Mineral - Johnbaumite
Johnbaumite
Chemical Properties
Mineral Class
Arsenates
Toxicity
middle
Formula
Ca₅(AsO₄)₃OH
Unit Cell
Physical Properties
Hardness
4.5
Streak
white
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitegray
Birefringence
Luster
Vitreous,
Waxy
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
hexagonal
Point Group
Space Group
Habit
massive, prismatic
Formation
Metamorphose
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Johnbaumite