| 虹螺山一带花岗岩类含钼性的矿物学标志 |
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| 引用本文： | 刘成龙.虹螺山一带花岗岩类含钼性的矿物学标志[J].矿物学报,1986(2). |
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| 作者姓名： | 刘成龙 |
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| 作者单位： | 辽宁省地质矿产局实验研究中心 沈阳 |
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| 摘 要： | 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。
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| 关 键 词： | 花岗岩 副矿物 标型矿物 矿床成因论 钼矿床 |
MINERALOGICAL MARKERS OF MOLYBDENUM-BEARING POTENTIAL OF GRANOTOIDS IN THE HONGLUOSHAN DISTRICT |
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| Liu Chenglong Research and Experiment Centre,Liaoning Bureau of Geology and Mineral Resources.MINERALOGICAL MARKERS OF MOLYBDENUM-BEARING POTENTIAL OF GRANOTOIDS IN THE HONGLUOSHAN DISTRICT[J].Acta Mineralogica Sinica,1986(2). |
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| Authors: | Liu Chenglong Research and Experiment Centre Liaoning Bureau of Geology and Mineral Resources |
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| Abstract: | The study of accessary minerals in acidic granitoids from the Hongluoshandistrict, has revealed some mineralogical markers of molybdenum-bearing pot-ential of certain rock bodies. The most typical mineral assemblage in molybdeum-bearing rock bodies inthis area is chalcopyrite-zircon-rutile-molybdenite or sulphide-molybdenite-zi-rcon-apatite. This kind of assemblage is characterized mainly by extremely lowmagnetite relative to hematite, extensive occurrence of lencoxene or rutile intitano-minerals, and increasing sulphides, such as molybdenite and chalcopyrite.Evidently, the accessary minerals in ore-bearing rock bodies are obviously ofmultiphase and multigeneration. Morphologically, such accessary minerals aszircon, pyrite, magnetite and so on generally take the form of broken grains.What should be particularly emphasized is that when zircon occurs as flat la-ths and distorted crystals there is a possibility to find molybdenum deposits inrock bodies. This may be considered as an indirect marker, and extensiveoccurrence of molybdenite and high molybdenum in other sulfides as direct ma-rkers of molybdenum mineralization. Regular changes in unit-cell parameters ofmagnetite and apatite in ore-bearing and ore-barren rock bodies are also a mi-neralogic marker of Mo-bearing potential of a rock body. |
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| Keywords: | granite accessary mineral typomorphicmineral minerogenesis Mo-deposit |
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