Mineral - Atelestit
Atelestit
Chemical Properties
Mineral Class
Arsenates
Toxicity
low
Formula
Bi₂(AsO₄)O(OH)
Unit Cell
a=10,83 b=7,43 c=7,00 β=107° Z=4
Physical Properties
Hardness
4.5 - 5
Streak
white
Density
Very Heavy (>6)
Cleavage
Undeutlich auf (100)
Fracture
conchoidal
Tenacity
Optical Properties
Color
brownyellowgreen
Birefringence
0,040
Luster
Greasy,
Adamantine
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
spherical
Formation
Sekundär, Oxidationszone von Bismut-Arsen-Lagerstätten
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Atelestit
Composition
Elements
Mass
P₂O₅
1,63
As₂O₅
14,12
Bi₂O₃
82,41
Fe₂O₃
0,51
H₂O
1,92
Deutschland
Groups and Members
Atelestit-Gruppe
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