INFRARED SPECTROSCOPICAL ANALYSIS OF SOME METAMORPHIC (GRANITE) ROCKS

Abstract

         The economic significance of rocks and minerals in fostering a nation's growth is underscored in this research topic, with a specific focus on India, notably the mineral - rich terrain of Tamil Nadu. The discourse navigates through various analytical methods employed for mineral scrutiny, centering on infrared-based identification. The investigation's objectives, encompassing the geological landscape of Tamil Nadu and strategic sample collection sites, are detailed. The intricate process of sample preparation for infrared studies is emphasized, along with meticulous procedures for spectrum recording and precautionary measures. Findings are interpreted against existing literature, emphasizing crucial parameters like crystallinity index, absorbance, and extinction coefficient. In the infrared analysis of rocks from diverse Tamil Nadu regions, a mineral profile emerges, featuring feldspar dioxide, garnet, chlorite, and quartz. Quartz, consistently present in all samples, is scrutinized through extinction coefficient comparisons. Keelaiyur in Madurai District stands out with the highest extinction coefficient, indicating superior quartz abundance and heightened crystallinity among samples. This research sheds light on the geological wealth of Tamil Nadu, accentuating the vital role of minerals in economic development.