摘要
平河锡矿大地构造位置上处于南岭东西向成矿构造带中段北缘,花山-姑婆山-鹰阳关东西向岩浆构造带和道县-河路口南北向拗褶带复合交汇部位,该区岩浆岩多期次侵位,构造发育,成矿条件十分有利。区内锡矿化与中侏罗世姑婆山岩体密切相关,受断裂构造控制。矿床成因属高温岩浆气水热液交代型锡矿床。目前区内已发现和控制了规模较大的5、2、3号等3条锡矿脉,圈出锡矿体6个,其中5-1号矿体规模较大、品位较高。矿体长140m~350m,厚0.37m~4.28m,锡品位0.16~0.95×10-2。矿石类型为原生硫化物矿石,易选。下文中主要对该区地质特征、控矿条件及找矿标志进行探讨,希望能对区内找矿工作提供一些借鉴与参考。
The Pinghe tin deposit is located in the northern margin of the middle part of the East-West metallogenic structural belt of Nanling,the composite intersection of Huashan Guposhan yingyangguan East-West magmatic structural belt and Daoxian helukou north-south fold belt.The magmatic rocks in this area are emplaced for many times,the structure is developed,and the metallogenic conditions are very favorable.Tin mineralization in the area is closely related to the Middle Jurassic Guposhan rock mass and controlled by fault structure.The genesis of the deposit belongs to high temperature magmatic gas hydrothermal metasomatic tin deposit.At present,three large-scale tin veins have been found and controlled in the area,including No.5,No.2 and No.3,and six tin orebodies have been delineated,among which No.5-1 orebody is of large scale and high grade.The ore body is 140m~350m in length,0.37m~4.28m in thickness and 0.16~0.95×10-2 in tin grade.The ore type is primary sulfide ore,which is easy to be beneficiated.In the following,the geological characteristics,ore control conditions and prospecting indicators of the area are discussed,hoping to provide some reference for the prospecting work in the area.
作者
唐亚宾
TANG Ya-bin(team of Hunan Bureau of Geology and mineral exploration and development,Yongzhou 425000,China)
出处
《世界有色金属》
2021年第7期66-67,共2页
World Nonferrous Metals
关键词
平河矿区
锡矿
地质特征
控矿条件
找矿标志
江华县
Pinghe mining area
tin deposit
geological characteristics
ore controlling conditions
prospecting criteria
Jianghua county
