Canasite

Formula:  (Na,K)₆Ca₅Si₁₂O₃₀(OH,F)₄

Origin of name:  Combination of symbols of elements

Crystal system:  Monoclinic

Crystal class:  m

Twinning:

Unit cell:

Colour:  Greenish yellow

Diaphaneity:  Transparent to translucent

Luster:  Vitreous

Habit:  Grains up to large size

Hardness:

Specific gravity:  2.71

Cleavage:  2; perfect

Tenacity:

Streak:  Colourless

Synonyms/varieties:

Comments:  Dimorphous with frankamenite