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Minerals - Schiavinatoite | TerraCollect
Mineral - Schiavinatoite
Schiavinatoite
(Nb,Ta)(BOâ‚„)
Chemical Properties
Mineral Class
Borates
Toxicity
none
Formula
(Nb,Ta)(BOâ‚„)
Unit Cell
Physical Properties
Hardness
8
Streak
white
Density
Very Heavy (>6)
Optical Properties
Color
brown
gray
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
tetragonal
Point Group
Cleavage
Fracture
Tenacity
Space Group
Habit
coarse,
dipyramidal,
massive,
Octahedron
Formation
Magmatisch, Pegmatit
Paragenesis
Twinning
Rarity
Rare
Synonyms
Schiavinatoite
