RockVault
Anatase

Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)

tetragonaluncommonOxides

Anatase

TiO2

Anatase typically forms sharp, bipyramidal or tabular crystals, often exhibiting a distinct adamantine luster and various shades of brown, black, or blue.

Anatase Physical Properties

Mohs Hardness

5.5

Crystal System

tetragonal

Luster

adamantine

Streak Color

white to pale brownish

Cleavage

perfect on {011}, good on {001}

Fracture

subconchoidal

Specific Gravity

3.9

Colors

brown, black, yellow, blue, red, colorless

Transparency

transparent to opaque

Type Locality

Kharan, Balochistan, Pakistan

Mineral Group

Oxides

Uses

ore of titanium, collector's item

Associated Minerals

quartz, feldspar, rutile, brookite, ilmenite, hematite, chlorite, adularia

Rarity

uncommon

Geological Context

It is a common accessory mineral found in igneous and metamorphic rocks, often forming as a secondary mineral from the alteration of other titanium-bearing minerals or in hydrothermal veins.