| 张聿隆,赵伟策,陈佳德,柳爱新,秦季军,许景轩,刘孜.大兴安岭南段浩布高铅锌矿锆石微量元素组成及意义[J].矿产勘查,2025,16(5):1088-1099 |
| 大兴安岭南段浩布高铅锌矿锆石微量元素组成及意义 |
| Trace element compositions in zircons from the Haobugao Zn-Pb deposit in the southern Greater Khingan Range and its implications |
| 投稿时间：2025-04-01 |
| DOI：10.20008/j.kckc.202505013 |
| 中文关键词: 大兴安岭南段 浩布高 矽卡岩型铅锌矿 锆石 微量元素 |
| 英文关键词: Greater Khingan Range Haobugao deposit skarn Pb-Zn deposit zircon trace element |
| 基金项目:本文受赤峰山金红岭地区高温多金属矿资源潜力评价(HLZB-QT-YY-2025001)、705m以上水平上盘地质探矿规律研究(QT-YY-T2022141)联合资助。 |
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| 中文摘要: |
| 内蒙古浩布高矽卡岩型铅锌多金属矿床位于大兴安岭南段，其形成与乌兰坝岩体具有密切的时空及成因联系，但岩浆性质及其所反映的氧化还原状态存在争议。本文基于详细的野外地质调查，针对浩布高矿床深部花岗岩开展了锆石 LA-ICP-MS微量元素分析。结果表明，成矿相关花岗岩中的锆石具有较高的 REE总含量(330.61×10-6~2550.37×10-6)，亏损 LREE、富集 HREE，显示强烈的 Eu负异常(0.02~0.36)和 Ce正异常(1.07~67.69)源于陆壳岩浆结晶过程，岩浆侵位温度介于 612.9~778.5 ℃，并具有较高的氧逸度，其 |
| 英文摘要: |
| The Haobugao Zn-Pb deposit in Inner Mongolia, China is located in the southern Greater Khingan Range, and displays spatially, temporally and genetically intimate relationship with the Wulanba pluton. However,the nature and redox conditions of magma remain controversial. This paper presents in situ LA–ICP–MS data of trace elements in zircon from the ore-related granitoids in the deeper part of the Haobugao deposit. The data showthat the Haobugao zircons have relatively high REE concentrations (330×10-6–2550×10-6), with depleted LREE and enriched HREE. They also display extremely negative Eu anomalies (0.02–0.36) and positive Ce anomalies (1.07– 67.69). These geochemical features indicate the magma was derived from a crustal origin, with crystallization tem.peratures of 612.9–778.5 ℃ and relatively high oxygen fugacity (ln(fO2) = -33.6 – -16.7). Combined with regional tectonic–magmatic–metallogenic evolution and previously published data, we suggest that there still exists a highpotential of exploration for polymetallic skarn and porphyry, but economic tin mineralization is of low potential. |
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