Инд. авторы:	Buravleva S.Y., Smirnov S.Z., Pakhomova V.A., Fedoseev D.G.
Заглавие:	Sapphires from the Sutara placer in the Russian far east
Библ. ссылка:	Buravleva S.Y., Smirnov S.Z., Pakhomova V.A., Fedoseev D.G. Sapphires from the Sutara placer in the Russian far east // Gems and Gemology. - 2016. - Vol.52. - Iss. 3. - P.252-264. - ISSN 0016-626X.
Внешние системы:	DOI: 10.5741/GEMS.52.3.252; SCOPUS: 2-s2.0-84995639428; WoS: 000387389400004;
Реферат:	eng: From 2009 to 2011, sapphire crystals and corundum-bearing rocks were discovered at Sutara, in the Jewish Autonomous Region of the Russian Far East. These sapphires are typically translucent to semitransparent and blue to pinkish blue. Most of the crystals are heavily included and display prominent growth zoning, twinning planes, and abundant exsolution lamellae. Their primary fluid inclusions contain diaspore crystals and a lowdensity CO2-CH4 mixture. These inclusions indicate that sapphire mineralization occurred by means of low-density aqueous-carbonic fluids, which were able to carry significant concentrations of alumina. These fluids may have formed as a result of thermal impact of granitic magma on carbonate country rocks. The authors consider Sutara a metamorphic occurrence that formed as a result of diffusive and metasomatic processes at a region of contact between carbonate rocks and pegmatite veins. © 2016 Gemological Institute of America.
Издано:	2016
Физ. характеристика:	с.252-264