| 王彦博,张兴康,陈文良,潘硕.河北省蔚县阳眷地区泥质岩中稀土元素物源及富集机制研究[J].矿产勘查,2026,17(1):151-164 |
| 河北省蔚县阳眷地区泥质岩中稀土元素物源及富集机制研究 |
| Study on the provenance and enrichment mechanism of rare earth elements in argillaceous rocks from the Yangjuan Area, Yuxian, Hebei Province |
| 投稿时间：2025-04-27 |
| DOI：10.20008/j.kckc.202601012 |
| 中文关键词: 含稀土泥质岩 稀土元素 物源 富集机制 阳眷 河北蔚县 |
| 英文关键词: REE-bearing argillaceous rocks rare Yangjuan area Yuxian, Hebei Province |
| 基金项目:本文受河北省自然资源厅地勘基金“河北省蔚县阳眷—郑家窑一带稀土矿预查”项目(13000021611MXRGYAUX02)和“河北省稀有稀土稀散矿产成矿规律及找矿方向研究”项目(13000021GM5KG6TOH871W)联合资助。 |
|
| 摘要点击次数: 205 |
| 全文下载次数: 84 |
| 中文摘要: |
| 河北省蔚县阳眷地区奥陶系冶里组与侏罗系下花园组之间发育一套富含稀土元素的泥质岩。为研究含稀土泥质岩的地球化学特征，稀土元素的赋存状态、物源、古风化环境及富集机制，本文对含稀土泥质岩进行了基本分析、X射线衍射(XRD)、人工重砂等分析测试。研究发现含稀土泥质岩具明显轻稀土富集，轻重稀土分异程度较大，重稀土之间没有出现明显分异的特征。参考前人研究成果，综合本区测试数据认为稀土元素主要以类质同象态存在于伊利石、高岭石等黏土矿物和赤褐铁矿、锆石等副矿物中，稀土元素主要来自变质的二长花岗岩；含稀土泥质岩由高岭石、伊利石等黏土矿物在滨湖、浅湖环境下沉积形成，稀土元素易在偏碱性环境中富集，稀土含量在剖面上呈“上低下高”的特征。 |
| 英文摘要: |
| A set of argillaceous rocks rich in rare earth elements (REEs) develops between the Ordovician YeliFormation and the Jurassic Xiahuayuan Formation in the Yangjuan area, Yuxian, Hebei Province. To study the geo-chemical characteristics, occurrence states, provenance,ancient weathering environment and enrichment mechanism of the REE-bearing argillaceous rocks, tests such as basic analysis, X-ray diffraction (XRD) and artificial heavyconcentrate analysis, etc. were conducted on them. The study found that the REE-bearing argillaceous rocks havethe characteristics of obvious light rare earth enrichment, large differentiation degree between light and heavy rareearths, and no obvious differentiation among heavy rare earths. Referencing previous research results and integrat-ing the test data of this area, it is considered that the rare earth elements mainly exist in the form of isomorphism inclay minerals such as illite and kaolinite, and accessory minerals such as limonite and zircon. The rare earth ele-ments mainly come from metamorphic monzonitic granite. The REE-bearing argillaceous rocks are formed by thedeposition of clay minerals such as kaolinite and illite in the lakeshore and shallow lake environments. Rare earthelements are prone to enrich in slightly alkaline environments, and the REE content shows a characteristic of "low in the upper part and high in the lower part" in the section. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|