Инд. авторы:	Afanasiev V.P., Snegirev O.V., Kozmenko O.A., Pokhilenko N.P.
Заглавие:	Chemical weathering of kimberlitic garnets: An experimental study (organic etching in ATP-Na2 salt)
Библ. ссылка:	Afanasiev V.P., Snegirev O.V., Kozmenko O.A., Pokhilenko N.P. Chemical weathering of kimberlitic garnets: An experimental study (organic etching in ATP-Na2 salt) // Doklady Earth Sciences. - 2014. - Vol.459. - Iss. 2. - P.1528-1532. - ISSN 1028-334X. - EISSN 1531-8354.
Внешние системы:	DOI: 10.1134/S1028334X14120010; SCOPUS: 2-s2.0-84920545984; WoS: 000347690800011;
Реферат:	eng: The morphology of garnets exposed to chemical weathering has been studied experimentally by etching in ATP disodium salt. After eighteen months, pyropes have developed etch patterns on grain surfaces identical to those produced by dissolution in their naturally occurring counterparts from in lateritic profiles. The mineral surface microtopography mainly corresponds to dislocation patterns, though positive elements of cuboid morphology are present as well. Similar corroded surfaces in pyropes have resulted from HF etching for 42 days: dislocation and cuboid dissolution, scratches, etch channels and grooves. Although the dissolution mechanisms are different, both reagents produce similar surface patterns, possibly, because dissolution localizes primarily at structure defects in minerals. However, HF providing much faster dissolution of pyrope is more preferable for the experimental use than ATP-Na2. © 2014, Pleiades Publishing, Ltd.
Ключевые слова:	garnet; experimental study; etching; dissolution; chemical weathering; Weathering; Surface pattern; Structure defects; Naturally occurring; Mineral surfaces; kimberlite; Dislocation pattern; Corroded surface; Chemical weathering; Surface defects; Morphology; Geochemistry; Garnets; Etching; Dissolution; Dissolution mechanism;
Издано:	2014
Физ. характеристика:	с.1528-1532