黄金科学技术 ›› 2021, Vol. 29 ›› Issue (1): 64-73.doi: 10.11872/j.issn.1005-2518.2021.01.074
摘要:
梨园金矿隶属太行山北段多金属成矿带,是山西省灵丘地区发现的一处中型金矿床,矿区内已发现的金矿体均赋存于NNE向断裂带中。本研究共采集677件岩石样品进行微量元素分析测试,利用迭代法计算各元素异常下限。通过相关性分析、R型聚类分析和斜交因子分析,研究各元素之间的相关关系,分析矿床成矿地质地球化学环境,厘定矿床成矿元素为Au,成矿直接指示元素组合为Cu-Pb-Zn-Ag,间接指示元素组合为As-Sb-Hg。Au元素异常主要分布在发育强烈褐铁矿化的花岗岩体、岩脉和地层中,展布方向为NE-SW向,与区域构造线方向相吻合,矿化受岩体及破碎带控制明显;指示元素异常组合分布范围与成矿元素叠合程度高,对金成矿指示作用明显。综上得到梨园金矿的构造地球化学特征,以用于本区的成矿预测,对于丰富和完善该区金矿地球化学模型有一定的指示意义。
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