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Valentinite

Year of discovery: 1845 (Les Chalanches mine, France), 1899 (Japan)

Locality list: 27 localities of valentinite

• Sb₂O₃
• [Sb³⁺₂][O₃]^6-

• Class: Oxide
• Soluble in: HCl
• Paramorph: Replace Sénarmontite (Senarmontite).

• Polymorph: Sénarmontite (Senarmontite) (Cubic)

• Sb => Fe: Hematite (α), Maghemite (γ)
• Sb => Cr: Eskolaite
• Sb => V: Karelianite
• Sb => Ti: Tistarite
• Sb => Mn: Bixbyite (γ)
• Sb => Al: Corundum (α)
• Sb => As: Arsenolite, Claudetite
• Sb => Bi: Bismite, Sphaerobismoite

• Sb2 => AsSb: Stibioclaudetite

• Color: Colorless, White, Pale yellow
• Streak: White
• Luster: Adamantine
• Diaphaneity: Transparent

• Cleavage: Perfect on {110} (2 planes), Imperfect on {010} (1 plane)
• Hardness: 2.5-3
• Density: 5.8

• System: Orthorhombic
• Group: mmm, Pccn
• Lattice: a=4.9, b=12.5, c=5.4

Etymology: Basilius Valentinus, German alchemist