Abstract

• The study area is located at the northwestern part of Mawlamyine, Paung Township, Mon State. It lies between latitudes 16˚ 39' 00" to 16˚ 43' 00" N and longitudes 97˚ 26' 00" to 97˚28' 00" E. One-inch topographic map sheet no. is 94 H/5 of Myanmar Survey Department. The study area lies within a part of the Mogok belt which is extending from Putao in the north through Mogok to Mottama in the south. The research area also lies within a part of the Karen- Tenasserim unit. Igneous rocks of the research area are foliated biotite granite, porphyritic biotite granite, gneissose granite, biotite microgranite, tourmaline granite, schorl rock. Microgranite sill, leucogranite dyke, pegmatite dykes, aplite veins, quartz and quartzofeldspathic veins occur as minor igneous rocks. According to the diagrams, all igneous rocks are plotting in the "Granite" field. Due to field observations and geochemical characteristics, igneous rocks of the study area confirm in "S" type".