Petrographie analysis at Lojing, Gua Musang Kelantan

Abstract

A petrographic analysis was conducted to identify the mineral contents containing in the rock samples collected at study area located in Lojing, Gua Musang. The geology of the study area consists of metasedimentary rocks. There are six hand specimens collected and analysed using petrographic microscope. The limestone and carbonate rock is found at the study area. It has been subjected to some stress to such an extent that some of the grain boundaries have been modified by pervasive pressure solution of stylolites. Pressure solution is the process whereby this limestone has undergone selective dissolution to the extent that the grain boundaries were modified into thin dark n sutured seams. The rocks contain also microcrystalline to cryptocrystalline silica clasts which occur dispersed throughout the matrix. The petrographic analysis results show that the minerals contain in the six rock samples are micrite, bioclast, microspars, deformed quartz, K-feldspar, lithic and clayey carbonate lithic. The major minerals contained in the rocks are micrite and bioclast.