...
首页> 外文期刊>Записки Российского минералогического общества >АМАЗОНИТСОДЕРЖАЩИЕ ПЕГМАТИТЫ ШАРТАШСКОГО МАССИВА (СРЕДНИЙ УРАЛ): МИНЕРАЛОГИЯ, ПЕТРОГЕНЕЗИС
【24h】

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

机译:鲨鱼泥的含氨纶的聚乙二醇(中间尺寸):矿物学,成岩作用

获取原文
获取原文并翻译 | 示例

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:Shartashsky花岗岩地块的含亚马逊石伟晶岩形成具有带状结构的小物体。亚马逊石晶体出现在伟晶石的伟晶岩的中央粗块部分中,位于沉孔中。根据光吸收和X射线发光光谱研究,钾长石的绿蓝色是由其结构中的Pb离子混合物引起的。伟晶岩的矿物学研究表明,由于含铌锰锰矿,铌金红石,尿石,褐铁矿,褐铁矿,xenotime,锆石和勒芒石-塞纳石系列矿物的存在,它们具有相当弱的稀有金属和稀土元素专长。 。 Shartashsky花岗岩和含方铁伟晶岩的地质关系和化学组成假定它们的基因联盟。根据其地球动力学背景,该地块属于中乌拉尔大陆边缘的斜纹岩-角闪闪闪岩地层。 Shartashsky花岗岩中的高Pb浓度(35-50 ppm)是该地区类似地块中Pb含量的三倍。最有可能的是,仅此浓度就形成了Amazonite,随后是具有较高碱度的花岗岩岩浆的分化。

著录项

获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号