Formula: BaZrSi3O9
Origin of name: From combination of symbols of elements
Crystal system: Hexagonal
Crystal class: -6m2
Twinning:
Unit cell: a = 6.742 Å, c = 9.93 Å
Colour: Colourless
Diaphaneity: Transparent to translucent
Luster:
Habit: Crystals tiny prismatic; anhedral grains
Hardness:
Specific gravity: 3.82
Cleavage: 2; {0001}, {10-14} probably
Tenacity:
Streak:
Synonyms/varieties:
Comments: Found as a late-stage interstitial mineral in aegirine-riebeckite granite, in granular celsian-bearing rocks near contacts with granites
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