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通过对虹螺山一带酸性花岗岩类副矿物的研究,获得了一些岩体含钼性的矿物学标志。 区内含钼岩体最典型的副矿物组合是黄铜矿-锆石-金红石(白钛石)-辉钼矿型或硫化矿物-辉钼矿-锆石-磷灰石型。这种组合类型以含磁铁矿极微,且赤铁矿量大于磁铁矿,钛矿物中出现大凰白钛石或金红石,辉钼矿、黄铜矿等硫化矿物增多为其特征。含矿岩体副矿物明显具有多期性和多世代性。在形态上普遍成破碎颗粒状,特别是当锆石出现扁板晶、歪晶等形态时,对区内寻找钼矿具有标志意义。副矿物中钼浓度显著增高是岩体含钼性的微量元素标志,早期晶出的锆石等副矿物食钼较高,标示岩体有钼成矿的可能性,而辉钼矿的大量出现或其他金属硫化物含钼较高则可视为钼成矿的直接标志。含矿岩体和非含矿岩体中磁铁矿、磷灰石晶胞参数有规律性地变化,也是岩体含钼性的一种矿物学标志。
Through the study of acidic granitoids in Hongluo Mountain, some mineralogical signs of molybdenum content in rock mass were obtained. The most typical accessory mineral assemblages of molybdenitic rock mass in the area are chalcopyrite-zircon-rutile (dolomite) -molybdenum ore type or sulphide mineral-molybdenite-zircon-apatite type. This type of assemblage is characterized by the presence of extremely small amounts of magnetite and an increased amount of hematite compared to magnetite. Titanic minerals such as dolomite or rutile, molybdenite, chalcopyrite and other sulphide minerals are present in the assemblage. Ore-bearing rock accessory minerals are obviously multi-stage and multi-generational. The morphology is generally broken into granular, especially when the zircon appears flat plate crystal, crooked crystal and other forms, the region is looking for molybdenum sign. The concentration of molybdenum in the accessory minerals is significantly increased, which is the trace element sign of the molybdenum content of the rock mass. The early mineral inclusions such as zircons and other accessory minerals are high in molybdenum content, which indicates the possibility of molybdenum mineralization in the rock mass. Or other metal sulfides containing molybdenum higher molybdenum can be regarded as a direct indicator of mineralization. The parameters of magnetite and apatite unit cell in ore-bearing rock mass and non-ore-bearing rock mass regularly change, which is also a mineralogical mark of molybdenum content in rock mass.