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 Lu-ocheng county of Hechi city and Rongshui county of Liuzhou city.There are 33 Ni ore deposits and occur-rences 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 Ji-uwandashan 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 a-bility and low resistivity.The magmatic loquation type and meso-epithelial type are related to paleo-conti-nent 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-epi-thermal Ni deposit.
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
Key words
Ni ore/characteristics of Ni mineral resources/ore deposit type/Metallogenic law/poten-tial analysis/Guangxi Zhuang Autonomous Region
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