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Tyrolite (Photo)

Year of discovery: 1845 (Falkenstein, Austria), 1950 (Japan)

Locality list: 9 localities of tyrolite

• Ca₂Cu₉(AsO₄)₄CO₃(OH)₄,11H₂O
• [Ca²⁺₂][Cu²⁺₉][(OH)₄|CO₃|(AsO₄)₄],11H₂O

• Class: Arsenate - Carbonate - Hydroxide
• Soluble in: HCl, NH₃aq

• Color: Bluish green, Blue
• Streak: Pale bluish green, Pale blue
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Habit: Platy
• Aggregate: Fan-like

• Cleavage: Good on {001} (1 plane)
• Hardness: 1.5-2
• Density: 3.2

• System: Monoclinic (1M, 2M) (Layer-stacking polytype)
• Group: 2/m, P2/c, C2/c
• Lattice (P2/c): a=27.6, b=5.6, c=10.5, β=98.1
• Lattice (C2/c): a=54.5, b=5.6, c=10.5, β=96.4

Synonym: Trichalcite