摘要
煤系石墨是煤及煤系碳质页岩等在岩浆热接触变质及构造变质作用下形成的,是石墨矿产的重要组成部分,也是煤系非金属矿产的一种,属于战略性新兴矿产。文章综述了前人对煤系石墨的研究成果及其勘探开发现状,着重讨论了构造作用在煤系石墨形成过程中的作用,并强调煤在石墨化过程中微观结构的演化。本文认为,现阶段对煤系石墨的成矿机制和赋存规律的认识不够深入,缺少针对性的勘查规范和相关标准,同时也将完善石墨成矿机制和赋存规律、建立煤与石墨的鉴别标志、确定煤系石墨资源评价方法、划分成矿带并调查煤系石墨的资源量定为下一步在煤系石墨调查评价中的重点研究方向。
Coal-based graphite is formed by the effect of magmatic-thermal contact-metamorphism and tectonic metamorphism in coal and coal system carbonaceous shale, which is an important part of graphite mineral, as well as one of coal-measures nonmetal mine resources. Coal-based graphite has been a kind of strategic emerging minerals. In this paper, the research results of the coal-based graphite and the present situation of the exploration and development of the graphite by the predecessors are summarized. The role of structure in the formation of graphite in coal measures is emphatically discussed, and the evolution of the microstructure in coal during the process of graphitization has been emphasized. The article argues that the understanding of metallogenic mechanism and occurrence regularity of coal-based graphite is not deep enough, and there is a lack of targeted exploration norms and standards. At the same time, the next key research directions in the investigation and evaluation of coal-based graphite has been determined in this paper. To be specific, perfecting the metallogenic mechanism and occurrence regularity of graphite, establishing the makers to differentiate coal from graphite, determining the evaluation methods of resources in coal-based graphite, as well as the metallogenic belt division and the resources investigation in coal-based graphite should be included.
出处
《地学前缘》
EI
CAS
CSCD
北大核心
2017年第5期317-327,共11页
Earth Science Frontiers
基金
中国地质调查局地质调查项目(DD20160187)
关键词
煤系石墨
成矿机制
赋存规律
资源评价
coal-based graphite
metallogenic mechanism
occurrence regularity
resource evaluation
