| 叶霖,刘铁庚.陕南勉宁略地区铜厂铜矿地球化学特征[J].地质找矿论丛,1997,(4):17-22 |
| 陕南勉宁略地区铜厂铜矿地球化学特征 |
| THE STUDY OF GEOCHEMICAL FEATURE IN TONGCHANG COPPER DEPOSIT |
| 投稿时间：1997-09-01 修订日期：1997-09-18 |
| DOI：10.6053/j.issn.1001-1412.1997.4. 003 |
| 中文关键词: 铜厂铜矿 地球化学特征 成矿模式 稳定同位素 成矿热液 |
| 英文关键词:Tongchang copper deposit forhemisical feature hydrothermal solution isotopic element |
| 基金项目: |
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| 中文摘要: |
| 通过对陕南钢厂铜矿的地球化学研究,笔者认为钢厂矿区对应的大地构造环境应为岛弧及其活动大陆边缘,细碧岩的原岩为钙碱性大陆系列,随着海西早期闪长岩的侵入,带来了汽液、热动力和部分成矿物质,形成富含CI、Na+和K+岩浆热液与天水的混合效液,在这种混合热液的作用下,使地层——晚元古代郭家沟组细碧岩和海西早期间长岩中Cu等成矿物质活化,并以CI等络合物形式搬运,在闪长岩体内外接触带的构造片理化带中富集成矿,本矿床属于与闪长岩(次火山岩)有关的中低温铜矿床,并建议该矿的找矿标志为:(1)绢云母化；(2)包裹体特征；(3)F和CI含量；(4)黄铁矿的热电系数。 |
| 英文摘要: |
| Tongchang deposit is a very important copper deposit type in south of Shanxi province. By studying the geochemical feature of the deposit, we discuss the source of hydrothermal ore-forming solution and mineralization mass, and conclude the metallogenic model. The prototype of spilite, which is the main outcropping stratum (Pt29 9O3~908Ma) in mine area, belongs to calealkaline volcanic suite. After Upper Proterozoic, the instrusive of Hercynian diorite brought gasliquid, thermdynamic and some mineralization mass, formed the mixing hydrothermal solution rich in CI-, Na+ and K+ which mixed by magmatic hydrothermal solutinn and rain water. The metallogenic elements in spilite and diorite were activated were by the mixing hydrothermal solution and transported by Cl-complex and enriched mineralization in the endocontact and exocontact of diorite. The deposit belongs to low-to-mederate temPerature type which can be correlated with subvolcanic rock. |
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