Characteristics of ore minerals in the Kulundi lead-zinc deposit, Elunchun County,Inner Mongolia

The Da Hinggan Mountains is one of the most important polymetallic metallogenicbelts in China, where the Kulundi lead-zinc deposit was discovered in recent years. This paper, in combination with field investigations, carried out a detailed study on the characteristics of ore minerals in the Kulundi deposit. The result shows that the ores in the Kulundi deposit can be divided into four types, zinc-lead ore, zinc-lead-copper ore, lead-copper ore and lead ore, respectively. The ore textures can be classified as crystalline texture, metasomatic texture, solid solution separation textrue and crush texture. The primary ore structures are veinlet, dissemination, block and mass, with banded structure as secondary. Comprehensive mineralogical characteristics indicate there are two mineralizationstages. The first is sphalerite- chalcopyrite stage, which can be further divided into three sub-stages of molybdenite-magnetite, pyrite-sphalerite and sphalerite- chalcopyrite, respectively, and the second is galena stage, which is comprised of galena, sphalerite, pyrite and chalcopyrite, etc.