Metaheinrichite

 IMA-GP
Uranium 40.2a.4.2
(Dana Classification Number)
(Images) 7/E.02-120
(Strunz ID)

Property Data Remarks
Named for: Being the meta- form of Heinrichite, which is named for Eberhardt William Heinrich (1918-1991), Mineralogist, University of Michigan, U.S.A.
Alternate
    Name(s):
  • meta-Heinrichite
    		•   
    Mineral Class:
    Phosphates, Arsenates and Vanadates
      Uranylphosphates and Uranylvanadates with
    [UO2]2+ - [PO4 | AsO4]3- and
    [UO2]2+ - [V2O8]6-
        Meta-Autunite group
    		 
    Chemical
        Formula:    		 Ba(UO2)2(AsO4)2 · 8H2O  
    Chemical
        Composition:
    Arsenic: (As) 13.63%
    Barium: (Ba) 12.49%
    Hydrogen: (H) 1.47%
    Oxygen: (O) 29.11%
    Uranium: (U) 43.30%
    		by weight
    Molecular
        Weight:    		 1,099.34 daltons (amu)
    Specific
        Radioactivity:

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

    Specific Activity Dose Rate
    Becquerels Curies milliRems/hour microSieverts/hour
    7.7514 × 1004 2.09 × 10-06 1.06 106.41

    Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
    Crystalography:
    System: Tetragonal - Dipyramidal
    Axial Ratios: a: 1
    c: 2.49435
    Cell Dimensions: a: 7.08 Å
    c: 17.66 Å
    Z: 2
    V: 885.23 Å3
    DenCalc: 4.12
    H-M Symbol: 4/m
    Space Group: P 41/?
    X-Ray Diffraction:
      By Intensity ( I/Io )    		 (1): 3.71 Å
    (1): 8.55 Å
    (0.9): 5.41 Å
    		 
    Habit:
  • Imperfect crystal plates
    		•   
    Cleavage:
    [001] Perfect
    [100] Distinct
    		 
    Fracture:    
    Moh's
        Hardness:    		 2.5  
    Density: 4.04 grams/cm3
    Color: Yellow, Green  
    Streak: Yellowish white  
    Luster: Vitreous - Pearly  
    Diaphaneity: Transparent to Translucent  
    Pleochroism:
    (x):  
    (y:)  
    (z:)  
    		 
    Ultra Violet
        Fluorescence:
    Long Wave: Yellowish-green
    Short Wave: Yellow green

    Short wave fluorescence is stronger

    		 (One Specimen Examined)
    Magnetism: Non-magnetic  
    Occurance:
  • Alteration product of Heinrichite
  		•   
    Associated
        Minerals:

    Aragonite, Arsenic, Arsenolite, Arsenuranospathite, Azurite, Barite, Barium-Pharmacosiderite, Bismuth, Bismuthinite, Bornite, Brochantite, Calcite, Chalcocite, Chalcopyrite, Chrysocolla, Coffinite, Copper, Covellite, Cuprite, Digenite, Dolomite, Erythrite, Fluorite, Galena, Goethite, Gypsum, Heinrichite, Hematite, Kasolite, Lavendulan, Löllingite, Malachite, Marcasite, Metazeunerite, Novácekite, Proustite, Pyrite, Quartz, Safflorite, Silver, Skutterudite, Sphalerite, Tennantite, Uraninite, Uranophane, Uranospinite, Zeunerite

    Mineral   -   > 86% of sites
    Mineral   -   > 64% of sites
    Mineral   -   > 43% of sites
    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Metaheinrichite
    Locations:

    Rare

    Metaheinrichite Locations
    Notes:

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

    Alteration product of heinrichite.

    Crystals are probably metamict.

    Metaheinrichite Images

    Specimen #1
       
    White King Mine, Lake Co., Oregon, U.S.A.

    Specimen Notes

    Occurrence -  

     

    Crystals -  

     

    Appearence -  

    Diaphaniety -

    Luster -

     

      -  

     

    Specimen Physical Properties
    Size   cm   cm   cm
    Weight: x grams    
    g-Radiation Level:   cmp   msieverts background: 20 cpm
           
     

    Specimen #2
    (001a) (001b) (001c) (001d)

     
    (001e) (001f) (001g) (001h)

     
    (001i)
    (after Heinrichite)
    Schmiedestollenhalde mine, Wittichen, Schenkenzell, Schwartzwald, Baden-Württemberg, Germany

    Specimen Notes

    Occurrence -  

     

    Crystals -  

     

    Appearence -  

    Diaphaniety -

    Luster -

     

      -  

     

    Specimen Physical Properties
    Size   cm   cm   cm
    Weight: x grams    
    g-Radiation Level:   cmp   msieverts background: 20 cpm