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《Journal of Jiling University (Earth Science Edition)》 1989-02
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CALC-AMPHIBOLES OF METAMORPHIC ROCKS FROM DIFFERENT PARTS OF THE NORTH CHINA PLATFORM

Jin Shiqin  
130 samples of calc-amphibole from Precambrian metamorphic terrains in Shanxi, Hebei, Liaoning, Jinlin and shandong Provinces of the north part of North China Platform were studied in respect of their chemical composition and pleo-ghrpic property. It is recognized that the (Fe2++Fe8+)/(Fe2+ + Fe3+ +Mg) of the amphiboles was mainly related to the FeO/MgO ratio of the host rock, the Ti, AlTV, and (Na+K) contents are mainly to the metamorphic condition,and the pleochroism in Ng direction to Ti content of the mineral.Calc-amphiboles of different generations were frequently met in metamorphic rocks in these districts.Hence,they may be used as an important criteron to trace the metamorphic evolution.
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【References】
Chinese Journal Full-text Database 2 Hits
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【Co-references】
Chinese Journal Full-text Database 6 Hits
1 Jin Wei Li Shuxun Liu Xishan(Department of Geology);EARLY PRECAMBRIAN METAMORPHIC ROCKS AND EARLY EARTH CRUST EVOLUTION IN DAQINGSHAN, INNER MONGOLIA[J];;1992-03
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1 Xiao Long Wang Jincao(Guilin College of Geology, Guilin, 541004) (Guilin Institute of Mineral Recourses Geology);NUCLEATION, GROWTH AND ROTATION OF POR-PHYROBLASTS IN METAMORPHIC ROCKS[J];Geological Science and Technology Information;1993-03
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