| 张明,汪小勇,刘建中,何金坪,龙成雄.贵州修文比例坝铝土矿成矿物质来源及沉积环境研究[J].贵州地质,2018,35(2):88-95 |
| 贵州修文比例坝铝土矿成矿物质来源及沉积环境研究 |
| Ore Forming Materials Source and Sedimentary Environment Study of Biliba Bauxite Deposit in Xiuwen，Guizhou Province |
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| DOI： |
| 中文关键词: 铝土矿 物质来源 沉积环境 比例坝 贵州 |
| 英文关键词:Bauxite deposit Material source Sedimentary environment Biliba Guizhou |
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| 中文摘要: |
| 本文以比例坝铝土矿为对象，研究了矿床稀土元素地球化学特征，U、Th等沉积地球化学标志元素特征，进而对其成矿物质来源、沉积环境进行了讨论。结果表明，矿石中稀土配分模式为轻稀土富集型，具明显Eu负异常，与下寒武统娄山关群白云岩稀土特征参数和配分模式相似，矿床成矿物质可能主要来源于寒武统娄山关群白云岩。沉积环境为以相对还原环境沉积为主导、形成于半咸水-咸水淡化泻湖环境。 |
| 英文摘要: |
| In this paper，Biliba bauxite deposit is taken as the target，the geochemical characteristics of REE and sedimentary geochemical sign element characteristics of U，Th and others are studied ，the its mineral material source and sedimentary environment are discussed. The results shows the rare earth distribution of the ore is light rare earth enrichment，has obvious negative Eu anomaly，similar to the parameters and distribution pattern of lower Cambrian Loushanguan formation dolomite rare earth. The sedimentary environment mainly is relative reducing sedimentary environment，then formed brackish water-salt water desalination lagoon environment. |
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