Dmisokolovite

IMA formula: K₃Cu₅AlO₂(AsO₄)₄

Crystallography: Monoclinic. C2/c. a = 17.0848(12) Å, b = 5.7188(4) Å, c = 16.5332(12) Å, β = 91.716(6)°. Z = 4.

Specimen #45. Dmisokolovite (emerald green), shchurovskyite? (olive green), and bradaczekite (blue). Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia. FOV 3.7 mm.