Mineral - Brenkite
Brenkite
Chemical Properties
Mineral Class
Carbonates
Toxicity
none
Formula
Ca₂(CO₃)F₂
Unit Cell
Physical Properties
Hardness
5
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitecolorless
Birefringence
0.068
Luster
Vitreous
Transparency
transparent
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
orthorhombic-dipyramidal - 2/m 2/m 2/m
Space Group
Pbcn (60)
Habit
spherical, prismatic, tabular
Formation
Magmatisch, Vulkanisch
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Brenkite