Anatase

Refractive Index : 2.564 – 2.488

Optical Characteristic : DR, U-

Specific Gravity : 3.97 – 3.82

Formula : TiO2

Crystal System : Tetragonal

Variety/Species : Anatase

Species/Group : Titanium Oxide

Birefringence : .067-.046

Dispersion : .213-.259

Hardness : 5.5 to 6

Toughness : Poor

Ultrasonic : Never

Steam : Never

UV Long : Inert

UV Short : Inert

Pleochroism : 2 or 3 Colors

Strength : Weak to strong

Pleochroism Colors : Weak to strong. Strong in stones with deep color. Brown/ yellow-brown /greenish blue.

Heat : Sensitive

Acids : Sensitive

Light : Stable

Polish Luster : Adamantine to resinous

Fracture : Subconchoidal

Fracture Luster :

Clarity Type : N/A

Tones : N/A

Saturations : N/A

Cause of Color :

Enhancements : None

Cleavage : Perfect 2 directions.

Color Range : Black, reddish brown, red-brown, brown, yellowish brown, blue, (dark), gray, lavender, yellowish purplish, reddish, bluish,

Transparency : Transparent to translucent

Phenomena : None

Separations : Anatase from-

Identifying Characteristics and information
Crystals are shaped like pyramids.
May show only 2 colors of pleochroism.

Spectral Data
Not Diagnostic.

Trade Names and Misnomers
Anatase
Octahedrite

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