Formula: Na2Ca5Ti(Si2O7)2F4
Origin of name: For Count von Götzen, German discoverer of mineral
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: Colourless
Diaphaneity:
Luster: Greasy
Habit: Crystals prismatic, tiny
Hardness:
Specific gravity: 3.14
Cleavage: 2; {100} perfect, {001} good
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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