四川省南江县甘树坪铁矿地质特征及成因

Sichuan province Nanjiang County Ganshuping iron ore geological characteristics and genesis

南江县甘树坪铁矿大地构造归属于扬子地块,位于秦岭造山带和四川盆地稳定克拉通之间的前陆褶皱冲断带;矿区内主要出露地层为元古界火地垭群麻窝子组,岩浆岩主要有澄江期赵家河单元辉长苏长岩、两河口单元石英闪长岩和闪长岩,矿区构造总体为一单斜构造;矿体为辉长苏长岩体的一部分,矿体与围岩无明显界线,仅以样品分析结果圈定矿体,矿体品位较低;甘树坪铁矿为岩浆分异与结晶分异共同作用形成。

Nanjiang Gan Shu Ping iron tectonic belonging to the Yangtze block, located in the foreland fold between Qinling Mountains orogenic belt and Sichuan basin of the stable craton thrust belt in the mining area; the main strata are the Proterozoic HUODIYA group ]Via JINWOZI group, magmatite are mainly Chengjiang period Zhao Jiahe Su Changyan, the two unit gabbro quartz estuary unit the diorite and diorite, structure of mining area is generally a part of the monoclinic structure; gabbro norite rock, orebody and wall rock is no obvious boundary, only the results of sample analysis the orebody, ore grade is low; Gan Shu ＂Ping iron ore ofmagmatic differentiation and crystallization differentiation formation.