{"title":"Features of Loparite Dissolution in Aluminosilicate Melts (Experimental Investigation)","authors":"N. I. Suk, A. R. Kotelnikov, A. A. Viryus","doi":"10.1134/S0016702923700143","DOIUrl":null,"url":null,"abstract":"<p>The solubility of loparite (Na,Ce,Ca)<sub>2</sub>(Ti,Nb)<sub>2</sub>O<sub>6</sub>) in aluminosilicate melts of various compositions was experimentally studied at <i>T</i> = 1200 and 1000°C and <i>P</i> = 2 kbar under dry conditions and in the presence of 10 wt % H<sub>2</sub>O in a high gas pressure vessel with a duration of 1 day. The starting material was previously melted artificial glasses of malignite, urtite and eutectic albite–nepheline compositions, as well as natural loparite from the Lovozero massif. The dependence of the loparite solubility on the composition of the aluminosilicate melt (Ca/(Na + K), (Na + K)/Al) has been revealed. Partition coefficients of a number of elements (Ti, Nb, Sr, REE) between silicate melt and loparite crystals (<i>K</i><sub><i>i</i></sub> = <span>\\({{C_{i}^{{{\\text{melt}}}}} \\mathord{\\left/ {\\vphantom {{C_{i}^{{{\\text{melt}}}}} {C_{i}^{{{\\text{lop}}}}}}} \\right. \\kern-0em} {C_{i}^{{{\\text{lop}}}}}}\\)</span>) were estimated.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 4","pages":"372 - 383"},"PeriodicalIF":0.7000,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geochemistry International","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1134/S0016702923700143","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
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Abstract
The solubility of loparite (Na,Ce,Ca)2(Ti,Nb)2O6) in aluminosilicate melts of various compositions was experimentally studied at T = 1200 and 1000°C and P = 2 kbar under dry conditions and in the presence of 10 wt % H2O in a high gas pressure vessel with a duration of 1 day. The starting material was previously melted artificial glasses of malignite, urtite and eutectic albite–nepheline compositions, as well as natural loparite from the Lovozero massif. The dependence of the loparite solubility on the composition of the aluminosilicate melt (Ca/(Na + K), (Na + K)/Al) has been revealed. Partition coefficients of a number of elements (Ti, Nb, Sr, REE) between silicate melt and loparite crystals (Ki = \({{C_{i}^{{{\text{melt}}}}} \mathord{\left/ {\vphantom {{C_{i}^{{{\text{melt}}}}} {C_{i}^{{{\text{lop}}}}}}} \right. \kern-0em} {C_{i}^{{{\text{lop}}}}}}\)) were estimated.
期刊介绍：
Geochemistry International is a peer reviewed journal that publishes articles on cosmochemistry; geochemistry of magmatic, metamorphic, hydrothermal, and sedimentary processes; isotope geochemistry; organic geochemistry; applied geochemistry; and chemistry of the environment. Geochemistry International provides readers with a unique opportunity to refine their understanding of the geology of the vast territory of the Eurasian continent. The journal welcomes manuscripts from all countries in the English or Russian language.
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