山东省沂水县下儒林钛铁矿矿床地质特征

Geological Characteristics of Xiarulin Ilmenite Deposit in Yishui County in Shandong Province

摘要:

下儒林钛铁矿位于沂沭断裂带内汞丹山凸起的东部边缘,浮来山白粉子断裂的西侧。含矿岩石(矿化体)为侵入于新太古代泰山岩群中的新太古代晚期含钛磁铁矿角闪石岩,其呈透镜状或带状发育于泰山岩群中或被捕虏(残留)于古元古代吕梁期傲徕山弱片麻状中粗粒二长花岗岩内,其产状与新太古代变质地层基本一致。矿区内圈定矿体5个,矿体长240~1000m,宽14~140m。矿石TFe含量一般为15%~16%,最高为21.84%,矿床平均为15.55%;TiO2含量一般为5%~8%,最高为10.13%,矿床平均为6.54%。矿石中TiO2与TFe含量变化呈正相关关系。

Abstract:

Xiarulin ilmenite deposit locates in east part of Gongdanshan uplift in Yishu fault belt, and west part of Fulaishan-Baifenzi fault belt. Neoarchean titaniforous magnetite amphibolites whic intruded into Neoarchean Taishan group are its major ore-bearing rock. It developed as pod and belt type in Taishan group , or trapped by medium-coarse low gneiss mozonitic granites in Aolaishan formation of Mesozoic Lvliang group. It has the same occurrence with Neoarchean metamorphic strata. 5 orebodies have been circl...