On the Genesis of Uranium Deposit 720 with Special Reference to the Double Solution-Mixing Model

摘要

Presented in this paper is an approach to the analysis of 'series-stage'division.The processes of hydrothermal evolution involved in ore deposition,the factors affecting the enrichment of uranium and the source of ore forming elements in uranium deposit 720 are also discussed .In addition,the ore-forming tem-perature and pressure as well as the pH,Eh and chemical composition of ore-forming medium are studied with reference to the fluid inclusion data available.A double solution-mixing model has been proposed to explain the genesis of the uranium deposit studied.