Formula: Fe(UO2)2(AsO4)2 . 10-12H2O
Origin of name: For F. Kahler, Austrian geologist
Crystal system: Tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell:
Colour: Lemon-yellow to yellowish green
Diaphaneity:
Luster:
Habit: Crystals tabular, to 2 mm
Hardness:
Specific gravity:
Cleavage: 1; {001} excellent
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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