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Bismutite (Photo)

Year of discovery: 1841 (Schneeberg district, Germany, and Arme Hilfe mine, Germany), 1915 (Japan)

Locality list: 29 localities of bismutite

• Bi₂O₂(CO₃)
• [(BiO)⁺₂][CO₃]^2-

• Class: Bismutyl - Carbonate
• Soluble in: HCl (with bubbles), HNO₃ (with bubbles), H₂SO₄ (with bubbles)
• Substitution pseudomorph: Replace Bismuthinite or Scheelite.

• CO₃ => MoO₄: Koechlinite
• CO₃ => WO₄: Russellite

• Color: Yellow, Brown
• Streak: Gray
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Habit: Earthy

• Cleavage: Perfect on {001} (1 plane)
• Hardness: 2.5-3.5
• Density: 7.0

• System: Orthorhombic
• Group: mm2, Imm2
• Lattice: a=3.9, b=3.9, c=13.7