| 韦访,张启连,陈文伦,曹淑芳,谢振朝.广西镍矿资源潜力分析[J].地质找矿论丛,2024,39(1):87-96 |
| 广西镍矿资源潜力分析 |
| Analysis of Ni mineral resources potential in Guangxi Zhuang autonomous region |
| 投稿时间：2023-07-25 |
| DOI：10.6053/j.issn.1001-1412.2024.01.011 |
| 中文关键词: 镍矿 资源特征 矿床类型 成矿规律 潜力分析 广西地区 |
| 英文关键词:Ni ore characteristics of Ni mineral resources ore deposit type Metallogenic law potential analysis Guangxi Zhuang Autonomous Region |
| 基金项目:广西壮族自治区人力资源和社会保障厅"广西关键矿产资源深部勘查人才小高地"专项资金（桂组通字〔2019〕85号（2019—2023）），中国地质调查局《广西矿产地质志》续编与产品服务项目（编号：KD-[2023]-XZ-050）共同资助。 |
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| 中文摘要: |
| 本文基于野外实地调查和对广西镍矿资源产出特征、矿床类型、成矿规律、成矿演化特征的分析，划分了镍矿床类型，并开展找矿潜力研究。广西镍矿床（点）主要分布在河池市罗城县、柳州市融水县等地，已发现镍矿床（点）33处，其中岩浆熔离型镍矿床19处，风化型锰矿床伴生镍矿点12处，岩浆热液型锌铅锑多金属矿床共生镍矿1处，浅成中-低温热液型镍矿1处。镍矿规模以小型矿床为主，有规模的镍矿床以岩浆熔离型为主。岩浆熔离型镍矿床集中分布在桂北隆起之九万大山褶断带宝坛—元宝山一带，赋存地层以四堡群文通组为主，次为四堡群九小组、鱼西组；该类型矿床与四堡期基性-超基性岩密切；具有"三高一低的地球物理特征——高重力、高磁化率、高极化率、低电阻率。岩浆熔离型镍矿床、浅成中-低温热液型矿床镍矿床与古大陆裂解、板块缝合有关，都产出于深大断裂及次一级旁侧。所有镍（钴）铜矿床（点）分布于镍异常浓集中心或低背景区的高异常区，异常形态以串珠状为典型特征，异常组合以Ni-Co-Cu-As-Ag为表征。综合认为，罗城大坡岭、元宝山、融水大平具有较好的岩浆熔离型镍矿找矿潜力，金秀龙华、恭城三江、观音阁具有较好的浅成中-低温热液型矿床镍矿找矿潜力。 |
| 英文摘要: |
| Field investigation and ore deposit types, characteristics of metallogenic law, and evolution of Ni mineral resources in Guangxi Zhuang Autonomous Region have been made and Ni ore deposit types classified, the potential estimated. The Ni ore deposits and occurrences are mainly distributed in Luocheng county of Hechi city and Rongshui county of Liuzhou city. There are 33 Ni ore deposits and occurrences nowaday known in all of which 19 magmatic liquation type, 12 weathering residual Mn deposits (occurrences) with by-product Ni, 1 magmatic hydrothermal Pb-Zn polymetallic deposit or occurrence with by-product Ni, 1 Meso-epithermal Zn-Pb-Sb polymetallic deposit. Most of the Ni deposits are in small size. Magmatic liquation type Ni deposit is generally in certain size occurring mainly within rock of Wentong formation, 9 formation and Yuxi formation of Sibao Group in Baotan-Yuanbaoshan area of Jiuwandashan fold-fault zone in the North Guizhou rise. And such Ni deposit is closely related to basic-ultra basic rock of Sibao epoch and characterized by high gravity, high magnetic susceptability, high Polariz ability and low resistivity. The magmatic loquation type and meso-epithelial type are related to paleo-continent cracking and plate suture and occur near deep faults and their sub-faults. All the Ni (Co) Cu deposits (occurrences) are distributed at concentration center of Ni anomaly and high anomaly areas in the low background value area. Distribution of anomalies is like paternoster. Element combination of the anomaly is Ni-Co-Cu-As-Ag. Integration of the mentioned above shows that Dapoling and Yuanbaoshan areas in Luocheng county, Daping area in Rongshui county are potential for prospecting magmatic liquation type Ni deposit, Longhua area of Jinxiu county, Sanjiang and Guanyinge areas in Tiancheng county Meso-epithermal Ni deposit. |
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