Mimetite, Molybdenite, Muscovite, Nickel-Skutterudite, Nickeline, Opal, Parsonsite, Pyrargyrite, Pyrolusite, Pyromorphite, Pyrrhotite, Quartz var: Amethyst, Quartz var: Chalcedony, Quartz var: Smoky Quartz, Realgar, Rhodochrosite, Siderite, Silver, Skutterudite, Sphalerite, Stephanite, Talc, Tetrahedrite, Topaz, Torbernite, 'Tourmaline Group', Trögerite, Uraninite, Uranophane, Uranopilite, Uranosphaerite, 'Wad', Walpurgite, Waylandite, 'Wolframite', Wulfenite, Zeunerite, Zippeite

    Minerals   -   Uranium & Thorium
    mineral links

    		These are some of the minerals known to be found at both sites with Fritzscheite
    Localities:

    Extremely rare

    Fritzscheite Localities
    Notes:

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

    Crystals are probably metamic.