豫西陆院沟蚀变岩型金矿床黄铁矿标型研究

发布时间：2018-05-10 13:27

本文选题：蚀变岩型金矿床 + 黄铁矿形态结构标型　；参考：《地学前缘》2017年02期

【摘要】：陆院沟破碎蚀变岩型金矿床主成矿期载金黄铁矿存在原生、改造、增生、新生以及多型叠加等结构类型,这种单期黄铁矿显示复杂成矿过程的现象说明对黄铁矿的形态结构分类和原位测试是极为必要的。在宏观期次研究的基础上,对成矿期黄铁矿进行形态结构分类和原位分析,结果显示,载金黄铁矿是预富集期、主成矿期和晚成矿期3个阶段的产物,3个阶段普遍显示富S亏Fe、富Ni亏Co的沉积型特征,晚期显示了亏硫富铁的变质型叠加特征。综合研究认为,黄铁矿的形态、结构和成分标型是不同成因及演化过程的产物,对矿床成因判别和找矿勘探具有重要的指示意义。
[Abstract]:The main ore-forming period of the Luyuangou broken altered rock type gold deposit is the existence of primary, reformed, proliferative, new and polytypic superimposed structural types of gold-loaded pyrite. This phenomenon of single stage pyrite showing complex metallogenic process shows that it is very necessary for the classification of morphology and structure of pyrite and for in-situ measurement of pyrite. On the basis of macroscopical stage studies, the morphological and structural classification and in-situ analysis of pyrite in metallogenic period are carried out. The results show that gold bearing pyrite is preenriched. The products of the three stages of the main metallogenic stage and the late metallogenic stage generally show the sedimentary type characteristics of rich S deficient Fe and rich Ni deficiency Co and the late stage shows the metamorphic superposition characteristic of the deficiency of sulfur and iron. It is considered that the shape, structure and composition of pyrite are the products of different genesis and evolution process.
【作者单位】：长安大学地球科学与资源学院;湖北省地质局第六地质大队;紫金矿业洛宁华泰矿业开发有限公司;
【基金】：国家自然科学基金项目(41602064) 中央高校基本科研经费项目(2014G1271067,310827153408,310827151057) 陕西省基金项目(2016JM4001)
【分类号】：P618.51

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