The major and minor minerals are qualitatively determined by using FTIR technique. The Nicolet avatar 360 series available in Centralized Instrumentation and Service Laboratory (CISL), Annamalai University, Chidambaram, Tamilnadu, India is made use of this in all the present work for recording the FTIR spectra of all the samples at room temperature. The samples are usually subjected to various pre-treatments in order to remove organic matter and certain other materials to improve the quality of the spectrum. The samples are mixed with Potassium Bromide (KBr) at various ratios like 1:10, 1:20, 1:30, 1:40 and 1:50. The pellets were prepared and the spectra were taken. The maximum absorption and large number of peaks were observed for the samples in the ratio of 1:20 (sample-KBr). The spectra were taken in the region of 4000–400 cm1. The instrument scans the spectra 16 times in 1 min. The resolution is ±4 cm1 and its accuracy is ±1 cm1.