Mineral - Modraite
Modraite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Ca₁₉Fe²⁺Al₄(Al₆Fe²⁺₂)( □4) □[Si₂O₇]₄[(SiO₄)₁₀](OH)(OH)₉
Unit Cell
Physical Properties
Hardness
6
Streak
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
Birefringence
Luster
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
tetragonal
Point Group
Space Group
Habit
Formation
Paragenesis
Twinning
Rarity
Synonyms
Modraite