Copper World

Lehmannite

IMA formula: Na18Cu12TiO8(AsO4)8FCl5

Specimen #222. Lehmannite. Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia. FOV 4.6 mm.