马斜石墨矿床地质特征及找矿方向
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摘要
为了解石墨矿床的形成机理,分析了马斜石墨矿矿床区域地质背景、矿体地质特征和矿石构造。结果表明:马斜矿区石墨矿床产出Ⅰ和Ⅱ号矿体,Ⅰ号石墨矿体固定碳平均含量为8.24%,Ⅱ号石墨矿体固定碳平均含量为6.81%,石墨矿体呈现富碳高铝特征;马斜矿区石墨矿床为鳞片状石墨,矿石结构类型有鳞片粒状变晶结构、交代破碎结构和包含结构;石墨矿的原岩为炭质泥岩,在吕梁期经高温中压型区高绿片岩相-低角闪岩相的区域热动力变质作用后,炭质泥岩中的有机质在还原条件下发生脱氧、脱氢反应后形成鳞片状石墨。
In order to understand the formation mechanism of graphite deposit, the geological background, geological characteristics, ore structures of Maxie graphite deposit were analyzed.The results showed that Maxie graphite deposit produced No. 1 and 2 ore bodies. The average fixed carbon content was 8.24 % for No. 1 ore body, and 6.81 % for No. 2 ore body. Graphite ore body was rich in Carbon and Aluminum. The Maxie graphite mineral was scaly. The ore structure types included scaly granular crystalline structure, metasmic fracture structure and inclusion structure. The original rock of graphite mineral was charcoal mudstone. Due to regional thermodynamic metamorphism, organic matter in the charcoal mudstone deoxygenated and dehydrogenated under reducing condition and then formed scaly graphite.
In order to understand the formation mechanism of graphite deposit, the geological background, geological characteristics, ore structures of Maxie graphite deposit were analyzed.The results showed that Maxie graphite deposit produced No. 1 and 2 ore bodies. The average fixed carbon content was 8.24 % for No. 1 ore body, and 6.81 % for No. 2 ore body. Graphite ore body was rich in Carbon and Aluminum. The Maxie graphite mineral was scaly. The ore structure types included scaly granular crystalline structure, metasmic fracture structure and inclusion structure. The original rock of graphite mineral was charcoal mudstone. Due to regional thermodynamic metamorphism, organic matter in the charcoal mudstone deoxygenated and dehydrogenated under reducing condition and then formed scaly graphite.
引文
[1]杜庆洪,杨绍军.中国石墨行业现状及发展趋势[J].中国非金属矿工业导刊,2000,(06):8-9.
[2]罗大富,刘建安,苏提高.安溪青洋石墨矿床地质特征及其成因探讨[J].中国煤田地质,2005,(S1):31-33.
[3]肖克炎,孙莉,李思远等,我国石墨矿产地质特征及资源潜力分析[J].地球学报,2016,(05):607-614.
[4]李超,王登红,赵鸿,等.中国石墨矿床成矿规律概要[J].矿床地质,2015,(06):1223-1236.
[5]福建省地质调查研究院.1:25万周宁幅区域地质调查报告[R].福建:2007.219-233.
[6]莫如爵,刘绍斌,黄翠蓉,等.中国石墨矿床地质[M].北京:中国建筑工业出版社:1989.24-51.
[2]罗大富,刘建安,苏提高.安溪青洋石墨矿床地质特征及其成因探讨[J].中国煤田地质,2005,(S1):31-33.
[3]肖克炎,孙莉,李思远等,我国石墨矿产地质特征及资源潜力分析[J].地球学报,2016,(05):607-614.
[4]李超,王登红,赵鸿,等.中国石墨矿床成矿规律概要[J].矿床地质,2015,(06):1223-1236.
[5]福建省地质调查研究院.1:25万周宁幅区域地质调查报告[R].福建:2007.219-233.
[6]莫如爵,刘绍斌,黄翠蓉,等.中国石墨矿床地质[M].北京:中国建筑工业出版社:1989.24-51.