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红柳疙瘩岩体位于塔里木板块北缘的北山裂谷带,岩体侵位于下石炭统红柳园组,主要岩石类型为含橄榄石角闪辉长岩和角闪方辉橄榄岩,岩石中赋存钛铁矿,具有全岩矿化特点。岩体出露长度6 km,宽度0.5 km,呈NE向展布,岩体经逆断层作用推覆至中生代碎屑岩之上。本文对矿区橄榄岩开展主要元素分析,研究结果显示岩石m/f比值为0.16~0.33,为富铁质超基性岩,具有低碱(Na_2O+K_2O)、MgO,高TiO_2、Al_2O_3和TFe(Fe_2O_3+FeO)特征。AR-SiO_2和FAM图解显示岩体原始岩浆属亚碱性拉斑玄武系列;岩体具有较低的Mg#(0.30~0.49),说明岩浆演化过程中发生了明显的结晶分异作用,钛铁矿的富集与岩浆的结晶分异作用相关。红柳疙瘩钛铁矿经深部钻探工程控制,圈定钛铁矿36条,主要矿体有7条,长度200 m~700 m,控制斜深75 m~150 m,平均厚度4.02 m~13.97 m,呈层状、不规则透镜状,TiO_2平均品位6.37%~7.19%,TFe品均品位为14.60%。对该岩体含矿性分析,有助于北山地区的勘查找矿。
The tainted rock mass is located in the Beishan rift zone in the northern margin of the Tarim plate. The rock mass is located in the Hongliuyuan Formation of Lower Carboniferous. The main rock types are olivine hornblende and hornblende zeolite, Ilmenite, with the characteristics of whole rock mineralization. The length of rock mass exposed is 6 km and its width is 0.5 km. It is NE-trending, and the rock mass is thrust to the Mesozoic clastic rocks by reverse fault. In this paper, the main elemental analysis of peridotites is carried out. The results show that the rock m / f ratio is 0.16-0.33, which is an iron-rich ultrabasic rock with low alkali (Na2O + K2O), MgO, high TiO2, Al2O3 and TFe Fe_2O_3 + FeO) characteristics. The AR-SiO_2 and FAM diagrams show that the primary magmatic rocks of the rock mass are subbasin pull-out basalt series; the rock mass has lower Mg # (0.30-0.49), which indicates that significant crystallization differentiation occurs during magmatic evolution. The ore enrichment is related to the crystallization differentiation of magma. Ilmenite piranite ilmenite is controlled by deep drilling project, and 36 ilmenite are delineated. There are 7 main ore bodies with length of 200 m ~ 700 m and control depth of 75 m ~ 150 m with an average thickness of 4.02 m ~ 13.97 m. Layered, irregular lenticular shape, the average grade of TiO_2 6.37% ~ 7.19%, TFe average grade was 14.60%. The ore-bearing analysis of the rock mass is helpful for prospecting prospecting in Beishan area.