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新疆拜城县波孜果尔东矿区侵入岩为富含铌、钽、铀、钍、稀土、锆、铷、铯、锂等有用元素的含矿岩体.通过偏光显微镜、电子探针(EPMA)分析,对拜城波孜果尔东矿区侵入岩的矿物学特征进行了详细的研究,并对岩浆形成的构造背景进行了初步探讨,这对成岩、成矿作用研究有一定参考意义.研究结果表明,波孜果尔东矿区侵入岩为黑云母碱性花岗岩,主要造岩矿物包括石英、钠长石、钾长石、钠铁闪石、锂云母和黑云母等.其中,黑云母为锂铁叶云母,以富Si富Fe、低Al贫Mg为特征;锂云母以富Si、高Li低Al为特征,它们为黑云母-锂铁云母系列的不同成员,均属三八面体型.钠铁闪石以富含Fe2+为特征.副矿物包括烧绿石、星叶石、氟铈矿、独居石、钍石、萤石、锆石、铌铁矿等.岩石形成于非造山的板内构造环境,且具高温、无水、低氧逸度的成岩特点.
The intrusive rocks in the Poyangzi Erdong mining area, Baicheng County, Xinjiang are ore-bearing rock masses rich in useful elements such as niobium, tantalum, uranium, thorium, rare earth, zirconium, rubidium, cesium and lithium etc. The electron microscopic (EPMA) ), A detailed study on the mineralogical characteristics of intrusive rocks in the Baoding Guerdong Mining Area in Baicheng City is carried out, and the tectonic setting of the magma is discussed preliminarily, which is of some reference significance for the study of diagenesis and metallogenesis. The results show that the intrusive rocks in Biyangguerdong Mine Area are biotite alkaline granites, and the major rock-forming minerals include quartz, albite, potassium feldspar, sodium ironchip, lithic mica and biotite, among which biotite is Lithium iron leaf mica is characterized by Si-rich Fe and Al-poor Mg. Lithium mica is characterized by rich Si, high Li and low Al, and is a member of the trioctahedral structure of the biotite-lithium iron mica series The sodium iron tephrite is characterized by its abundance of Fe2 +, and the secondary minerals include pyrochlore, asterite, cerous ore, monazite, thorium, fluorite, zircon, niobite, etc. Rocks formed in non-orogenic Plate structure environment, and with high temperature, anhydrous, low oxygen fugacity diagenetic characteristics.