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Cyanotrichite (Photo)

Year of discovery: 1839 (Moldova Nouă, Romania), 1996 (Japan)

Locality list: 4 localities of cyanotrichite

• Cu₄Al₂SO₄(OH)₁₂,2H₂O
• [Cu²⁺₄][Al³⁺₂][(OH)₁₂|SO₄]^14-,2H₂O

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

• SO₄ => CO₃: Carbonatecyanotrichite

• Color: Blue
• Streak: Pale blue
• Luster: Silky

• Habit: Acicular

• Cleavage: Good
• Hardness: 1-3
• Density: 2.8

• System: Orthorhombic
• Lattice: a=10.2, b=12.6, c=2.9