Formula: Hg13(Cl,Br)8O9
Origin of name: For the Comanche Indians
Crystal class: mm2 or 2/m 2/m 2/m
Colour: Orange-red to yellow
Diaphaneity:
Habit: Crystals acicular, microscopic; anhedral masses
Hardness: 2
Specific gravity: 7.7
Cleavage: 2; {001} and {110} fair
Streak: Orange-yellow
Synonyms/varieties:
Comments:
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