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The feldspars of topaz-lepidolite granite in Yashan late stage are P-rich albite and Kfeldspar, and the phosphorus goes into feldspar structure in the form of PAlSi〓 substitution. The phosphorus contents of feldspars vary according to their crystal habitus. In general, the feldspars of later generation have the higher average phosphorus content than that of earlier generation, and the albite contains higher phosphorus than the K-feldspar in the same generation. The zircon is highly rich in Hf, U, P and Al. The phosphorus enters the zircon structure mainly by the form of〓P〓〓Si〓, Al〓P〓Si〓 or P〓Al〓Si〓, Zr〓 substitution. The P-rich zircon is the production of the highly evolved magma, and it might be one of the important characteristic minerals of the high-P subtype granite. The manganocolumbite, manganotantalite, wodginite and titanowodginite are the main niobium and tantalum minerals.
雅山晚阶段黄玉锂云母花岗岩的长石矿物是富磷长石,磷以PAlSi〓替换方式进入长石结构中,并且在长石中的分布很不均一,一般是晚结晶的长石比早结晶的长石的磷含量高,同期结晶的钠长石比钾长石的磷含量高;锆石矿物为高度富铪、铀、磷和铝的锆石,磷主要以(Y, HREE, Fe)〓P〓〓〓Si〓〓、Al〓P〓Si〓〓、P〓Al〓Si〓〓Zr〓〓等替换方式进入锆石晶格中,富磷锆石是岩浆高度演化的结果,是高磷花岗岩的特征矿物之一;雅山含有丰富的磷锂铝石,是高磷花岗岩的主要磷酸盐矿物;铌—钽矿物主要有铌锰矿—钽锰矿、锡锰钽矿—钛锰钽矿、细晶石等。
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The primary beryl crystals were crystallized early from the pegmatitic magma in association with rock forming minerals such as quartz, muscovite, albite and spodumene.
原生绿柱石形成于早期岩浆阶段,与造岩矿物石英、白云母、钠长石、锂辉石共生。
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The experimental products include crystal phase quartz, feldspar (alkila-feldspar, albite, K-feldspar), zinnwaldite and topaz, a melt phase and a trace vapour. The solid products were been studied by optics method, electron microprobe and X-ray analysis. The results show that liquidus temperature raises slightly and solidus temperature falls down obviously and that the upper temperature limit raises for the stability field of quartz and topaz, and falls down for the stability field of alkila-feldspar as F contents in crease.
实验淬火产物包括结晶相石英,长石(碱性长石,钠长石、钾长石),铁锂云母和黄玉及玻璃相和微量流体,对固相淬火产物进行了系统和详细的显微观察及电子探针和x射线分析,研究了F对钠长花岗岩液、固相线温度、相关系和相组合的影响和含F钠长花岗岩的结晶序列和熔体演化、F在流体和熔体之间的分配及F对花岗质熔体结构的影响,对含黄玉矿物组合进行了一系列热力学矿物平衡计算,获得如下重要结论
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The feldspars from the γA1 and γAIIa show many clear metasomatic alteration features; the- refore, the authors genetically consider the albitized protolithionite granite and the albitized zinnwaldite granite to be metasomatic altered granites.
花岗岩中长石具有清楚的交代特征,晚期岩体中的钾长石的An和Ab组份十分低,斜长石中的An和OI组份也很低,说明钠长石化黑鳞云母花岗岩和钠长石化铁锂云母花岗岩为交代蚀变花岗岩。
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Spodumene (LiALSi2O6) occurs almost exclusively in lithium rich granite pegmatites.
锂辉石几乎只出现在富含锂的花岗岩地带,属于一种相对紧缺矿种,通常与水晶、微斜长石、钠长石、白云母、锂云母、电气石、绿宝石,较少与黄玉、锂磷铝石、磷灰石、锡石共生,但也有报道锂辉石出产于半花岗岩和片麻岩。
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excessively:过分地, 非常地
double pipe cooler crystallizer 套管冷却式结晶器 | excessively 过分地, 非常地 | hallerite 锂钠云母
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unstable dollar:不稳定美元
hallerite 锂钠云母 | unstable dollar 不稳定美元 | stalagmometer (表面张力) 滴重计
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helvite:日光榴石
主要矿石矿物有绿柱石、日光榴石(Helvite)、锂云母及铁锂云母. 矿床规模一般为中小型. 在花岗岩浆结晶作用的晚期,首先发生钠长石化,其次为含F, H2O, S, CO2的气化热液对花岗岩进行强烈的交代形成各种相的云英岩以及铍矿物的富集.