Mineral - Hydroboracite
Hydroboracite
Chemical Properties
Mineral Class
Borates
Toxicity
none
Formula
CaMg[B₃O₄(OH)₃]₂·3H₂O
Unit Cell
Physical Properties
Hardness
2 - 3
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whiteyellowcolorless
Birefringence
Luster
Vitreous,
Silky
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
fibrous, acicular, prismatic, radial
Formation
Metasomatose (aus Colemanit)
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Hydroboracite