Abstract

• The study area falls 24.3 km southeast of Thazi at Mandalay Region that covers two types of rocks; igneous and metasedimentary rocks. Meta-sedimentary rocks consist calc-silicate rocks and skarn. Calc-silicate rock occurred as roof-pendant, visible ridges and furrows nature. Skarn are exoskarn that subdivided into garnet skarn and garnet-clinopyroxene skarn. It contains garnet, diopside, plagioclase, quartz and tremolite. According to petrochemical study, the massive garnetclinopyroxene skarn exhibit much flatter profiles in Chondrite-normalized REE patterns that indicating the garnet may preferentially concentrate HREE. In Harker variation diagrams, SiO2, TiO2 and K2O show a systematic decrease from diorite to skarn and FeOt display general increase to skarn rocks due to mass transfer during metasomatism. Cu, Zn and Y enrichment in skarn is relative to granite. Sr exhibits a perceptible decline in the direction of exoskarn.