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Dominant species
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Anatase
Chemical
Formula
TiO2
Species
Oxides & Hydroxides
Crystal
System
Tetragonal
Mohs
Scale
5-6
Specific
Gravity
3.79-3.97
Color
Black, reddish to yellowish brown, dark blue, gray
Streak
pale yellowish white
Luster
Adamantine, Metallic
Refractive
Index
n = 2.561 n = 2.488
Diaphaneity
Transparent, Translucent
Cleavage
Perfecton and
Fracture
Sub-Conchoidal
Crystal Habit:Pyramidal (crystals are shaped like pyramids), tabular (form dimensions are thin in one direction).
Geological Setting:Usually secondary, derived from other titanium-bearing minerals. In alpine veins, derived from the enclosing gneisses or schists by hydrothermal solutions. In igneous and
metamorphic rocks; in pegmatites; from a carbonatite. A common detrital mineral.
Anatase5533
Anatase5533
Anatase5532
Anatase5532
Anatase5528
Anatase5528
Anatase5522
Anatase5522
Anatase5516
Anatase5516
Anatase5512
Anatase5512
Anatase5511
Anatase5511
Anatase5507
Anatase5507
Anatase5503
Anatase5503
Anatase5499
Anatase5499
Anatase5495
Anatase5495
Anatase5494
Anatase5494
Anatase5491
Anatase5491

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