TY - JOUR ID - 1908 TI - First Finding of Satin Spar Gemstone in Iran, Folded Zagros Zone, Fars Region JO - Journal of Mining and Environment JA - JME LA - en SN - 2251-8592 AU - Zolfaghari, A. AU - Barzegar, N. AU - Amini, M. AD - Department of Earth Sciences, Faculty of Sciences, Shiraz University, Shiraz, Iran Y1 - 2020 PY - 2020 VL - 11 IS - 4 SP - 1039 EP - 1046 KW - Satin Spar KW - Chatoyancy KW - Gemstone KW - Zagros Zone KW - Iran DO - 10.22044/jme.2020.9644.1877 N2 - The gypsum mineralization occurred in the form of Satin Spar and Selenite in the south and southwest of the Fars province in the folded Zagros zone. In this region, Satin Spar mineralization has been formed as stratiform between the red marl and siltstone units of Late Miocene–Pliocene in Agha Jari, Bakhtiari, and the Gachsaran formations. The reserves of Satin Spar in this area are at least 200,000 tons. Satin Spar due to its chatoyancy, has been able to distinguish itself from gypsum. This beautiful light phenomenon (chatoyancy) results from the regular and parallel arrangement of the Satin Spar fibers. The mineral was first identified by its physical properties, and then by the X-ray diffraction analysis. They were also examined by scanning electron microscopy for its structure and also the structure of fiber crystals and their optical properties. In order to examine the polishing condition of Satin Spar, several samples of this gemstone were also selected for fantasy and Cabochon cut. For the first time in Iran, the exploration of Satin Spar gemstone in the Fars region can be a model for its discovery in the other evaporative formations in the country. UR - https://jme.shahroodut.ac.ir/article_1908.html L1 - https://jme.shahroodut.ac.ir/article_1908_360770d5a3d48f690221d22cb2646113.pdf ER -