Formula: (Mg,Ni)11(Fe,Cr,Al)3(OH)24(SO4,CO3)3.5 . 11H2O
Origin of name: After locality; Mount Keith, Western Australia
Crystal system: Hexagonal
Crystal class: Unknown
Twinning:
Unit cell:
Colour: Pink to white
Diaphaneity:
Luster:
Habit: Crystals flaky in aggregates and rosettes
Hardness:
Specific gravity: 1; {0001} perfect
Cleavage:
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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