摘要
新发现的后沟锰矿床位于南秦岭磷锰成矿带的中东段,目前已发现3条磷锰矿(化)带并圈定出优质锰矿体3个,均赋存于下寒武统塔南坡组泥质细碎屑岩-碳酸盐岩建造不同岩性段内。作者在对后沟矿床成矿地质背景和矿床特征研究基础上,对该锰矿的成矿模式和优质锰矿找矿标志进行了分析探讨,认为本区优质锰矿的形成经历了沉积、变质改造和次生氧化富集的成矿阶段,提出含锰灰岩(白云质灰岩)和含黄铁炭质片岩为本区的锰矿找矿标志,磷、锰分离成层成矿是找寻优质锰矿的找矿标志。
Hougou manganese deposit has been found recently. It is situated in the middle - east segment of the south Qinling manganese metallogenic zone. Three high quality Mn orebodies have been found in the area. On the base of manganese metallogenic background and ore characters, metallogcnic models and prospecting indications of high quality manganese ores in the Hougou area is discussed. It is shown that formation of high quality Mn ores underwent multiple stages like sedimentary, metamorphic transformation, and secondary oxidized - enrichment. Mn - bearing limestone, including dolomite limestone, and pyritic carbon schist can be considered as prospecting indications. Phenomena of manganese ores apart from phosphorus can be considered as a sign to find high quality manganese ores.
出处
《地质与勘探》
CAS
CSCD
北大核心
2008年第2期38-44,共7页
Geology and Exploration
基金
国土资源部矿产资源补偿费矿产勘查项目“陕西省勉县后沟锰矿普渣”(编号:国土资发[2005]294号)
中央地质勘查基金项目(编号:2007611007)资助
关键词
陕西勉县
后沟
锰矿成矿特征
成矿模式
找矿标志
manganese metallogenic characteristics, metallogenic models, prospecting indication, Hougou manganese deposit, Mianxian, Shanxi province
