| 中国钴地球化学异常特征、成因及找矿远景区预测 |
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| 引用本文： | 刘东盛,王学求,聂兰仕,周建,刘汉粮,张必敏,王玮,迟清华,徐善法.中国钴地球化学异常特征、成因及找矿远景区预测[J].地球科学,2022,47(8):2781-2794. |
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| 作者姓名： | 刘东盛 王学求 聂兰仕 周建 刘汉粮 张必敏 王玮 迟清华 徐善法 |
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| 作者单位： | 1.自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所, 河北廊坊 065000 |
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| 基金项目： | 深部探测专项SinoProbe?04地质大调查项目DD20190450地质大调查项目DD20190451 |
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| 摘 要： | 近年来钴资源的战略地位急剧提升，钴资源勘查也日益受到重视. 但钴的成矿作用特殊，极低密度地球化学填图能否为钴资源勘查提供可靠依据有待研究.对全国基准计划获得的深层汇水域沉积物钴地化异常开展研究，建立矿床与异常空间位置指数，定量评价矿床与异常相对位置关系. 发现钴异常的形成主要受（超）基性岩控制，少数与矿化作用有关，个别钴异常与泥质岩和次生富集等因素有关. 中国与欧洲（FOREGS计划）结果均表明，风化型、热液型、岩浆型钴矿床与钴异常空间对应关系依次减弱. 在此基础上，结合中国钴成矿地质背景，在华南钴成矿带、华北克拉通北缘东段等圈定了若干钴成矿远景区.
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| 关 键 词： | 钴异常 (超)基性岩 钴矿床 异常成因 地球化学 |
| 收稿时间： | 2021-07-07 |
Cobalt Geochemical Anomalies Characteristics and Genesis in China and Metallogenic Prospecting Areas Prediction |
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| Abstract: | In recent years, the strategic position of cobalt resources has risen sharply, and cobalt resource exploration has also received increasing attention. However, the mineralization of cobalt is special, and whether extremely low?density geochemical mapping can provide a reliable basis for cobalt resource exploration remains to be studied.This paper conducts research on the geochemical anomalies of cobalt in deep catchment sediments obtained by the China Geochemical Baselines project, and finds that cobalt anomalies are mainly controlled by ultrabasic/basic rocks, and a few are related to mineralization. Lesser cobalt anomalies are related to argillaceous rock sand secondary enrichment. Establishing a spatial correlative index between deposits and anomalies, and quantitatively evaluating the relative spatial relationship between deposits and anomalies.Both China and Europe (FOREGS project) show that the spatial correspondence relationship of anomalies with weathered, hydrothermal, and magmatic type of cobalt deposits gradually weakened. Based on the above understanding, combined with the metallogenic background of China's cobalt, several cobalt metallogenic prospecting areas have been delineated in the South China and the eastern section of the northern margin of the North China Craton cobalt metallogenic belt. |
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