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АМАЗОНИТСОДЕРЖАЩИЕ ПЕГМАТИТЫ ШАРТАШСКОГО МАССИВА (СРЕДНИЙ УРАЛ): МИНЕРАЛОГИЯ, ПЕТРОГЕНЕЗИС

机译:含有Sharutash Massif(中毒素)的含急性炎的PEGMATITES:矿物学,岩石

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摘要

Amazonite-bearing pegmatites of Shartashsky granite massif form small bodies with zonal structure. The amazonite crystals occur in the central coarse-blocked part of pegmatites, in miarolas, locating in druse cavities. According to the optical absorption and X-ray luminescence spectra study, the green-blue color of potash feldspar is caused by the Pb-ions admixture in its structure. The mineralogical study of pegmatites has shown, that they have rather weak rare-metal and rare-earth specialization provided by presence of the Nb-bearing manganoilmenite, Nb-rutile, allanite, monacite, xenotime, zircon, and a loverengite-senaite series mineral. Geological relationship and chemical compositions of Shartashsky granitoids and amazonite-bearing pegmatites assumes their genetic alliance. By its geodynamic setting, the massif belong to the continental margin tonalite-granodiorite formation of the Middle Urals. The high Pb concentrations in Shartashsky granites (35-50 ppm) are triple exceeding the Pb contents in similar massifs of the region. Most probably, just this concentration provided the forming of amazonite, subsequently to the differentiation of granite magma with the higher basicity.
机译:亚马逊岩石岩的佩格麦狄特式碎片纹理,块状物体与带状结构形成小体。亚马逊晶体发生在帕格马特的中央粗阻断部分,在米塞拉斯,定位在druse腔中。根据光学吸收和X射线发光光谱研究,钾盐长石的绿色蓝色是其结构中的Pb-离子混合物引起的。 PEGMATITES的矿物学研究表明,通过存在NB携带的锰铁镁,NB金红石,亚丙酸盐,单抗体,XENOTIME,锆石和Loverengite-Senaite系列矿物质,它们具有较弱的稀土金和稀土专业化。 。 Shartashsky Granitoids和Amazonite-authits Pegmatites的地质关系和化学组成假设其遗传联盟。通过其地球动力学设置,Massif属于中间乌拉尔的大陆边缘铜绿素 - Granodiorite形成。 Shartashsky花岗岩中的高PB浓度(35-50ppm)是该区域类似质量的Pb含量的三倍。最重要的是,只是这种浓度提供了亚马逊的形成,随后以更高的碱性分化花岗岩岩浆。

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