Character of Glaucophane Schists in Metamorphic Zone in Yi Lian, Mu Dan Jiang, Hei Long Jiang
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    Abstract:

    The glaucophane schists in Hei Long Jiang group occur in lower part of metabasalt, Protolith types of glaucophane schists are,basalt, silicic rocl marl, In the glaucophane green schist facies, there are several rock types,various green schists, quartzites, stilpnomelane-plagioclase leptynites, stilp-nomelane rock, glaucophane-epidote-a.lbite Schists, ehidote-glaucophane-muscovite schis- ts, muscovite-glaucophane schists, stilpnomelane-bearinn calcitemuscovite- glau-cophane schists, stilpnomelane-bearing glaucophane quartzites and so on, The glaucophane in schists is the crossite,which is divivded into three generations, the first has radial and needle-like crystal, as inclusions occured in albite and calcite; the second is the crystals of long prism showing various orientations and has been surrouded by the schistosity;the third has nee- dle and hair crystals which identify with the schistositp, The material ment- Toned above indicates that the glaucophane growth is not only different in time, but diversity for their forming conditions in the physics and chemistry, which were changing then. The majority of the white mica is phengite, 2v values are much less than 35º,the average values of "bº" is equal to 9,045A,which represents more high-pressure metamorphic conditions. The minerals described above constitute a typical high-pressure series, These minerals have mainly been associated witih those in green schist faci- es, It represents aglaucophane green schist facies.

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白景文,王文兴,张海驲,1988,黑龙江依兰、牡丹江变质带蓝闪片岩特征[J].岩石矿物学杂志,7(4):298~308. Zone in Yi Lian, Mu Dan Jiang, Hei Long Jiang Bai Jingwen Wang Wenxing Zhang Hairi,1988,Character of Glaucophane Schists in Metamorphic Zone in Yi Lian, Mu Dan Jiang, Hei Long Jiang[J]. Acta Petrologica et Mineralogica,7(4):298~308.

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