Rheniite

Rheniite represents the only distinct rhenium-bearing mineral species (rhenium sulfide) and was approved in 2004. Rheniite is rare and occurs as small, triclinic (pseudo hexagonal), silver-gray to black metallic, opaque to red translucent crystals. It is a rare species formed under very hot conditions in volcanic fumeroles at the type locality: Kudriavy volcano (Kudryavyi), Iturup Island, Kuril Islands, Sakhalinskaya Oblast, Far-Eastern Region, Russia.

You can buy these rare red, metallic crystals online from The Arkenstone, www.iRocks.com to add fine mineral specimens to your collection.