Mineral - Omphacite
Omphacite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
(Ca,Na)(Mg,Fe,Al)Si₂O₆
Unit Cell
Physical Properties
Hardness
5 - 6
Streak
whitegreengreen white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
green
Birefringence
Luster
Vitreous,
Silky
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
granular, massive
Formation
Metamorphose
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Omphacite