Mineral - Kasatkinite
Kasatkinite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Ba₂Ca₈B₅Si₈O₃₂(OH)₃ · 6H₂O
Unit Cell
a=5,75 b=7,24 c=20,79 β=91° Z=1
Physical Properties
Hardness
4 - 4.5
Streak
white
Density
Normal (2-3,5)
Cleavage
nd
Fracture
hooked,
uneven
Tenacity
Brittle
Optical Properties
Color
whitecolorless
Birefringence
Luster
Vitreous,
Silky
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
tufty, fibrous, acicular, radial
Formation
hydrothermal in Rhodginit
Paragenesis
Twinning
Rarity
Rare
Synonyms
Kasatkinite
Composition
Elements
Mass
Na₂O
0,23
K₂O
0,57
CaO
28,94
BaO
16,79
B₂O₃
11,57
Al₂O₃
0,28
SiO₂
31,63
F
0,07
H₂O
9,05
Russland