Formula: (Na,Ca,K)Al3(SO4)2(OH)6
Origin of name: For A. E. Minami, Japanese geochemist
Crystal system: Hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell:
Colour:
Diaphaneity:
Luster:
Habit:
Hardness: 3.5
Specific gravity: 2.81
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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