Formula: (K,Ca)0.2(W,Fe)2(O,OH)6 . H2O
Origin of name: From ferric iron (Fe3+) and tungstite
Crystal system: Cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell:
Colour: Yellow
Diaphaneity: Translucent
Luster:
Habit: Crystals dipyramidal; fibrous; ocherous powder
Hardness:
Specific gravity: 5.2
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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