Formula: Bi6Fe3(TeO3)(TeO4)2O9.9H2O
Origin of name: from locality Yecora, Mexico
Crystal system: Tetragonal
Crystal class: unknown
Twinning:
Unit cell:
Colour: Orange to yellow
Diaphaneity:
Luster: Pitchy or resinous
Habit: Cryptocrystalline
Hardness: 3
Specific gravity: 5.59
Cleavage: None
Tenacity: Brittle
Streak: Yellow
Synonyms/varieties:
Comments:
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