Concentration of rhenium and other rare metals in gases of the Kudryavy Volcano (Iturup Island, Kurile Islands).

The article offers information on the concentration of rhenium at the Kudryavy Volcano in Iturup Island, Kurile Islands, Russia. The authors noted a 2002 experimental study of the Institute of Mineralogy, Geochemistry and Crystal Chemistry, which demonstrated crystallization of rhenium from hot fumarole gases with temperature of 500-550 degrees Celsius. This finding is the first in the world using a natural sorbent, zeolite. However, 2009 data on the metal concentration in gases at the same site are contradictory, with rhenium content differing by three orders of magnitude. In order to obtain a real data on rhenium concentration, kinetic method and metals in solutions approach were employed.