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International Journal of Recent Trends in Science and Technology, ISSN 2277-2812 E-ISSN: 2249-8109

Volume 12, Issue 2, September 2014 pp 323-328
Research Article

Petrographic and Chemical studies of Tertiary Lignite of Ratnagiri Coast of Maharashtra, INDIA

R A Suryawanshi

Department of Geology, Yashwantrao Chavan College of Science Karad, Karad Dist Satara 415124 Maharashtra INDIA.

Abstract

Tertiary Lignite of western Maharashtra is trapped in basalt and laterite and at places between laterite. These deposits are 50mts above MSL and 500mts away from sea coast. Lignite of Ratnagiri are studied petrographicaly, chemically and with SEM studies for their genesis, depositional environment and quality. The microlithotypes of lignite are recognized on the basis of shape and nature of maceral. The properties of the coal are mainly dependent on the relative abundance and the degree of mixing of maceral. From the study it has been observed that huminite maceral is present in abundance (72 to 90%), followed by irrtertinite and exinite which is very rare to absent. Lignite of Jaigarh is close to peat with high ash, low carbon and calorific value, more mineral matter. While lignite of Golap-Pawas area have distinct maceral content, high carbon and sulphur, low ash and mineral matter with high calorific value. Pyrite nodules concentration indicate reduced environment of deposition. Present study indicates lignite is deposited in estuarine to marine environment.