[ Top ] [ Japanese ]

Aluminite

Year of discovery: 1807 (Halle, Germany), 1973 (Japan)

Locality list: A locality of aluminite

• Al₂SO₄(OH)₄,7H₂O
• [Al³⁺₂][(OH)₄|SO₄]^6-,7H₂O

• Class: Sulfate - Hydroxide - Hydrate
• Soluble in: HCl, HNO₃, H₂SO₄

• Color: White, Yellow, Gray
• Streak: White
• Luster: Earthy
• Diaphaneity: Opaque

• Cleavage: No
• Hardness: 1-2
• Density: 1.7

• System:Monoclinic
• Group: 2/m, P2₁/c
• Lattice: a=7.4, b=15.6, c=11.7, β=110.2

Etymology: Chemical composition