Formula: Ca12 Al14 O33
Origin of name: Locality; Mayen, Eifel district, Germany
Crystal system: Cubic/Isometric
Crystal class: -43m
Twinning:
Unit cell: a = 11.982
Colour: Colourless
Diaphaneity: Transparent
Luster:
Habit: Rounded grains
Hardness:
Specific gravity: 2.85
Cleavage: None
Tenacity:
Streak: White
Synonyms/varieties:
Comments:
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