| 郝兴中,王润生,王巧云,张华平,朱学强,刘伟,智云宝,王立功,张贵丽.鲁西北潘店物探异常中矽卡岩型铁矿勘查启示[J].矿产勘查,2022,13(4):453-459 |
| 鲁西北潘店物探异常中矽卡岩型铁矿勘查启示 |
| Exploration enlightenment of skarn type iron ore in geophysical anomaly of Pandian, northwest Shandong Province |
| 投稿时间：2021-03-09 |
| DOI：10.20008/j.kckc.202204009 |
| 中文关键词: 潘店 矽卡岩型 铁矿 磁异常 重力异常 |
| 英文关键词: Pandian skarn type iron ore magnetic anomaly gravity anomaly |
| 基金项目:本文受山东省自然科学基金项目(ZR2020MD033)、山东省矿产资源国情调查(鲁矿保[2020]1号)、中国地质调查局项目(DD2016005223、DD20190166)联合资助。 |
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| 中文摘要: |
| 近年来,在鲁西北齐河—禹城超深覆盖区内的李屯、大张物探异常区发现了矽卡岩型铁矿床,取得了重大找矿突破。潘店物探异常位于李屯、大张物探异常之间,由于该区重磁异常较前两者规模小、强度低,前人未对其进行铁矿勘查。在综合研究以往勘查资料的基础上,利用地质、物探、钻探等综合勘查技术手段对潘店异常进行了查证。在郭店村东侧地区钻探工程中标高-1417.94 m之下发现5层铁矿体,且矿体总厚度大(厚度约40.26 m),矿石品位高(平均品位TFe:51.82%、mFe:47.20%),提交了新发现郭店村矿产地1处。本次铁矿勘查工作遵循了“着重加强地质特征综合研究；注重物探信息反演分析；加强综合勘查手段信息提取；密切关注钻孔中岩芯信息”的原则,运用“地质—磁法—重力—电法—钻探—测井”等找矿方法取得了找矿突破。该区铁矿勘查成果表明李屯—潘店—大张地区铁矿在赋矿条件、矿床特征、成矿规律、找矿方法、勘查经验等众多方面表现为高度的相似性,对该区矽卡岩型铁矿进一步勘查工作具有重要的指导意义。 |
| 英文摘要: |
| In recent years, skarn type iron deposits have been discovered in the Litun and Dazhang geophysical anomaly areas in the Qihe-Yucheng ultra deep overburden area, northwest Shandong Province, and great breakthroughs have been made in prospecting. The Pandian geophysical anomaly is located between the Litun and Dazhang anomalies. The gravity and magnetic anomalies in this area are smaller in scale and lower in intensity than the former two. Based on the comprehensive study of the previous exploration data, the Pandian anomaly was explored by using comprehensive exploration techniques such as geology, geophysical exploration and drilling. Through the optimization of exploration section, the anomalies in the east of Guodian village were verified by drilling. Five layers of iron ore bodies were found below the elevation of -1417.94 m, with large total thickness (~40.26 m) and high ore grade (average grade of TFe is 51.82%, mFe is 47.20%), and a newly discovered orefield of Guodian village was submitted. The iron ore exploration work follows the principle of “focusing on strengthening the comprehensive study of geological characteristics, paying attention to the inversion analysis of geophysical information, strengthening the information extraction of comprehensive exploration means, and paying close attention to the core information in boreholes”. Based on the use of “geology-magnetic-gravity-electrical-drilling-logging” and other prospecting methods, a breakthrough has been made in prospecting. The results of iron ore exploration in this area show that the iron ore in Litun, Pandian and Dazhang area is highly similar in many aspects, such as ore hosting conditions, deposit characteristics, metallogenic regularity, prospecting methods and exploration experience, which have important guiding significance for the further exploration of skarn type iron ore in this area. |
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