Oxygen isotope analyses of the samples collected systemically from six bores of the 16th prospecting line of Changkeng gold-silver deposit indicate that the δ~(18)O values of rock increase from the deeper silver ore body to the shallower gold ore body and from the center of ore body to the wall rock,which consistent with the decreasing of alteration intensity of the wall rocks.

The genesis of siliceous rocks in the Changkeng gold-silver deposit, Guangdong Province;

From south to north there exist copper,molybdenum and gold-silver deposits,copper ore and gold metallization in turn in the studied area,which are distributed as belts in directions WE and NS.

： Zhilingtou gold－silver deposit is a Yanshania volcanic－subvolcanic lower－median temperature hydrothermal deposit． The REE and Pb，S isotopes indicate that ore－forming material derived from volcanic－subvolcanic hydrothermal solution

Yangshu Au-Ag deposits occurre in the transitional belt of interbedded marbleof Dashiqiao F.

Gaojiapuzi Au-Ag deposits occurre in the transitional belt of interbedded marble of Dashiqiao F.

The geological features and metallogenic model of Shanmen Ag-Au deposit;

The major silver minerals in the Hujiajian Ag-Au deposit include tetrah-edrite-freibergite, pyrargyrite, argentite-acanthite, stephanite, miargyrite, an-dorite, diaphorite, terekovite and canfieldite, etc.