Yu. D. Gritsenko, M. O. Bulakh, L. P. Ogorodova, M. F. Vigasina, L. V. Melchakova, D. A. Ksenofontov
{"title":"堪察加托尔巴奇克火山 1004 山古风孔中的 Atacamite：热力学性质","authors":"Yu. D. Gritsenko, M. O. Bulakh, L. P. Ogorodova, M. F. Vigasina, L. V. Melchakova, D. A. Ksenofontov","doi":"10.1134/S001670292402006X","DOIUrl":null,"url":null,"abstract":"<p>Atacamite, empirical formula (Cu<sub>1.97</sub>Zn<sub>0.01</sub>)Cl<sub>0.94</sub>(OH)<sub>3.02</sub>, from the paleofumaroles of the monogenic volcano of Mount 1004, Tolbachik, Kamchatka, Russia, has been studied by thermal and electron microprobe analyses, X-ray powder diffraction, IR and Raman spectroscopy, and Calvet microcalorimetry. The thermal decomposition of atacamite was studied using X-ray diffraction and IR spectroscopy. The enthalpy of formation from elements for atacamite of the theoretical composition Cu<sub>2</sub>Cl(OH)<sub>3</sub> (−810.2 ± 7.7 kJ/mol) was determined by melt dissolution calorimetry, and the Gibbs energy of formation (−657.0 ± 7.7 kJ/mol) was calculated. The stability of atacamite in the Cu–O–Cl–H system was thermodynamically modeled based on the obtained data, and the boundaries of its stability field were calculated under conditions of high alkalinity and high acidity of the mineral-forming medium.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 2","pages":"172 - 183"},"PeriodicalIF":0.7000,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Atacamite from the Paleofumaroles of Mount 1004, Tolbachik Volcano, Kamchatka: Thermodynamic Properties\",\"authors\":\"Yu. D. Gritsenko, M. O. Bulakh, L. P. Ogorodova, M. F. Vigasina, L. V. Melchakova, D. A. Ksenofontov\",\"doi\":\"10.1134/S001670292402006X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Atacamite, empirical formula (Cu<sub>1.97</sub>Zn<sub>0.01</sub>)Cl<sub>0.94</sub>(OH)<sub>3.02</sub>, from the paleofumaroles of the monogenic volcano of Mount 1004, Tolbachik, Kamchatka, Russia, has been studied by thermal and electron microprobe analyses, X-ray powder diffraction, IR and Raman spectroscopy, and Calvet microcalorimetry. The thermal decomposition of atacamite was studied using X-ray diffraction and IR spectroscopy. The enthalpy of formation from elements for atacamite of the theoretical composition Cu<sub>2</sub>Cl(OH)<sub>3</sub> (−810.2 ± 7.7 kJ/mol) was determined by melt dissolution calorimetry, and the Gibbs energy of formation (−657.0 ± 7.7 kJ/mol) was calculated. The stability of atacamite in the Cu–O–Cl–H system was thermodynamically modeled based on the obtained data, and the boundaries of its stability field were calculated under conditions of high alkalinity and high acidity of the mineral-forming medium.</p>\",\"PeriodicalId\":12781,\"journal\":{\"name\":\"Geochemistry International\",\"volume\":\"62 2\",\"pages\":\"172 - 183\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2024-04-03\",\"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/S001670292402006X\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geochemistry International","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1134/S001670292402006X","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}
Atacamite from the Paleofumaroles of Mount 1004, Tolbachik Volcano, Kamchatka: Thermodynamic Properties
Atacamite, empirical formula (Cu1.97Zn0.01)Cl0.94(OH)3.02, from the paleofumaroles of the monogenic volcano of Mount 1004, Tolbachik, Kamchatka, Russia, has been studied by thermal and electron microprobe analyses, X-ray powder diffraction, IR and Raman spectroscopy, and Calvet microcalorimetry. The thermal decomposition of atacamite was studied using X-ray diffraction and IR spectroscopy. The enthalpy of formation from elements for atacamite of the theoretical composition Cu2Cl(OH)3 (−810.2 ± 7.7 kJ/mol) was determined by melt dissolution calorimetry, and the Gibbs energy of formation (−657.0 ± 7.7 kJ/mol) was calculated. The stability of atacamite in the Cu–O–Cl–H system was thermodynamically modeled based on the obtained data, and the boundaries of its stability field were calculated under conditions of high alkalinity and high acidity of the mineral-forming medium.
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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