Formula: NaAl(SO4)2 , 11H2O
Origin of name: Locality; Mendoza, Argentinia
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Colourless, white
Diaphaneity: Transparent
Luster:
Habit: Crusts and fibrous masses
Hardness: ~ 3
Specific gravity: 1.730 to 7.765
Cleavage: 3; {100} good, {001} and {010} indistinct
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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