A comparison study of tungsten-bearing granite and related mineralization in the northern Jiangxi-southern Anhui provinces and southern Jiangxi Province in South China
A comparison study of tungsten-bearing granite and related mineralization in the northern Jiangxi-southern Anhui provinces and southern Jiangxi Province in South China
复制标题
华南赣北皖南地区和赣南地区含钨花岗岩及相关矿化对比研究
DOI：
10.1007/s11430-016-9071-6
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发表时间：
2017-07
期刊：
影响因子：
--
通讯作者：
蒋少涌
中科院分区：
文献类型：
--
作者：
苏慧敏;蒋少涌
赣南和北方赣皖南地区是华南两个重要的钨成矿区。苏锡常钨矿区是华南著名的钨矿产区，分布着“崇义-大余-上犹”、“于都”、“龙南-全安-定南”等多个矿集区，有著名的西华山、漂塘、盘古山、大吉山等大型、超大型钨矿床。近年来，南靖县钨多金属找矿取得重大突破。发现了大湖塘、竹溪、东源、百丈岩等大型、超大型钨铜（钼）矿床。这些矿床均与中生代燕山期花岗质岩浆活动有关。本文通过对华南两个钨矿区含钨花岗岩的时空分布、岩石学、年代学和地球化学特征的系统比较，旨在加深对华南两个钨矿区含钨花岗岩成因和伴生金属富集机制的认识。（1）两地区含钨花岗岩及成矿作用的时代不同，南太平地区主要集中在165-150 Ma，而南太平地区有150-140 Ma（晚侏罗世-早白垩世）和135-120 Ma（早白垩世）两个时代。(2)NJSAP和SJP地区的含钨花岗岩都是高度分离的花岗岩，但SJP花岗岩比NJSAP花岗岩经历了更高程度的分离结晶和更广泛的流体交代作用。(3)两地区含钨花岗岩的成因不同，南靖南地区的含钨花岗岩是新元古代双桥山群变质火山岩夹在不太成熟的砂泥岩中部分熔融形成的，富W、Cu;而南太平地区的含钨花岗岩可能是中元古代高成熟的富粘土泥岩中的，仅富W。因此，两区花岗岩不同的成矿源岩、不同的金属富集特征以及不同的岩浆演化和分异程度可能是控制华南两区钨矿成矿特征差异的关键因素。
The southern Jiangxi Province (SJP) and northern Jiangxi-southern Anhui provinces (NJSAP) are the two most important tungsten metallogenic districts in South China. The SJP district is a well-known tungsten producer in South China where distributes several ore concentrated areas such as the “Chongyi-Dayu-Shangyou”, “Yudu” and “Longnan-Quanan-Dingnan” areas, with many large and super large tungsten deposits including the famous Xihuashan, Piaotang, Pangushan and Dajishan deposits. In recent years, major prospecting breakthrough for W-polymetallic resources has been made in the NJSAP district. Several large and super large W-Cu (Mo) deposits, such as the Dahutang, Zhuxi, Dongyuan and Baizhangyan deposits, are discovered. These deposits are all genetically associated with the Yanshanian (Mesozoic) granitic magmatism. In this study, a systematic comparison of the temporal and spatial distribution, petrology, geochronology, and geochemical characteristics of the tungsten-bearing granites between the SJP and NJSAP districts has been made, with an aim to improving the understanding of the petrogenesis of the granites and associated metal enrichment mechanisms in the two tungsten ore districts in South China. The following conclusions can be drawn: (1) The ages of the tungsten-bearing granites and associated mineralization are different in the two districts, in the SJP district the ages are mainly concentrated in 165–150 Ma, whereas in the NJSAP district it displays two age periods, one is 150–140 Ma (Late Jurassic-Early Cretaceous), and the other is 135–120 Ma (Early Cretaceous). (2) The tungsten-bearing granites from both the NJSAP and SJP districts are highly fractionated granitic rocks, but the SJP granites have experienced higher degree of fractional crystallization and more extensive fluid metasomatism than the NJSAP granites. (3) The petrogeneses of the tungsten-bearing granites from the two districts are different, those from the NJSAP district originated from partial melting of less mature sandstone-mudstone intercalated with meta-volcanic rocks of the Neoproterozoic Shuangqiaoshan Group which are both W and Cu enriched, in contrast those from the SJP district were likely derived from the highly mature, clay-rich mudstones of the Mesoproterozoic age which are only W enriched. In summary, the different source rocks with different metal enrichment features and different magmatic evolution and fractional degrees for the granites in the two districts might be the key factors that controlled the different matallogenic characteristics of tungsten ore deposits in the two districts in South China.
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影响因子：
5
作者：
D. Shaw
通讯作者：
D. Shaw
影响因子：
--
作者：
Xu Jian-xiang
通讯作者：
Xu Jian-xiang
DOI：
--
发表时间：
2015
期刊：
--
影响因子：
--
作者：
Z. Ji
通讯作者：
Z. Ji
DOI：
--
发表时间：
1980-08
期刊：
--
影响因子：
--
作者：
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通讯作者：
C. Burnham;Ohmoto Hiroshi
影响因子：
3.3
作者：
Yan‐jing Chen;Huayong Chen;K. Zaw;F. Pirajno;Zengjie Zhang
通讯作者：
Yan‐jing Chen;Huayong Chen;K. Zaw;F. Pirajno;Zengjie Zhang