| 福建李坊重晶石矿床锶同位素组成及成因意义 |
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| 引用本文： | 陈 宪,黎敦朋,崔碧云,肖爱芳.福建李坊重晶石矿床锶同位素组成及成因意义[J].福州大学学报(自然科学版),2020,48(3):404-410. |
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| 作者姓名： | 陈 宪 黎敦朋 崔碧云 肖爱芳 |
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| 作者单位： | 福州大学 紫金矿业学院,福州大学 紫金矿业学院,福州大学 紫金矿业学院,福州大学 紫金矿业学院 |
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| 基金项目： | 福建省自然科学基金项目“闽西南寒武纪中低温热水沉积作用与成矿效应研究：以李坊特大型重晶石为例（编号：2017J01467） |
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| 摘 要： | 通过对李坊重晶石矿床重晶石的Sr同位素分析,探讨钡的物质来源.结果显示,重晶石的Rb含量为2.70×10~(-6)～13.41×10~(-6), Sr含量为520.40×10~(-6)～2 166.00×10~(-6),~(87)Rb/~(86)Sr比值低,~(87)Sr/~(86)Sr比值介于0.710 81～0.711 80之间,平均值为0.711 26,高于同时期海水锶的~(87)Sr/~(86)Sr比值,低于壳源锶的~(87)Sr/~(86)Sr平均值,表明重晶石的锶来自海水锶与壳源锶的混合.示踪结果显示重晶石的钡主要来源于下伏地层,并暗示基底属于大陆型地壳.
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| 关 键 词： | 李坊重晶石矿床 锶同位素 成矿物质来源 |
| 收稿时间： | 2020/1/8 0:00:00 |
| 修稿时间： | 2020/3/20 0:00:00 |
Strontium isotope composition and genesis significance of the Lifang barite deposit in Fujian Province |
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| CHEN Xian,LI Dunpeng,CUI Biyun and XIAO Aifang.Strontium isotope composition and genesis significance of the Lifang barite deposit in Fujian Province[J].Journal of Fuzhou University(Natural Science Edition),2020,48(3):404-410. |
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| Authors: | CHEN Xian LI Dunpeng CUI Biyun and XIAO Aifang |
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| Institution: | Zijin College of Mining,Fuzhou University,Fujian Fuzhou 350108,Zijin College of Mining,Fuzhou University,Fujian Fuzhou 350108,Zijin College of Mining,Fuzhou University,Fujian Fuzhou 350108,Zijin College of Mining,Fuzhou University,Fujian Fuzhou 350108 |
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| Abstract: | By means of strontium isotopes of the barite in the Lifang barite deposit in Fujian Province, the material origin of barium is discussed in the paper. The Rb content of the barite is (2.70-9.96) × 10-6, and the Sr content is (520.40-2166.00) × 10-6, the 87Rb/86Sr ratio is low. The 87Sr/86Sr ratio is from 0.71081 to 0.71180 with an average value of 0.71126, which is much higher than the 87Sr/86 of seawater strontium in the Silurian, and lower than the average value of 87Sr/86 Sr of crust source strontium. Which represent that the strontium of the barium deposit comes from the mixture of seawater strontium and crust source strontium. The results show that material source of the barium comes from the underlying strata and implies that the basement belongs to the continental crust. |
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| Keywords: | Lifang barite deposit strontium isotope material source of ore-forming |
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