No abstract

Yueshan Cu-polymetallic deposit Located between the Yangtze Plate, the Qinling-Dabie orogenic belt and is characterized by excellent metallogenic conditions.This paper attempts to disclose the hydatogenesis mechanism of Yueshan Cu-polymetallic deposit. The metallogenic mechanism of material and fluid sources under the action of heat sources was discussed through fluid inclusion analysis. In this way, the physical-chemical conditions and fluid composition of hydatogenesis were determined, revealing the fluid and temperature features of hydatogenesis. It is concluded that the metallogenic fluid of Yueshan Cupolymetallic deposit belongs to the type of Na++Ca2++K++Mg++Cl-(SO42-), and the hot magma fluid was mineralized under 450~521 ℃. Yanshanian magmatic intrusion provided heat source for metallogenic hydrothermal fluid of Yueshan Cu-polymetallic deposit. The fluid activity underwent skarn hydrothermal stage and tectonic hydrothermal stage, and the skarn minerals formed in the early stage were superimposed and enriched.

The Alqal Copper-lead-zinc deposit isl ocated in the Tarim plate of the Xinjiang. It has undergone multiple stages of tectonic mineralization and is an important deposit in the Kuslafu metallogenic belt of the West Kunlun area. Based on the analysis of the metallogenic geological conditions of the deposit, The composition of fluid inclusions in mining area was studied, The characteristics of metallogenic fluid are discussed. The results show that the uniform temperature of gas-liquid two-phase fluid inclusions in the Alqal deposit is between 145°C and 267°C, the average uniform temperature is 191°C; the salinity is 0.71% to 14.87%, and the average salinity is 6.33%. The estimated metallogenic pressure is about 135MPa, and the capture temperature is concentrated around 320°C. The ore-forming fluid has undergone multi-stage superimposed transformation, which is inconsistent with the characteristics of the typical MVT deposit, and it is a sedimentary transformation type deposit.

No abstract