Formula: (Mg,Fe)3Al4BeSi3O16
Origin of name: after locality Surinam
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: blue
Diaphaneity:
Luster:
Habit: crystals tabular, to 0.2 mm
Hardness:
Specific gravity: 3.58
Cleavage: 1; {010} well developed
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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