Formula: Na(CaNa)Mg3AlFe(Si6Al2)O22(OH)2
Origin of name: From magnesium and taramite
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Black to green
Diaphaneity:
Luster: Vitreous
Habit: Prismatic
Hardness: 5 to 6
Specific gravity: 3.13
Cleavage: 3; {110} perfect, {100} and {001} partings
Tenacity:
Streak:
Synonyms/varieties:
Comments: Series with taramite
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