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.
作者
梁飞达
LIANG Fei-da(No.4 Geology Team of Fujian,Ningde 352100,China)
出处
《能源环境保护》
2019年第2期52-55,共4页
Energy Environmental Protection
关键词
石墨矿
地质特征
马斜矿区
Graphite mineral
Geological features
Maxie mining area
