Abstract:

The Jiashengpan lead-zinc-sulfur deposit, located in Langshan-Zhaertaishan mineralization belt in the western part of northern margin of North China Platform, rich in Mesoproterozoic Zhaertaishan Group, is obviously stratabound and controlled by synchronous fault. The ore bodies are mainly composed of layered, conglomeratic and disseminated ores. The sulfur isotopic compositions of the sulfides from ores show that the values of δ³⁴S from the early depositional ores ranging from 17.0‰ to 31.5‰ with an average of 23.9‰ are similar to the values of δ³⁴S from the late reticulated ores ranging from 13.1‰ to 31.1‰ with an average of 24.1‰, indicating the same origin from sea sulphate. The late hydrothermal event is weak and the volcanic activities have little effect on the mineralization. The values of δ³⁴S from the host rocks ranging from 7.7‰ to 15.1‰ with an average of 10.2‰, are smaller than those of the ores obviously and belong to the marine deposition. The Varisian granite to the north of the ore bodies has limited effect on the ore bodies.

Key words: sulfur isotope, SEDEX-typed deposit, Jiashengpan lead-zinc-sulfur deposit, Inner Mongolia