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Montanite

Year of discovery: 1868 (Highland Mining district, USA), 2025 (Japan)

Locality list: A locality of montanite

• Bi₂TeO₆,nH₂O, n=0 - 2/3
• [Bi³⁺₂][TeO₆]^6-,nH₂O, n=0 - 2/3

• Class: Orthotellurate - Hydrate
• Formed by alteration of Tetradymite

• Bi₂ => Cu₃: Mcalpineite

• Color: Yellowish green, Pale yellow, White
• Luster: Waxy
• Diaphaneity: Opaque

• Density: 3.7

• System: Hexagonal
• Group: (-6), P(-6)
• Lattice: a=9.1, c=5.6