Tenorite : CuO
As recorded:
Glavnaya Tenoritovaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
Photo added to mindat.org
“Intergrowths of spear-shaped and needle-like tenorite crystals with split and twinned tenorite crystals of another type (in the center of the frame) grown on volcanic slag in the fumarole wall. FOV in height 4,7 mm.”
Tim Pashko - 16th March 2019
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