Composition and source study of ore-forming fluid in Changkeng gold-silverdeposits, Guangdong province, China

There are several types of fluid inclusions in the deposits. Relative conte nt of different types of inclusions show that fluid inclusions are mainly o rganic. The ore-forming fluids are the organic gas-rich with salt water. Ho mogenization temperature of the deposits are 160 similar to 260 degreesC ma inly, but the salinity of gold ore-forming fluid is higher than that with s ilver. So they are in different stages. Raman spectrum of inclusions shows the composition of ore-forming fluid has closely related to the country roc ks. Ore-forming fluid is the organic-rich basin fluid.