Mineral - Pentahydroborite
Pentahydroborite
Chemical Properties
Mineral Class
Borates
Toxicity
none
Formula
CaB₂O(OH)₆ · 2H₂O
Unit Cell
Physical Properties
Hardness
2.5
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitecolorless
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
triclinic
Point Group
Space Group
Habit
prismatic, tabular
Formation
Metasomatose
Paragenesis
Twinning
Rarity
Rare
Synonyms
Pentahydroborite