Urusovite

Urusovite is a rare copper arsenate mineral with formula: CuAlAsO5. It is a monoclinic -prismatic light green mineral.

Its type locality and only reported occurrence is in the Novaya fumarole , North Breach, Great Fissure eruption, Tolbachik , Kamchatka It was named after Vadim Sergeevich Urusov, crystal chemist of Moscow State University It was approved by the International Mineralogical Association