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Minerals - Brookite | TerraCollect
Mineral - Brookite
Brookite
TiOâ‚‚
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
none
Formula
TiOâ‚‚
Unit Cell
a=5.46 b=9.18 c=5.14 Z=8
Physical Properties
Hardness
5.5 - 6
Streak
white
Density
Heavy (3,5-6)
Optical Properties
Color
brown
red
yellow
Birefringence
0.117
Luster
Vitreous,
Adamantine
Transparency
translucent,
transparent,
opaque
Pleochroism
Geomineralogical Properties
Crystal System
Composition
Elements
Mass
TiOâ‚‚
98.59
Fe₂O₃
1.41
Wales (Palache et al. 1952)
Karten-Ebenen
Geologische Karte
Satelliten Karte
Cleavage
Indistinct after {120}
Fracture
uneven
Tenacity
Brittle
orthorhombic
Point Group
orthorhombic-dipyramidal - 2/m 2/m 2/m
Space Group
Pbca (61)
Habit
dipyramidal,
prismatic,
tabular
Formation
hydrothermal, Pegamtite
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Brookite
