Инд. авторы:	Drebushchak V.A., Seryotkin Y.V., Kokh S.N., Sokol E.V.
Заглавие:	Natural specimen of triple solid solution ettringite-thaumasite-chromate- ettringite
Библ. ссылка:	Drebushchak V.A., Seryotkin Y.V., Kokh S.N., Sokol E.V. Natural specimen of triple solid solution ettringite-thaumasite-chromate- ettringite // Journal of Thermal Analysis and Calorimetry. - 2013. - Vol.114. - Iss. 2. - P.777-783. - ISSN 1388-6150. - EISSN 1572-8943.
Внешние системы:	DOI: 10.1007/s10973-013-2989-3; SCOPUS: 2-s2.0-84892953539;
Реферат:	eng: Three natural minerals of ettringite group were investigated by TG to refine their chemical composition. Two samples are ettringite Ca 5.97Mg0.01Sr0.02Al1.99Cr 0.01(SO4)3 (OH)12·23.7H 2O and bentorite Ca5.99Mg0.01Cr 1.95Al0.01Si0.03 (SO4) 2.82·(CO3)0.20(OH)12· 19.4H2O, but the third one Ca5.99 Na0.01Al 1.38Si0.62(SO4)2.49·(CrO 4)0.36·(CO3)0.46(OH) 12·15.8 H2O has found to be a solid solution among ettringite, thaumasite, and chromate-ettringite, not registered yet as a new mineral species. Similar phase is well known in concrete formed with Cr 6+ admixture, but is found for the first time as a natural compound. X-ray single-crystal investigation allowed us to refine the structure and support substitution (SO4)2- ↔ (CrO4) 2- in natural minerals of ettringite group. © Akadémiai Kiadó, Budapest, Hungary 2013.
Ключевые слова:	TG; Chemical compositions; Ettringite groups; Ettringites; Natural compounds; Natural minerals; New mineral species; Structure refinements; TG; Aluminum; Solid solutions; Sulfate minerals; Silicon; Silicate minerals; Chromates; Calcium; Solid solution; Ettringite group; Structure refinement; Chromate species;
Издано:	2013
Физ. характеристика:	с.777-783