Paralammerite

IMA formula: Cu₃(AsO₄)₂

Crystallography: Monoclinic. P2₁/c. a = 6.306(1) Å, b = 8.643(1) Å, c = 11.310(1) Å. β = 92.26(1)°. Z = 4.

Specimen #48. Paralammerite. Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia. FOV 3.0 mm.