Formula: CaMn2Be3(SiO4)3
Origin of name: from Greek for in three parts
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: colourless, pink, yellowish red
Diaphaneity: transparent
Luster: vitreous
Habit: crystals prismatic, pseudohexagonal, to 12 mm
Hardness: 6 to 7
Specific gravity: 3.47
Cleavage: 1; {001} distinct
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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