本文選題：華南 + 苗兒山-越城嶺�。� 參考：《大地構(gòu)造與成礦學(xué)》2017年06期

【摘要】：界牌W-Cu礦床產(chǎn)于苗兒山-越城嶺復(fù)式巖體東北部斑狀黑云母花崗巖與灰?guī)r接觸帶的矽卡巖中,是苗兒山-越城嶺復(fù)式巖體礦集區(qū)最大的矽卡巖型W-Cu礦床。礦區(qū)出露的主要巖體為斑狀黑云母花崗巖及后期淺色花崗巖體,礦區(qū)外圍則大面積出露斑狀黑云母二長花崗巖。礦化產(chǎn)于斑狀黑云母花崗巖與灰?guī)r接觸帶矽卡巖,及斑狀黑云母花崗巖中灰?guī)r捕虜體矽卡巖化帶中。黑云母花崗巖發(fā)育花崗巖型鎢礦床成礦早期常見的鈉長石化、云英巖化及從巖體至外接觸帶蝕變礦物組合顯示形成溫度逐漸降低。這些現(xiàn)象表明斑狀黑云母花崗巖與礦床具有緊密成因聯(lián)系。本文獲得礦區(qū)斑狀黑云母花崗巖、斑狀黑云母二長花崗巖和淺色花崗巖體鋯石LA-ICP-MS U-Pb年齡分別為:422±11 Ma,428±7 Ma,410±7 Ma,表明界牌W-礦床及區(qū)內(nèi)主要巖體均形成于加里東期。本文的同位素年齡及前人報(bào)道的苗兒山-越城嶺礦集區(qū)和華南加里東期與花崗巖有關(guān)礦床同位素年齡表明苗兒山-越城嶺礦集區(qū)W-Mo-Cu礦床成礦主要發(fā)生在加里東期和印支期,U礦成礦主要發(fā)生在燕山期,華南在加里東期發(fā)生了分布廣泛、成礦元素組合多樣的與花崗巖有關(guān)的成礦事件,有很好的找礦前景,今后應(yīng)加強(qiáng)華南加里東期礦床的找礦工作。
[Abstract]:The Jiepai W-Cu deposit occurs in skarn in the contact zone between porphyry biotite granite and limestone in the northeastern Miaoershan-Yuechengling complex, and is the largest skarn type W-Cu deposit in the Miaoershan-Yuchengling complex. The main intrusions are porphyry biotite granite and late light-colored granite, while the porphyry biotite monzogranite is exposed in large area around the mine area. Mineralization occurs in skarn in the contact zone between porphyry biotite granite and limestone and in skarn belt of limestone xenoliths in porphyry biotite granite. The formation temperature of the biotite granitic tungsten deposit in the early stage of mineralization, such as albite, quartz and altered mineral assemblage from the rock mass to the external contact zone, gradually decreased. These phenomena indicate that the porphyry biotite granite is closely related to the deposit. The zircon LA-ICP-MS U-Pb ages of porphyry biotite granites, porphyry biotite monoliths and light colored granites are obtained in this paper. The zircon LA-ICP-MS U-Pb ages of the porphyry biotite granites, porphyry biotite monoliths and light colored granites are respectively: 1. 422 鹵11 Ma428 鹵7 Ma-410 鹵7 Ma. indicating that the Jiepai W- deposit and the main rock bodies in the area were formed in Caled@@ The isotopic ages of the Miaoershan-Yuechengling ore concentration area and the Caledonian granite-related deposits in South China indicate that the W-Mo-Cu deposits in the Miao 'ershan-Yuechengling ore concentration area mainly occurred in the Caledonian period. In the Indosinian period, the ore-forming occurred mainly in the Yanshanian period. The metallogenic events related to granites occurred in the Caledonian period in South China with a wide distribution of metallogenic elements and various assemblages. The prospecting work of Caledonian deposits in South China should be strengthened in the future.
【作者單位】： 中國科學(xué)院廣州地球化學(xué)研究所礦物學(xué)與成礦學(xué)重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院大學(xué);廣西大學(xué)資源與冶金學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(41372084、41272099) 科技部國家重點(diǎn)研究計(jì)劃(2016YFC0600407)聯(lián)合資助
【分類號】：P597;P618.2

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