General Information:
Chemical Formula:(Pb,Ba)(UO2)6(BiO)4(AsO4)2(OH)12·3(H2O)
Composition:(Molecular Weight = 3,228.32 gm)Barium 2.13 %
BaUranium 44.24 %
U Bismuth 25.89 %
BiArsenic 4.64 %
AsHydrogen 0.56 %
H Lead 3.21 %
PbOxygen 19.33 %
O Empirical Formula: Pb0.5Ba0.5(UO2)6Bi4O4(AsO4)2(OH)12·3(H2O)
Environment:In quartz gangue from a mine.
Locality:Walpurgis vein, Weisser Hirsch, Neustadtel, Schneeberg, Saxony, Germany.
Name Origin:Named for Eric Asselborn (1954-), mineral collector and surgeon, Montrevel-en-Bresse, France.
Physical Properties: Cleavage:None
Color:brown or lemon yellow.
Density:5.6
Diaphaniety:Translucent
Habits:Euhedral Crystals - Occurs as well-formed crystals showing good external form., ,
Hardness:3 - Calcite
Luster:Adamantine - Greasy
Streak:lemon
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