Calcium catapleiite

Formula:  CaZrSi₃O₉ ^. 2H₂O

Origin of name:  From Calcium and catapleiite

Crystal system:  Hexagonal

Crystal class:  6/m 2/m 2/m

Twinning:

Unit cell:

Colour:  Pale yellow to cream

Diaphaneity:  Opaque, translucent on edges

Luster:  Vitreous to dull

Habit:  Massive

Hardness:  4.5 to 5

Specific gravity:  2.77

Cleavage:  None

Tenacity:

Streak:

Synonyms/varieties:

Comments:  Series with catapleiite