- Small Cabinet, 5.5 x 4.2 x 3.4 cm
- Kudriavy (Kudryavyi) volcano, Iturup Island, Kuril Islands, Sakhalinskaya Oblast', Far-Eastern Region, Russia
Rheniite is the only known mineral with Rhenium as its primary metallic constituent and as such is a fascinating species. It occurs at a volcanic vent in this remote area of Russia, and scientists have to climb down into hot crevasses to find the stuff. This is a REALLY RICH specimen with LOTS of silvery bright microcrystalline rheniite.