陕西略阳中坝子钛磁铁矿床地质特征及找矿方向研究
Geological Characteristics and Prospecting Direction Study of Zhong Bazi Ti Magnetite Deposit in Lueyang County,Shaanxi Province
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摘要: 陕西略阳中坝子钛磁铁矿是"勉-略-宁"三角地带鲜见的岩浆晚期分异型矿床,其主要控矿因素为碧口火山岩群内沿深源断裂侵入的中—晚元古代辉长-闪长岩杂岩体。钛磁铁矿体多产于规模大、分异好的辉长-闪长岩杂岩体中部的暗色岩相(碱性铁镁质基性岩)内,产状与含矿岩体基本一致,具有较好的钛铁资源潜力。笔者较系统归纳整理了该矿床的地质特征, 分析总结了控矿地质因素,指示了该区域下一步勘查找矿方向,以期服务于三角地带相关铁矿床的勘查和研究。Abstract: Zhongbazi Ti magnetite deposit is late magmatic differentiation mineral deposit, which is infrequent in Mian-Lue-Ning triangle area in Lueyang county, Shaanxi province. Its main ore-controlling factor is mid-late Proterozoic gabbro-diorite complex which intruded into the Bikou volcanic rocks group along the deep faults. Ti magnetite deposit is prolific in the dark rock lithofacies (the alkaline mafic) which is in the middle of the large scale and well differnetiated gabbro diorite complex, its occurrence is basically consistent with ore-bearing rock mass and there is better ilmenite resource potential. The authors systematically collate the geological characteristics of the deposit, analysing and summarizing the ore-controlling geological characteristics factors and indicate the next prospecting direction in this region, so as to service in the correlative exploration and research of iron deposit in the triangle areas.
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