Sapphires from the Sutara placer in the Russian far east. / Buravleva, Svetlana Yuryevna; Smirnov, Sergey Zakharovich; Pakhomova, Vera Alekseevna et al.
In: Gems and Gemology, Vol. 52, No. 3, 01.09.2016, p. 252-264.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Sapphires from the Sutara placer in the Russian far east
AU - Buravleva, Svetlana Yuryevna
AU - Smirnov, Sergey Zakharovich
AU - Pakhomova, Vera Alekseevna
AU - Fedoseev, Dmitrii Gennadyevich
PY - 2016/9/1
Y1 - 2016/9/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84995639428&partnerID=8YFLogxK
U2 - 10.5741/GEMS.52.3.252
DO - 10.5741/GEMS.52.3.252
M3 - Article
AN - SCOPUS:84995639428
VL - 52
SP - 252
EP - 264
JO - Gems and Gemology
JF - Gems and Gemology
SN - 0016-626X
IS - 3
ER -
ID: 25762179