Dachang district, Guangxi Province, China, has one of the largest tin-polymetallic ore field in the word. Kangma deposit is located at the eastern part of Dachang ore field and the orebodies mainly occur as veins hosted in Devonian black shale. Petrography, microthermometry, and laser Raman spectroscopy, combined with scanning electron microscope cathodoluminescence(SEM-CL) analyses of fluid inclusions were used to characterize the chemical evolution of ore fluids in Kangma deposit. Results show that quartz...