| 傅晓明,息朝庄.青海德合龙洼金铜矿床地质地球化学特征[J].地质找矿论丛,2010,25(2):124-128,140 |
| 青海德合龙洼金铜矿床地质地球化学特征 |
| GEOLOGICAL AND GEOCHEMICAL CHARACTERISTICS OF DEHELONGWA GOLD-COPPER DEPOSIT IN QINGHAI |
| 投稿时间：2009-03-07 |
| DOI：10.6053/j.issn.1001-1412.2010.2. 006 |
| 中文关键词: 德合龙洼金铜矿 微量元素 稀土元素 地球化学特征 青海省 |
| 英文关键词:Dehelongwa gold-copper deposit trace element rare earth element geochemical characteristics Qinghai province |
| 基金项目:国家科技攻关项目(编号2004BA615-02);湖南省自然科学基金(编号07JJ6071)联合资助 |
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| 中文摘要: |
| 通过对青海德合龙洼金铜矿床矿石稀土元素、微量元素、铅硫同位素地球化学特征的研究,稀土总量(ΣREE)为14.22×10-6~176.54×10-6;LREE/HREE为2.37~12.19,轻稀土富集,重稀土亏损,大部分具有正铕异常;微量元素中Ba,Sr,Ti亏损,低场强元素含量较低,高场强元素Sc,Th,U,Zr,Hf,Nb,Ta中,Zr的质量分数最高,亲铁元素中V强烈富集;硫同位素δ(34S)=+2.2×10-3~+7.0×10-3,平均值为+4.98×10-3,均一化程度较高;铅同位素的数据点主要分布于上地壳铅和造山带铅之间;认为德合龙洼金矿的成矿物质来源主要为壳幔混合源。 |
| 英文摘要: |
| Based on geology and geochemical characteristics of ore trace elements,rare earth elements and Pb,S isotopes in Dehelongwa gold-copper deposit,such as(ΣREE)14.22×10-6～176.54×10-6;LREE/HREE 2.37～12.19,LREE concentration and HREE depletion and Eu positive anomaly,trace elements Ba,Sr,Ti depletion,low field strength elements,the highest Zr among high field strength elements Sc,Th,U,Zr,Hf,Nb,Ta,the highest concentration of V among siderophile elements,highly homogenized S isotopes(δ(34S)=+2.2×10-3～+7.0×10-3,the average,+4.98×10-3) and falling of S isotopic data between the upper mantle Pb and orogenic belt Pb the authors have reached the conclusion that the Dehelongwa gold-copper deposit derived its ore-forming materials from crust-mantle mixation. |
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