Abstract

• The study area is situated in southern part of Thabeikkyin Township, Mandalay Regions. The study area is located in UTM map No 2296 01. The study area falls within the Mogok Metamorphic Belt, mainly composed of metamorphic rocks and igneous rock. The study area comprises gneiss, marble and garnet – diopside - calc – silicate rock. In gneiss unit includes biotite - gneiss and marble units includes graphite marble, phlogopite – diopside marble and grossularite - diopside marble. Garnet – diopside - calc – silicate rock is composed of calcite, quartz, feldspar (orthoclase, plagioclase), diopside, sphene, garnet, zircon and opaque minerals. Most of the calcite twin bands are giving tapering twin and its showing first order to upper higher order. These calcite twins are gradationally change small to large twins and change the colour because of due to the effect of deformation. According to the mineral assemblages, regional metamorphism (amphibolites facies) is recognized in the study area. The grade of the metamorphism in the study area is medium to high grade metamorphism.