Formula: WO3 . 2H2O
Origin of name: From locality; Meymac, Correze, France
Crystal system: Amorphous
Crystal class: Unknown
Twinning:
Unit cell:
Colour: Yellow-brown, yellow
Diaphaneity:
Luster: Vitreous to resinous
Habit: Massive
Hardness:
Specific gravity: 3.94 to 4.10
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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