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Nordstrandite

Year of discovery: 1958 (Mount Alifan, Guam, and Gunong Kapor, Malaysia), 1982 (Japan)

Locality list: 3 localities of nordstrandite

• Al(OH)₃
• β-[Al³⁺][(OH)₃]^3-, beta-[Al³⁺][(OH)₃]^3-

• Class: Hydroxide

• Polymorph: Bayerite (α, Monoclinic), Gibbsite (γ, Monoclinic), Doyleite (δ, Triclinic)

• Color: Pale brown, Colorless, Pale green
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: Perfect on {110} (1 plane)
• Hardness: 3
• Density: 2.4

• System: Triclinic
• Group: 1, P1
• Lattice: a=5.1, b=5.1, c=5.0, α=93.7, β=118.9, γ=70.3