Mineral - Lamprophyllite
Lamprophyllite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
(Na,Mn²⁺)₃(Sr,Na)₂(Ti,Fe³⁺)₃(Si₂O₇)₂O₂(OH,O,F)₂
Unit Cell
Physical Properties
Hardness
2 - 3
Streak
whitebrownbrown white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
brown
Birefringence
Luster
Vitreous,
Pearly
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
acicular, radial
Formation
Magmatisch (Pegmatite)
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Lamprophyllite