THE ORIGIN OF THE ZHANGJIALONG TUNGSTEN DEPOSIT, SOUTH CHINA: IMPLICATIONS FOR W-Sn MINERALIZATION IN LARGE GRANITE BATHOLITHS
THE ORIGIN OF THE ZHANGJIALONG TUNGSTEN DEPOSIT, SOUTH CHINA: IMPLICATIONS FOR W-Sn MINERALIZATION IN LARGE GRANITE BATHOLITHS
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DOI：
10.5382/econgeo.2018.4587
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发表时间：
2018-08
期刊：
影响因子：
5.8
通讯作者：
Shunda Yuan;A. Williams-Jones;J. Mao;Pan Zhao;Chen Yan;Dongliang Zhang
中科院分区：
文献类型：
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作者：
Shunda Yuan;A. Williams-Jones;J. Mao;Pan Zhao;Chen Yan;Dongliang Zhang
.南岭地区是世界上最大的钨锡成矿区，拥有10个大型钨锡矿床，它们在空间上和成因上都与中生代11个高度演化的花岗岩体有关。然而，在体积上，加里东花岗岩（古生代），主要是岩基，在重要性上接近其12个中生代等价物，并且一直是最近勘探的目标。这导致了在这些花岗岩基中或其附近发现了许多经济钨矿床，包括位于加里东期彭公庙花岗岩基南缘的巨型张家龙存款。尚未解决的问题是，这是否是一个重要的加里东期的16钨锡矿化的证据。在这篇文章中，我们报告了高精度西姆斯锆石U-Pb、17个白云母Ar-Ar和辉钼矿Re-Os年龄测定的结果，这些结果限制了与张家龙存款相关的18个花岗岩岩浆作用、云英岩化和钨矿化之间的时间关系。钨矿化的19个辉橄榄岩Re-Os年龄为160.2± 2.2Ma，与云英岩的白云母Ar-Ar年龄（153.5± 1.0Ma）相近，但略老20年。然而，这些年龄比21岁年轻得多。
. The Nanling region is the largest W-Sn metallogenic district in the World and hosts a number 10 of giant W-Sn deposits, all of which are spatially and genetically associated with highly evolved Mesozoic 11 granitic stocks. Volumetrically, however, Caledonian granites (Paleozoic), mainly batholiths, approach their 12 Mesozoic equivalents in importance and have been the target of recent exploration. This has resulted in the 13 discovery of a number of economic tungsten deposits in or near these granite batholiths, including the giant 14 Zhangjialong deposit, which is located on the southern margin of the Caledonian Penggongmiao granite 15 batholith. The unresolved question is whether or not this is evidence for an important Caledonian epoch of 16 W-Sn mineralization. In this contribution, we report the results of high precision SIMS zircon U-Pb, 17 muscovite Ar-Ar, and molybdenite Re-Os age determinations that constrain the timing relationships among 18 granitic magmatism, greisenization and tungsten mineralization related to the Zhangjialong deposit. The 19 molybdenite Re-Os age of the tungsten mineralization is 160.2±2.2 Ma, which is similar to, albeit slightly 20 older than, the muscovite Ar-Ar age of the greisen (153.5±1.0 Ma). These ages, however, are considerably 21 younger than the