Dr. L.G. Gwalani is a Reader in Geology at Nagpur University. He obtained his Ph.D. degree in 1976 from the University of Mumbai. The thesis was later selected for the UGC Book grant award and it was published in 1981.He has international research experience; working with institutes in France (University of Paris), Spain (University of Madrid), Australia (Western Australia, Reife). Dr. Gwalini has several research publications in national and international journals to his credit. He is a guest editor of the Journal of Asian Earth Sciences (ELSEVIER) Publishers. He is a member of the Ph.D. examination committees in University of Paris VI and University of Western Australia.He has travelled to Europe, U.S.A., U.K., Australia, Japan, Thailand and China in connection with his research and participation in conferences. His main research and participation in confernences. His main research interests are mineralogy, petrology and geochemistry of alkaline rocks, carbonatites and pegmatites.