Formula: CaAl(OH)F4 . H2O
Origin of name: From Greek for earth and from arksutite (a synonym of chiolite, now the accepted name)
Crystal system: Monoclinic
Crystal class: Unknown
Twinning:
Unit cell:
Colour: White
Diaphaneity:
Luster: Dull
Habit: Massive; chalk-like
Hardness: 2
Specific gravity: 2.77
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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