Volcanic Glass ( Perlite )

Perlite is a volcanic glass known in the 3rd century BC.The exact details of the discovery of perlite have been lost over time, and there is disagreement about the rediscovery of perlite as a commercial material. Some scientists believe that perlite is caused by hydration of horseradish and the water in it, is molecular and hydroxyl. The ratio of the amount of these two types of water depends on the amount of calcium and magnesium oxide. Perlites are unstable and begin to crystallize over time and then lose their original properties. Most of high-quality perlites belong to the third and fourth geological periods. If perlite becomes altered, it will converted to montmorillonite, opal and chalcedony. Perlite in Iran For the first time in Iran in 1971 J. Eftekharnejad, in the southwest of Ferdows on the Paleogene vulcanites of the area, finds and studies a large layer of obsidian. He later finds out that this area of the wide horizon is being traced And in principle, perlite features are widely evident in this area. During geological surveys in the Miyaneh region, it again observes perlite features in the volcanic areas of this region. In order to explore, groups are sent to the area, and after reviewing the results of the preliminary studies, a wide perlite horizon in the area is finally illuminated. Due to the proximity of this horizon to the sales market, further exploration work on this horizon will lead to the issuance of exploration licenses.