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栾川钼多金属矿集区位于秦岭造山带的东段,该区分布着一系列与钼多金属矿化有关的燕山期花岗岩小岩体。前人对该区岩浆岩的年代学、岩石地球化学特征等方面进行了广泛的探讨,但对其矿物学方面的研究相对较少。黑云母是花岗岩中最常见的铁镁质暗色造岩矿物,其化学成分特征能够提供有关岩浆的物理化学条件、分异演化特征、原始岩浆熔体及与岩浆共存流体的性质,对判别岩浆源区性质、岩石成因、及花岗岩的成矿作用等都具有重要的指示意义。矿集区内南泥湖岩体、上房沟岩体、鱼库岩体以及黄背岭
The Luanchuan Molybdenum polymetallic ore district is located in the eastern segment of the Qinling orogenic belt. There are a series of small Yanshanian granite bodies associated with molybdenum polymetallic mineralization. The predecessors have conducted extensive discussions on geochronology and petrochemistry of magmatic rocks in this area, but there are relatively few studies on their mineralogy. Biotite is the most common mafic-dark rock-forming mineral in granite. Its chemical composition can provide physicochemical conditions, differential evolution characteristics, original magma melt and co-existing fluid with magma, The nature of the area, the genesis of the rock and the mineralization of the granite all play an important guiding role. In the ore-collecting area, there are Nannihu massif, Shangfanggou massif, fishpond massif and Huangbeiling