Sujoy Ghosh¹, Kishan Tiwari¹, Masaaki Miyahara², Arno Rohrbach³, Christian Vollmer⁴, Eiji Ohtani⁵ and Dwijesh Ray⁶, (1)Indian Institute of Technology Kharagpur, Department of Geology & Geophysics, Kharagpur, India, (2)Hiroshima University, Higashi-Hiroshima, Japan, (3)University of Münster, Institute for Mineralogy, Münster, Germany, (4)Westfälische Wilhelms University, Institute for Mineralogy, Münster, Germany, (5)Tohoku Univ, Sendai, Japan, (6)Physical Research Laboratory, Planetary Sciences Division, Ahmedabad, India