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Russellite

Year of discovery: 1938 (Castle-an-Dinas mine, UK), 1979 (Japan)

Locality list: 3 localities of russellite

• Bi₂WO₆
• [(BiO)₂]²⁺[WO₄]^2-

• Class: Bismutyl - Tungstate

• (BiO)₂ => Pb: Stolzite, Raspite
• (BiO)₂ => Ca: Scheelite
• (BiO)₂ => Mn: Hübnerite (Hubnerite)
• (BiO)₂ => Zn: Sanmartinite
• (BiO)₂ => Fe: Ferberite

• WO₄ => MoO₄: Koechlinite
• WO₄ => CO₃: Bismutite
• WO₄ => Cl₂: Bismoclite
• WO₄ => F₂: Zavaritskite
• WO₄ => (OH)₂: Daubréeite (Daubreeite)

• Color: Yellowish green, Yellow
• Streak: White
• Luster: Metallic
• Diaphaneity: Opaque

• Cleavage: Good
• Hardness: 3.5
• Density: 7.4

• System: Orthorhombic
• Group: mm2, Pca2₁
• Lattice: a=5.4, b=16.4, c=5.5