Formula: Mg3(Fe,Al,Si)2(SiO4)2
Origin of name: For Alan Major, scientist
Crystal system: Cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell:
Colour: Purple
Diaphaneity:
Luster:
Habit: Embedded grains, minute
Hardness: 7 to 7.5
Specific gravity: 4
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: From a meteorite
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