Mineral - Eulytine
Eulytine
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Bi₄(SiO₄)₃
Unit Cell
a=10,29 Z=4
Physical Properties
Hardness
4.5
Streak
white
Density
Very Heavy (>6)
Cleavage
Unvollkommen auf (110)
Fracture
uneven
Tenacity
Brittle
Optical Properties
Color
brownredorangeyellowgreen
Birefringence
Luster
Vitreous,
Adamantine
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
isometric
Point Group
Space Group
Habit
spherical, Tetrahedron
Formation
Sekundär, in hydrothermalen Bismut-Lagerstätten
Paragenesis
Twinning
Mehrfache Durchdringungszwillinge
Rarity
Rather rare
Synonyms
Eulytine
Composition
Elements
Mass
SiO₂
16,52
Bi₂O₃
82,23
Fe₂O₃
0,70
P₂O₅
0,40
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