| 王占彬.河北省怀安县朱家洼矿区地球化学特征与找矿方向[J].地质与勘探,2020,56(1):102-112 |
| 河北省怀安县朱家洼矿区地球化学特征与找矿方向 |
| Geochemical characteristics and prospecting direction of the Zhujiawa ore district in Huai'an county, Hebei Province |
| 投稿时间：2018-12-30 修订日期：2019-06-22 |
| DOI：10.12134/j.dzykt.2020.01.010 |
| 中文关键词: 朱家洼 地球化学 金矿 钼矿 怀安 |
| 英文关键词: Zhujiawa, geochemistry, gold ore, molybdenum ore, Huai'an |
| 基金项目:中国地质调查局（西北沿边及特殊地区地质矿产调查，编号：DD20160079）和（河北1:5万西洋河、套里庄、鹿尾沟、怀安县、水闸屯幅区域地质矿产调查，编号：12120114008801）项目联合资助 |
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| 中文摘要: |
| 朱家洼矿区位于华北板块北缘中段太古宙、元古宙、中生代金银铅锌铁硫铁矿成矿带，为火山热液型金多金属矿。为查明该区成矿规律，明确找矿方向，在区内开展了水系沉积物测量、土壤地球化学测量等工作。通过对元素分布、元素相关性、元素异常等特征研究表明，Au、Mo为本区主成矿元素；各元素异常平面分布具有分带性，高温元素W、Sn、Bi异常位于骆驼山火山机构中心，中低温元素Pb、Zn、As、Ag等异常分布于火山机构边部及周边围岩中，成矿元素Au、Mo异常主要位于火山机构西侧围岩中。异常查证发现金钼矿化体2条，金钼矿化受火山机构和北西向构造带控制。依据成矿地质条件、地球化学异常及查证成果认为，朱家洼矿区Au、Mo成矿潜力大，火山机构西侧围岩区是该区重点找矿地段。 |
| 英文摘要: |
| The Zhujiawa ore district is a volcanic hydrothermal gold polymetallic deposit located in the gold-silver-lead-zinc-iron-pyrite ore belt of Archean, Proterozoic, and Mesozoic, tectonically in the middle section of the northern margin of the North China plate. In order to clarify the ore-forming rules and determine the direction of prospecting, stream sediment and soil geochemical surveys are carried out in this area. The study of element distribution, element correlation and element anomaly characteristics reveals that Au and Mo are the main ore-forming elements of this area. The plane distribution of the element anomalies is zonal. The anomalies of high temperature elements W, Sn and Bi are distributed in the Luotuo Mountain volcanic edifice center. The anomalies of low or medium temperature elements Pb, Zn, As, and Ag are distributed in the edge of volcanic edifice and surrounding rocks. The ore-forming elements Au and Mo are mainly located in surrounding rocks in the west of the volcanic edifice. Anomaly inspection reveals two gold-molybdenum mineralized bodies, and the gold-molybdenum mineralization is controlled by volcanic edifice and NW-trending tectonic belts. According to the ore-forming geological conditions, geochemical anomalies and verification results, the mineralization potential of Au and Mo in the Zhujiawa ore district is great, and the surrounding rock area on the west of the volcanic edifice is the key prospecting zone in this region. |
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