蓝田玉石矿地质特征及成因初探  

GEOLOGY AND GENESIS OF JADE IN YUCHUAN OF LANTIAN COUNTY,SHAANXI PROVINCE

作　　者：张娟霞[1] 罗保平 

机构地区：[1]中国地质大学,武汉430074 [2]陕西省地矿局第六地质队,临潼710600

出　　处：《陕西地质》2002年第2期75-80,共6页Geology of Shaanxi

摘　　要：蓝田玉石矿位于陕西省蓝田县境内 ,产于中元古界宽坪岩群之大理岩带中 ,在区域上属于秦岭褶皱系之北秦岭加里东褶皱带 ,横跨纸房—永丰褶皱束和太白—商县褶皱束。该矿床主要由蛇纹石化、绿帘石化的白云质石英大理岩组成 ,其成因为区域变质—接触交代变质共同作用而形成。蓝田玉颜色花纹丰富 ,主要玉石品种有墨玉、白玉。The Lantian jade deposit lies in Lantian County, which occurs in marble zones of the Middle Proterozoic Kuanping Group, regionally belonging to the Calidonian folded zones of the Qinling folded system and across over the Zhifang Yongfeng and Taibai Shangxian folds. It composed mainly of serpentinized and epidotization marble. It was formed by regional and contact metamorphism. The Lantian Jade is denominated serpentinized and epidotized dolomite quartz marble.

关 键 词：成因 蓝田玉 成因 蛇纹石化 绿帘石化 白云质石英大理岩 

分 类 号：P619.283[天文地球—矿床学]