| 张红强.河南百炉沟铅锌银矿地球化学特征及地质意义[J].矿产勘查,2021,12(10):2069-2075 |
| 河南百炉沟铅锌银矿地球化学特征及地质意义 |
| Geochemical characteristics and geological signi.cance of the Bailugou Pb-Zn-Ag deposit in Henan Province |
| 投稿时间：2021-01-26 |
| DOI： |
| 中文关键词: 稳定同位素 稀土元素 流体包裹体 成矿流体 物质来源 百炉沟铅锌银矿 |
| 英文关键词: stable isotope rare earth element .uid inclusion ore-forming .uid material source Bailugou Pb-Zn-Ag deposit |
| 基金项目:本文受中国地质调查局地质调查评价项目(0499141061)资助。 |
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| 中文摘要: |
| 百炉沟铅锌银矿位于卢氏—栾川多金属成矿带中段，成矿条件优越。为了解百炉沟铅锌银矿成矿物质的来源、成矿环境及矿床成因，进行了H、O、S、Pb同位素、流体包裹体岩相学和测温、稀土元素和微量元素分析，结果显示矿区硫同位素δ34S值-1.2‰~10.9‰，平均4.59‰，变化范围较宽，均一化程度较低，矿石μ (238U/204Pb)值9.28~9.43，Th/U比值4.11~4.26，黄铁矿Co/Ni比值0.511，上述特征均证明矿区成矿物质主要来源于地层。流体包裹体为液体包裹体，均一温度较高，盐度较低；氢、氧同位素研究显示矿床成矿热液主要来源于岩浆水。稀土元素特征表明围岩与矿石的稀土成分基本一致，成矿物质可能来自于地层。矿床应该为同生沉积型矿床。 |
| 英文摘要: |
| Bailugou Pb-Zn-Ag deposit lies in the middle of Lushi-Luanchuan polymetallic metallogenic belt, and possesses advantageous metallogenic conditions. In order to study the source of ore-forming materials, metallogenic environment and genesis of the Bailugou Pb-Zn-Ag deposit, this paper studied H, O, S, Pb isotope, fluid inclusions, rare earth elements and trace elements. The results show that the sulfur isotope δ34S value of the mining area is -1.2‰ ~ 10.9‰, with an average of 4.59‰. The variation range of the δ34S is wide and the homogenization degree is low. The μ(238U/204Pb) value of ore is 9.28 ~ 9.43, the ratio of Th/U is 4.11~4.26, and the ratio of Co/Ni in pyrite is 0.511. The characteristics show that the ore-forming materials in the mining area are mainly derived from the strata. Fluid inclusions are liquid inclusions, and which have the higher homogenization temperature and with low salinity. The study of hydrogen and oxygen isotope shows that the ore-forming hydrothermal .uid mainly comes from magmatic water. The characteristics of rare earth element is same between surrounding rock and ore. The ore-forming material may come from the strata. The genesis of the deposit is close to the syngenetic sedimentary deposit. |
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