云南临沧花岗岩带回龙卡离子吸附型稀土矿床地质特征和控制因素
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本文为中国地质调查局地质调查项目 (编号:DD20179604)的成果。


Geological characteristics and controlling factors of the Huilongka ion- adsorption type REE deposit in Lincang granite belt, Yunnan Province
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    摘要:

    云南临沧回龙卡稀土矿床位于临沧花岗岩带南端,为新发现的大型离子吸附型稀土矿床。基于该矿区矿床地质特征、工程见矿特征和分析测试资料,结合典型钻孔剖析,探讨了回龙卡离子吸附型稀土矿床地质特征和控制因素。回龙卡稀土矿床属于轻稀土离子吸附型稀土矿床,表现出“普遍含矿,西贫东富”的显著特点,总体上可划分为工业矿体分布区、低品位矿体分布区和无矿区。中酸性岩体即黑云二长花岗岩为稀土成矿提供了物质来源;地形地貌控制着稀土元素的富集保存和垂向分布形态。高陡第一阶梯工业矿体找矿难度较大,其深部一般可形成低品位矿体;宽缓第二阶梯是最有利的找矿区域,可形成规模工业矿体;低洼第三阶梯一般难以形成矿体。湿热气候和充足降水为岩体经受持续的风化淋滤作用形成有利的全风化赋矿层提供了条件。

    Abstract:

    The Huilongka REE deposit, Lincang, Yunnan, located in the south of Lincang granite belt, is a large ion- adsorption type REE deposit newly discovered. By analyzing geological characteristics, drilling result and test data in research area, based on analysis of typical drilling, mineralization regularity and controlling factors of the Huilongka ion- adsorption type REE deposit were explorered. The Huilongka REE deposits are light rare earth ion adsorption type, showing the distinctive features of “mineralization universally, richer in east and poorer in west”. The research area was divided into three parts: industrial ore distribution area, low grade ore distribution area and non- mineral distribution area. The biotite monzogranite provides mineralization material for the deposit. According to the topography, the study area can be divided into the high steep first step,the gentle second step and the low third step. The topography controls the enrichment, preservation and vertical distribution of rare earth elements. The second step is the most favorable prospecting feature, which can form a scale industrial ore body. It’s difficult to find industrial ore in the first step, and its deep part can generally form low- grade ore. The third step is generally difficult to form ore bodies. The hot and humid climate and sufficient precipitation provide conditions for fully weathered layer formation providing metallogenic space.

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张保涛,蓝信杰,金刚,李星亮,张永三,胡兆国,孙璐伟,王向伟,张修龙,郭伟.2020.云南临沧花岗岩带回龙卡离子吸附型稀土矿床地质特征和控制因素[J].地质论评,66(2):380-392,[DOI].
ZHANG Baotao, LAN Xinjie, JIN Gang, LI Xingliang, ZHANG Yongsan, HU Zhaoguo, SUN Luwei, WANG Xiangwei, ZHANG Xiulong, GUO Wei.2020. Geological characteristics and controlling factors of the Huilongka ion- adsorption type REE deposit in Lincang granite belt, Yunnan Province[J]. Geological Review,66(2):380-392.

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  • 收稿日期:2019-08-14
  • 最后修改日期:2020-02-08
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  • 在线发布日期: 2020-03-16
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