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Sénarmontite, Senarmontite

Year of discovery: 1851 (Djebel Hammimat mine, Algeria), 1930 (Japan)

Locality list: 9 localities of sénarmontite

• Sb₂O₃
• [Sb³⁺₂][O₃]^6-

• Class: Oxide
• Soluble in: HCl, HNO₃, H₂SO₄
• Paramorph: Replaced by Valentinite.

• Polymorph: Valentinite (Orthorhombic)

• 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, Gray
• Streak: White
• Luster: Adamantine
• Diaphaneity: Transparent-Translucent

• Cleavage: Poor on {111} (4 planes)
• Hardness: 2-2.5
• Density: 5.5

• System: Cubic
• Group: m3m, Fd3m
• Lattice: a=11.2