Abstract
The mineral composition of a sedimentary rock is one of its most important attributes. The presence or absence of a given mineral may be a clue to the history of a rock. Beach rock is one of the types of sedimentary rock. Beach rock is a peculiar type of formation when compared to other types of rock formations. It is commonly found along the tropical and subtropical coasts. It needs intensive and extensive investigation on its formation. Beach rock samples were collected from a vast area extending from Rameswaram to Kanyakumari of South East coast of Tamilnadu, India and were subjected to i.r. studies. Qualitative analysis was carried out to determine the major and minor constituent minerals present in the samples, from the band positions or the locations of the different peaks. In addition to the band positions, the sharpness or diffuseness of bands is helpful in the identification of mineral components. The i.r. study on these beach rocks was found to be highly useful in identifying the various minerals in beach rocks.
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