| 华蓥山地区天青石矿稀土元素地球化学特征 |
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| 引用本文： | 周建民,王吉平,杨清堂,朱敬宾,邓小林,胡墨田.华蓥山地区天青石矿稀土元素地球化学特征[J].化工矿产地质,2004,26(1):19-22. |
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| 作者姓名： | 周建民 王吉平 杨清堂 朱敬宾 邓小林 胡墨田 |
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| 作者单位： | 中化地质矿山地质总局地质研究院,河北涿州,072754 |
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| 摘 要： | 华蓥山地区天青石矿各类型天青石的稀土总量(∑REE)均较低,为轻稀土富集型。巨晶天青石和条带状矿石之白色条带状天青石具铕的正异常,为热卤水成因,层状和条带状矿石之暗色条带天青石具δ Eu的负异常,与碳酸盐岩围岩一致,为沉积成因。区内天青石、碳酸盐岩表现为δ Ce的轻度负异常或无异常,与该区早三叠世嘉陵江组沉积时期所处的含膏泻湖相沉积环境有关。
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| 关 键 词： | 天青石 稀土元素 矿磷型 成因 |
| 文章编号： | 1006-5296(2004)01-0019-04 |
| 修稿时间： | 2003年6月23日 |
GEOCHEMICAL FEATURES OF RARE EARTH ELEMENTS OF CELESTITE IN HUAYING MOUNTAINS AREA |
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| Zhou Jianmin Wang Jipng Yang Qingtang Zhu Jingbin Deng Xiaolin Hu Motian Geological Institute,China Chemical Geology & Mining Bureau,Zhuozhou,Hebei,China.GEOCHEMICAL FEATURES OF RARE EARTH ELEMENTS OF CELESTITE IN HUAYING MOUNTAINS AREA[J].Geology of Chemical Minerals,2004,26(1):19-22. |
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| Authors: | Zhou Jianmin Wang Jipng Yang Qingtang Zhu Jingbin Deng Xiaolin Hu Motian Geological Institute China Chemical Geology & Mining Bureau Zhuozhou Hebei China |
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| Institution: | Zhou Jianmin Wang Jipng Yang Qingtang Zhu Jingbin Deng Xiaolin Hu Motian Geological Institute,China Chemical Geology & Mining Bureau,Zhuozhou,Hebei,072754,China |
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| Abstract: | Geochemical features of rare earth elements of celestite deposited in Huaying Mountains area were studied in this paper. There are three nature ore types of celestite ore in the area: megacryst , bedded and banded celestite ore. The Latter is made up of dark celestite bands and white celestite bands, both occurring as interbeds. Surrounding rocks of the celestite ore is Triassic System dolomite and limestone. ∑REE of the celestite ore and surrounding rock are lower. The partitioning pattern of the rare element is light rare element enrichment type. The ∑REE of the bedded celestite is come close to that of the surrounding rock. δEu values of the bedded celestite, dark band celestite and surrounding rock are all negative anomaly, and it is indicated by the negative anomaly that the bedded and dark band celestite are of sedimentary origin. δEu values of the megacryst celestite and white band celestite are positive anomaly, which are similar to that of the East Pacific hot spring water and Red Sea hot-brine water. It can be deduced that the megacryst and white band celestite are of hot-brine origin.δCe values of the celestite ore and their surrounding rock in Huaying Mountains area are light negative anomaly or not anomaly, which is related to depositional enviroment of gysum-bearing lagoonal facies during Jialingjiang Age of Early Triassic in the area. |
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| Keywords: | celestite rare earth element Sichuan Chongqing |
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