K. L. Ushakova, M. V. Charykova, V. G. Krivovichev, N. M. Efimenko, N. V. Platonova, V. N. Bocharov, A. S. Mazur
{"title":"硫化矿氧化区砷酸盐、硒化物和硫酸盐的热力学。XV.Alfredopetrovite 的合成类似物：成分、性质和稳定性极限","authors":"K. L. Ushakova, M. V. Charykova, V. G. Krivovichev, N. M. Efimenko, N. V. Platonova, V. N. Bocharov, A. S. Mazur","doi":"10.1134/s1075701523070139","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The purpose of this work was to synthesize hexahydrate aluminum selenite Al<sub>2</sub>(SeO<sub>3</sub>)<sub>3</sub>⋅6H<sub>2</sub>O (analogous to the mineral alfredopetrovite) and study its solubility in water. Al<sub>2</sub>(SeO<sub>3</sub>)<sub>3</sub>⋅6H<sub>2</sub>O is synthesized from AlCl<sub>3</sub> and Na<sub>2</sub>SeO<sub>3</sub> solutions at room temperature and atmospheric pressure. The obtained samples were studied using powder diffractometry, infrared and Raman spectroscopy, energy-dispersive X-ray microanalysis, nuclear magnetic resonance spectroscopy, and complex thermal analysis. Solubility was determined by isothermal saturation in ampoules at 25°C. Solubility products were calculated using Geochemist’s Workbench software package (GMB 9.0, SpecE8 program). As a result of the calculation, the average value logKsp[Al<sub>2</sub>(SeO<sub>3</sub>)<sub>3</sub>⋅6H<sub>2</sub>O] = –28.3 ± 0.5 was obtained. An Eh–pH diagram is constructed for the Al–Se–H<sub>2</sub>O system, which was used to analyze the stability of alfredopetrovite in near-surface conditions.</p>","PeriodicalId":12719,"journal":{"name":"Geology of Ore Deposits","volume":"14 1","pages":""},"PeriodicalIF":0.8000,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thermodynamics of Arsenates, Selenites, and Sulfates in the Oxidation Zone of Sulfide Ores. XV. Synthetic Analog of Alfredopetrovite: Composition, Properties, and Stability Limits\",\"authors\":\"K. L. Ushakova, M. V. Charykova, V. G. Krivovichev, N. M. Efimenko, N. V. Platonova, V. N. Bocharov, A. S. Mazur\",\"doi\":\"10.1134/s1075701523070139\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Abstract</h3><p>The purpose of this work was to synthesize hexahydrate aluminum selenite Al<sub>2</sub>(SeO<sub>3</sub>)<sub>3</sub>⋅6H<sub>2</sub>O (analogous to the mineral alfredopetrovite) and study its solubility in water. Al<sub>2</sub>(SeO<sub>3</sub>)<sub>3</sub>⋅6H<sub>2</sub>O is synthesized from AlCl<sub>3</sub> and Na<sub>2</sub>SeO<sub>3</sub> solutions at room temperature and atmospheric pressure. The obtained samples were studied using powder diffractometry, infrared and Raman spectroscopy, energy-dispersive X-ray microanalysis, nuclear magnetic resonance spectroscopy, and complex thermal analysis. Solubility was determined by isothermal saturation in ampoules at 25°C. Solubility products were calculated using Geochemist’s Workbench software package (GMB 9.0, SpecE8 program). As a result of the calculation, the average value logKsp[Al<sub>2</sub>(SeO<sub>3</sub>)<sub>3</sub>⋅6H<sub>2</sub>O] = –28.3 ± 0.5 was obtained. An Eh–pH diagram is constructed for the Al–Se–H<sub>2</sub>O system, which was used to analyze the stability of alfredopetrovite in near-surface conditions.</p>\",\"PeriodicalId\":12719,\"journal\":{\"name\":\"Geology of Ore Deposits\",\"volume\":\"14 1\",\"pages\":\"\"},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2024-02-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Geology of Ore Deposits\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.1134/s1075701523070139\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"GEOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geology of Ore Deposits","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1134/s1075701523070139","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOLOGY","Score":null,"Total":0}
Thermodynamics of Arsenates, Selenites, and Sulfates in the Oxidation Zone of Sulfide Ores. XV. Synthetic Analog of Alfredopetrovite: Composition, Properties, and Stability Limits
Abstract
The purpose of this work was to synthesize hexahydrate aluminum selenite Al2(SeO3)3⋅6H2O (analogous to the mineral alfredopetrovite) and study its solubility in water. Al2(SeO3)3⋅6H2O is synthesized from AlCl3 and Na2SeO3 solutions at room temperature and atmospheric pressure. The obtained samples were studied using powder diffractometry, infrared and Raman spectroscopy, energy-dispersive X-ray microanalysis, nuclear magnetic resonance spectroscopy, and complex thermal analysis. Solubility was determined by isothermal saturation in ampoules at 25°C. Solubility products were calculated using Geochemist’s Workbench software package (GMB 9.0, SpecE8 program). As a result of the calculation, the average value logKsp[Al2(SeO3)3⋅6H2O] = –28.3 ± 0.5 was obtained. An Eh–pH diagram is constructed for the Al–Se–H2O system, which was used to analyze the stability of alfredopetrovite in near-surface conditions.
期刊介绍：
Geology of Ore Deposits is a periodical covering the topic of metallic and nonmetallic mineral deposits, their formation conditions, and spatial and temporal distribution. The journal publishes original scientific articles and reviews on a wide range of problems in theoretical and applied geology. The journal focuses on the following problems: deep geological structure and geodynamic environment of ore formation; distribution pattern of metallogenic zones and mineral deposits; geology and formation environment of large and unique metallic and nonmetallic deposits; mineralogy of metallic and nonmetallic deposits; physicochemical and isotopic characteristics and geochemical environment of ore deposition; evolution of ore-forming systems; radiogeology and radioecology, economic problems in exploring, developing, and mining of ore commodities.
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