Calciotantite

Formula:  CaTa₄O₁₁

Origin of name:  From calcium and tantite

Crystal system:  Hexagonal

Crystal class:  622

Twinning:

Unit cell:

Colour:  Colourless

Diaphaneity:  Transparent

Luster:  Adamantine

Habit:  Crystals microscopic, square to rectangular to hexagonal

Hardness:  6.5 to 7

Specific gravity:  7.46

Cleavage:  None

Tenacity:

Streak:

Synonyms/varieties:

Comments: