Abstract:

The Shiganghe mining area is generally held between the Nujiang fault zone and the Lan⁃

cang River plate junction zone. On the basis of systematically collecting the geological data of the mining ar⁃

ea，combined with detailed field geological survey work，the metallogenic geological background of the min⁃

ing area is systematically determined，and the metallogenic conditions and metallogenic models of the depos⁃

it are summarized.It is concluded that the spatial distribution of the tin-tungsten ore belt in the deposit is

controlled by the‘歹’-shaped structural system in western Yunnan. The Shiganghe tin-tungsten deposit is

generally produced in the interlayer fracture zone，and the spatial location is located in the outer contact

zone of the Zhibenshan rock mass.The magmatic activity in the area is intense and frequent，and the acidic

granite from the late Yanshan period to the Himalayan period is closely related to the mineralization of the

deposit.The geological structure in the mining area is complex. The Zhibenshan anticline，the Shiganghe hor⁃

izontal fold and the NW-trending fault group jointly control the output of the ore (mineralization) body.The

deposit is strictly controlled by tectonic-magma-metamorphism，and generally belongs to high-medium

temperature hydrothermal deposit related to migmatization derived magma.

Key words:

tin-tungsten deposits, metallogenic conditions, metallogenic model