山东栖霞石榴子石矿床特征及其成因探讨

Characteristics and Origin of Garnet Deposit in Qixia County of Shandong Province

摘要:

栖霞石榴子石矿床位于华北板块胶辽隆起区南部栖霞马连庄断凸构造单元。该矿床属片岩型石榴子石矿床。含矿层位为古元古代荆山群禄格庄组安吉村片岩段。矿层一般长400~3450m，平均1250m。斜深15.3~306.0m。厚度2.00~23.34m，平均8.34m，厚度变化系数50％左右。吕梁运动使荆山群发生了强烈的区域变质作用，变质程度达到高角闪岩相，生成了应力矿物石榴子石和矽线石，石榴子石富集成矿。

Abstract:

Qixia garnet deposit is located in QixiaMalianzhuang faultconvex in south part of Jiaoliao upliftt of northern China landmass. It belongs to schist type garnet deposit. The ore bearing rocks(ore bodies) is sillmanite garnet biotite schist in Anjicun section of Lugezhuang formation in Paleoproterozoic Jingshan group. General length of the deposit is 400~3450m, average length is 1250m, slant depth is 15.3~306.0m, thickness is 2.00~23.34m, average value is 8.34m and variation ratiois about 50%. Lvliang movement caused regional metamorphism of Jingshan group, and metamorphism level can reach highamphibolite facies. Stress minerals have been formed, including garnet and sillmanite. Garnet enriched and formed deposits.