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Osarizawaite (Photo)

Year of discovery: 1961 (Japan as the first occurence in the World)

Locality list: 3 localities of osarizawaite

• PbCuAl₂(SO₄)₂(OH)₆
• Pb(Al,Cu)₃(SO₄)₂(OH)₆
• [Pb²⁺][Cu²⁺][Al³⁺₂][(OH)₆|(SO₄)₂]^10-

• Class: Alunite group < Alunite supergroup
• Class: Sulfate - Hydroxide
• Soluble in: concentrated hot HCl, concentrated hot H₂SO₄
• Insoluble in: Water, HNO₃

• Al => Fe: Beaverite-(Cu)

• Color: Yellowish green
• Streak: Pale green
• Luster: Earthy
• Diaphaneity: Translucent

• Habit: Earthy, Powder, Microtube

• Cleavage: Perfect (1 plane)
• Hardness: 3-4
• Density: 3.9

• System: Trigonal
• Group: (-3)m, R(-3)m
• Lattice: a=7.1, c=17.2

Etymology: Osarizawa mine in Akita prefecture, Japan, where this mineral was disovered for the first time.