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Minerals - Helvine | TerraCollect
Mineral - Helvine
Helvine
Mn₄[S|(BeSiO₄)₃][
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Mn₄[S|(BeSiO₄)₃][
Unit Cell
Physical Properties
Hardness
6 - 6.5
Streak
white
Density
Normal (2-3,5)
Optical Properties
Color
brown
red
yellow
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
isometric
Cleavage
Fracture
Tenacity
Point Group
Space Group
Habit
dodecahedron,
Tetrahedron
Formation
Magmatisch, hydrothermal
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Helvine
