| 滇东南丘北县大铁铝土矿稀土元素特征研究 |
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| 关键词:Qiubei Datie bauxite REE metallogenic material |
| 基金项目:“云南省铝土矿成矿规律与成矿预测研究”项目(编号: 20100610-02) |
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| REE Characteristics of the Datie Bauxite Deposit in Qiubei County, Northwest Yunnan Province |
| With the aluminum-bearing rock series of the Datie bauxite deposit in Qiubei County as the study object, the authors studied REE characteristics of aluminum-bearing rock series and underlying limestone and basalt by means of ICP-MS analysis. The results show that the REE patterns of aluminum-bearing rock series in the Datie bauxite deposit are right-oblique curves, which are similar to REE pattern curves of the underlying Maping For-mation and Huanglong Formation limestone but are quite different from the REE pattern curves of the Emeishan basalt. The limestone has fairly obvious Ce negative anomalies and Eu negative anomalies, some bauxite and fer-rallitic rocks have obvious Ce positive anomalies and fairly obvious Eu negative, whereas most bauxite, ferrallitic rocks and aluminous claystone have no obvous Ce and Eu anomalies. REE characteristics of the aluminum-bearing rock series suggest that the ore-forming materials were derived from the underlying limestone instead of from the basalt, that the ore-forming materials of the bauxite were sourced from the weathering crust with small transport distance, and that the mineralization had no evident relationship with the hydration of the sea water. |
| WANG Xing-jun,WANG Gen-hou,ZHOU Jie,CUI Yin-liang,ZHANG Dao-hong,LI Wei-qing,FAN Liang-jun.2013.REE Characteristics of the Datie Bauxite Deposit in Qiubei County, Northwest Yunnan Province[J].Acta Geoscientica Sinica,34(s1):127-134. |
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