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Humite [abbr. Hu ]

Year of discovery: 1813 (Monte Somma, Italy), 1962 (Japan)

Locality list: 4 localities of humite

• Mg₇(SiO₄)₃F₂
• (Mg,Fe)₇(SiO₄)₃(F,OH)₂
• [Mg²⁺₇][F₂|(SiO₄)₃]^14-

• Class: Humite group
• Class: Nesosilicate - Fluoride

• Color: White, Yellow, Dark brown
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: Poor on {001} (1 plane)
• Hardness: 6-6.5
• Density: 3.2

• System: Orthorhombic
• Group: mmm, Pnma
• Lattice: a=10.2, b=20.7, c=4.7