Formula: Na2(TiO)SiO4
Origin of name: combination of symbols for elements
Crystal system: tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell: a = 6.5, c = 5.07
Colour: yellow-green to greenish gray
Diaphaneity:
Luster: vitreous to adamantine
Habit: single grains, rosette-like intergrowths
Hardness: 3 to 4
Specific gravity: 3.15
Cleavage: 2; {001} perfect, {100} less perfect
Tenacity:
Streak: White
Synonyms/varieties:
Comments:
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