The geochemistry characteristics of the stable isotope in Dongsheng deposit and its geologic signification

Mineral vein of Dongshan deposit in Linglong gold field is numerous,the relation of mineral vein is complex and mineral vein have the obvious phenomenon of convergence,separation,reunion.

The paper describes the formation mechanism of iron and phosphorous ore deposits in the Ningwu area and discusses on the migration mode and metallogenic process of magmatic and hydrothermal iron,phosphorous,titanium,REE,etc.

In order to find out a suitable method to judge the feasibility of development for nonmetallic deposit,taking advantage of a series data of nature and price,a comprehen- sive analyses of the Yuejiashan phosphorus deposit in Shifang sity,Sichuan province,such as natural/economic conditions for development,and so on,have being in progress in this paper.

Make an approach to a reasonable feasibility analysis model for the exploitation of nonmetallic ore deposits on the basis of comprehensive analysis of geological features, physicogeographical , economic geographical and economic conditions of industrial exploitation of the Yuejiashan phosphorite deposit, Shifang, Sichuan.