Mineral - Pargasite
Pargasite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
NaCa₂(Mg,Fe²⁺)₄Al(Si₆Al₂)O₂₂(OH)₂
Unit Cell
Physical Properties
Hardness
5.5
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
browngreen
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
massive, acicular, prismatic
Formation
Magmatisch, Metamorphose
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Pargasite