摘要
钴是战略性稀缺金属,在新兴产业中被广泛应用。钴因化学性质特殊,多以共伴生矿床产出,独立矿床少见。目前云南省钴矿呈点多、面广、量少特征,资源保有程度严重不足。本文在对典型矿床进行重点解析的基础上,对云南钴矿床(点)地质特征和成矿规律进行了系统总结。云南省以钴为主矿种的矿床(点)主要有中低温热液型、沉积变质型和风化型3类,其中,以中低温热液型和沉积变质型钴矿居多。中低温热液型矿床主要形成于古近纪,产在澜沧江断裂带东侧的兰坪—普洱成矿带;沉积变质型矿床主要形成于中元古代,产在扬子陆块西缘昆阳裂谷的滇中成矿带。在大量野外调查和室内综合研究的基础上,提出了维西—永平地区、宁洱白龙厂—大箐地区、景谷芒乃—景洪地区、易门—元江地区和会泽—富源地区5个找矿远景区。其中,维西—永平地区、易门—元江地区找矿前景较好,有找到中型钴矿床的潜力,建议作为钴矿找矿优先部署的重点地区。
Cobalt is a scarce strategic metal and is widely used in emerging industries.Due to the unique chemical properties of cobalt,there are mostly cobalt co-associated deposits,with little independent cobalt deposits.At present,cobalt deposits in Yunnan Province are characterized by numerous mineral occurrences in wide areas with limited cobalt resource quantities,resulting in a serious shortage of retained cobalt resource.Based on analyzing typical ore deposits in this paper,we have systematically summarized geological characteristics and mineralization regularities of cobalt deposits(occurrents)in Yunnan Province.There are three main types of cobalt deposits(occurrences)in Yunnan Province.They include medium to low temperature hydrothermal type,sedimentary metamorphic type,and weathering type.Among them,the medium to low temperature hydrothermal type and sedimentary metamorphic type cobalt deposits are dominant.The medium to low temperature hydrothermal deposits were mainly formed in the Paleogene and distributed in the Lanping-Pu'er metallogenic belt on the east side of the Lancangjiang fault zone;The sedimentary metamorphic deposits were mainly formed in the Middle Proterozoic and distributed in the central Yunnan metallogenic belt of the Kunyang Rift on the western margin of the Yangtze Block.On the basis of extensive field investigations and indoor comprehensive researches,five mineral exploration targeting areas,including the Weixi-Yongping area,Bailongchang-Daqing area,Mangnai-Jinghong area,Yimen-Yuanjiang area,and Huize-Fuyuan area,have been outlined.Especially,exploration prospects of the Weixi-Yongping area and Yimen-Yuanjiang area have good potential for finding medium-sized cobalt deposits.They are recommended to be key areas of priority deployment for exploring cobalt resource in Yunnan Province.
作者
崔银亮
徐恒
杨昌华
张苗红
姜永果
CUI Yiniang;XU Heng;YANG Changhua;ZHANG Miaohong;JIANG Yongguo(Yunnan Nonferrous Metals Geological Bureau,Kunming Yunnan 650051,China;No.308 Geological Party,Yunnan Nonferrous Metals Geological Bureau,Kunming Yunnan 650200,China;Institute of Geological,Geophysical and Geochemical Exploration,Yunnan Nonferrous Metals Geological Bureau,Kunming Yunnan 650216,China)
出处
《矿物学报》
CAS
CSCD
北大核心
2024年第3期366-382,共17页
Acta Mineralogica Sinica
基金
云南省技术创新人才培养对象项目(编号:202105AD160003)。
关键词
钴矿床
成矿规律
矿床类型
找矿方向
云南
cobalt deposit
metallogenic regularity
deposit type
prospecting direction
Yunnan
