南岭东段九龙脑矿田成矿规律与找矿方向
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中国地质科学院矿产资源研究所

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国土资源部公益性行业科研专项计划“南岭东段九龙脑矿田成矿规律与深部找矿示范项目”(201411050)、中国地质调查局“中国矿产地质与区域成矿规律综合研究(中国矿产地质志)项目(1212011220369)”、“华南稀有稀土稀散矿产调查项目”联合资助、国家自然科学基金项目(41372092)


Patterns of Metallogenesis of Jiulongnao Orefield in the East Section of the Nanling Region and Direction for Prospecting
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Institute of Mineral Resources, Chinese Academy of Geological Sciences

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    摘要:

    九龙脑矿田位于南岭东段矿床分布最为集中、成矿强度最大的崇(义)-(大)余-(上)犹矿集区内,成矿条件优越,矿床类型丰富,同时发育矽卡岩型、热液脉型、云英岩型、破碎带蚀变岩型和风化壳型等多种类型矿床,形成了以九龙脑岩体为矿化中心,以钨锡为主,金银铜铅锌及铀、铌钽共生分带的矿化格局,在南岭乃至整个华南地区的成矿元素组合上极具代表性。通过对九龙脑矿田内岩浆活动与成矿作用的初步研究发现,不同类型矿床在成矿物质来源上与九龙脑岩体密切相关;在空间上东西成行,南北成列,构成网格状分布格局;成矿作用主要发生在燕山期,但同时印支期也伴随钨锡成矿作用。各矿床有可能归属于不同的成矿系列,或者属于同一个成矿系列的不同亚系列,或者同一个成矿(亚)系列的不同矿床式。并进一步提出①就矿找矿,对已知石英脉型矿床开展深部找矿;②根据分带性,对外带和内带矿床的找矿潜力进行评价;③根据共伴生规律,通过综合评价,明确找矿方向,拓展找矿领域;④根据区域成矿规律,通过区域对比,借鉴邻区矿田的成功经验,大胆实践;⑤打破常规思维,开拓新思路等五个找矿工作部署方向。

    Abstract:

    The Jiulongnao orefield is located in the ChongyiDayuShangyou ore concentration area in the east section of the Nanling Region. With advantageous minerogenetic condition, Jiulongnao orefield possesses different types of deposits. These deposits of skarntype, hydrothermal veintype, greisenstype, fracture zone alteration rocktype and weathering crusttype, form a mineralization framework with Jiulongnao granite as the center, WSn dominated, AuAgCuPbZnUNbTa zoned distribation. It is representative in Nanling Region and even in Southern China. Based on research of magmatism and mineralization of the Jiulongnao orefield, we suggest that different types of deposits are closely related to the Jiulongnao granite on oreforming material source. These deposits distribute in lines in the zonal and warpwise directions, and most of them formed during the Yanshanian Period, while individual one formed during the Indosinian Period. Deposits in the Jiulongnao orefield might belong to either different minerogenetic series or subseries, or different types of mineral resources. In addition, prospecting methodology has been put forward as to①prospecting and prediction at deep part of known deposits; ②evaluating the prospecting potential of deposits in inner and external zones; ③determining direction and expanding domain of exploration by comprehensive assessment based on concomitant regularity; ④putting successful prospecting experience of neighbouring orefield into practice on the basement of regional metallogenic regularity; ⑤developing new prospecting ideas.

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王登红,赵正,刘善宝,郭娜欣,梁婷,陈伟,周新鹏.2016.南岭东段九龙脑矿田成矿规律与找矿方向[J].地质学报,90(9):2399-2411.
WANG Denghong, ZHAO Zheng, LIU Shanbao, GUO Naxin, LIANG Ting, CHEN Wei, ZHOU Xinpeng.2016. Patterns of Metallogenesis of Jiulongnao Orefield in the East Section of the Nanling Region and Direction for Prospecting[J]. Acta Geologica Sinica,90(9):2399-2411.

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  • 收稿日期:2016-05-11
  • 最后修改日期:2016-05-11
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  • 在线发布日期: 2016-10-09
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