金成矿作用的二重性及其指导意义
Duality of gold mineralization and guiding significance
-
摘要: 金成矿作用的二重性,突出表现在金的成矿作用中的活化、迁移和富集沉淀各个阶段,尤其金在富铁贫硫的条件下,表现出强烈的亲铁性,金主要和铁矿物伴生;金在贫铁富硫的条件下,表现出强烈的亲硫性,金主要和硫化物伴生;金在富铁富硫的条件下,又同时表现为亲铁亲硫性,金主要和黄铁矿(FeS2)伴生。在找矿过程中我们可以根据矿石中铁矿物、硫矿物的富集状况,对金矿进行成矿预测,指导区域性找矿,合理的圈定矿体;同时对金矿地质设计、矿山远景经济评价以及研究延长矿山使用年限都具有重要的技术经济价值。Abstract: Duality of gold mineralization is notably shown in the various phases such as activation,migration and enrichment and precipitation.Especially under the conditions of rich iron and depleted sulfur,gold shows strong pro-ferrous and gold mainly associates with iron ore.Under the conditions of depleted iron and rich sulfur,gold shows strong sulphophile affinity and gold mainly associates with sulphide.Under the conditions of rich iron and rich sulfur,gold shows strong sulphophile affinity and pro-ferrous.And gold mainly associates with iron pyrite(FeS2).During the course of finding mineral resource,we can predict mineralization of gold mine and give a proper limit of ore body in terms of iron and sulfur minerals enrichment in the ore.At the same time,it also has significant technical and economical values on gold mine geological design,mine prospect economy evaluation and mine service life extension.
下载: