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Imogolite (Photo)

Year of discovery: 1962 (Japan)

Locality list: 24 localities of imogolite

• Al₂SiO₃(OH)₄
• [Al³⁺₂][(OH)₄|SiO₃]^6-

• Class: Allophane group
• Class: Phyllosilicate - Hydroxide

• Color: Pale yellow, Brown
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Habit: Fine tube
• Aggregate: Bundle

• Hardness: 2-3
• Density: 2.7

• System: Monoclinic, Pseudohexagonal

Name: Imo (potato) - go (child), a local name of weathered Imogolite-bearing pumice at Hitoyoshi basin in Kumamoto prefecture, Japan