鲁西台上铁矿床地质特征及矿床成因

Geological Characteristics and Its Origin of Taishang Iron Deposit in Western Shandong

摘要:

台上铁矿床位于鲁西蒙阴县境内，为磁铁石英角闪岩型低品位铁矿床，成因上属沉积变质型铁矿床。矿体以条带状、透镜状为主；矿体规模较小，厚度、品位变化较大；主要矿石矿物为磁铁矿，其次为赤铁矿及褐铁矿，并可见少量黄铁矿；矿石主要呈细粒变晶结构，条带状及浸染状构造；矿石自然类型属需选贫铁矿矿石。矿体属泰山岩群雁翎关组的组成部分，与泰山岩群的形成与演化过程一致，在新太古代泰山岩群雁翎关组地层与岩浆岩接触带附近具较好的成矿远景。

Abstract:

Taishang Iron deposit is a low grade aimantine deposit in western Shandong. It belongs to meta-sedimentary iron deposit type. Its vein types of ore bodies are mainly banding and lenticular types. The scale of ore body is small, while its thickness and grade varied largely. The main ore minerals are magnetite, hematite and limonite, followed by small quantity of pyrite. The ore texture is fine grain size blastic, banded and disseminated texture. The natural type ofore is low grade aimantine which need to choose poor iron ore. The ore body is a component of Yanlingguan formation of Taishan group, and has the same evolution period with Taishan group. It has a bright ore forming future in the contacting zone between Yanlingguan formation in Neoarchean Taishan group and magmatic rocks.