| 王玉往,解洪晶,廖震,张会琼,王京彬,王莉娟.岩浆热液矿床的成矿地质体[J].矿产勘查,2021,12(4):791-801 |
| 岩浆热液矿床的成矿地质体 |
| Metallogenic geological bodies of magmatic hydrothermal deposits |
| 投稿时间：2020-01-20 |
| DOI： |
| 中文关键词: 岩浆热液矿床 成矿地质体 岩石组合 岩石地球化学 岩浆演化中图分类号: P61 文献标识码: A 文章编号: 1674-7801(2021)04-0791-11 |
| 英文关键词: magmatic hydrothermal deposit metallogenic geological body rock association lithogeochemistry magmatic evolution |
| 基金项目: |
|
| 摘要点击次数: 1524 |
| 全文下载次数: 622 |
| 中文摘要: |
| 岩浆热液型矿床主要与中性-酸性岩浆岩类密切相关，成矿地质体较为明确，因此成矿地质体特征是该类矿床重要的找矿预测标志。我国岩浆热液型矿床可划分为壳-幔混源和壳源两大系列和 6个亚系列，其中壳-幔混源岩浆热液矿床又分为 Cu-Mo-Au系列、 Pb-Zn-Ag多金属系列、 Fe系列，壳源岩浆热液矿床分为 W多金属系列、 Sn多金属系列、稀有元素系列。从 Fe →Cu-Mo-Au →Pb-Zn-Ag →Sn多金属→ W多金属→稀有元素系列，成矿地质体特征具有一系列规律性演变:含矿岩石类型从中基性向中酸性、酸性变化和从准铝质向过铝质变化，岩浆性质从高氧化、低氧化到还原性变化。各系列矿床的成矿地质体均表现出多期次 /多阶段特征，是岩浆演化晚期作用的产物。它们总体表现为小岩体，多以岩株、岩脉、岩瘤、岩枝等形式产出。各类成矿地质体的产出规模和深度不尽相同，主要与矿化类型有关，与矿床系列也存在一定关系。总体上，斑岩型、斑岩-角砾岩型矿床等高位侵入体型成矿地质体的规模较小，而夕卡岩型矿床的成矿地质体面积较大。 |
| 英文摘要: |
| Magmatic hydrothermal deposits are closely related to intermediate-acid magmatic rocks, and the metallogenic geological bodies are relatively speci.c. Therefore, the characteristics of metallogenic geological bodies are important indicators for prospecting and prediction of these deposits. Magmatic hydrothermal deposits can be divided into two series (crust-mantle mixed source and crust source) and six subseries. The crust-mantle mixed source magmatic hydrothermal deposits can be divided into Cu-Mo-Au series, Pb-Zn-Ag polymetallic series and Fe series. The crust source magmatic hydrothermal deposits can be divided into W polymetallic series, Sn polymetallic series and rare elements series. From Fe → Cu-Mo-Au → Pb-Zn-Ag → Sn polymetallic → W polymetallic →rare elements series, the characteristics of metallogenic geological bodies have a series of regular evolution: the types of ore-bearing rocks change from intermediate-basic rocks to intermediate-acid and acidic rocks, and the properties of magma change from high oxidability, low oxidability to reducibility. The metallogenic geological bodies of each series of deposits show multi-stage evolution characteristics, which are the products of late magmatism. The metallogenic geological bodies are generally small, mostly in the form of stock, dike, nodules and branches. The scale and depth of various metallogenic geological bodies are different, and they are mainly related to the mineralization type and mineralization series. On the whole, the scale of metallogenic geological bodies of porphyry type and porphyry-breccia type deposits is smaller, while the area of skarn type metallogenic geological bodies is larger. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|