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    Micro-Raman study of cesanite (Ca2Na3(OH)(SO4)3) in chloride segregations from Udachnaya-East kimberlites / S. Grishina, S. Goryainov, A. Oreshonkov, N. Karmanov // J. Raman Spectrosc. - 2022. - Vol. 53, Is. 3 : Special Issue: GEORAMAN 2020. - P. 497-507, DOI 10.1002/jrs.6168. - Cited References: 33 . - ISSN 0377-0486. - ISSN 1097-4555
Рубрики:
CARBONATE
   IDENTIFICATION

   INSIGHTS

   APATITE

Кл.слова (ненормированные):
cesanite -- chlorides -- daughter minerals -- halite-hosted sulfate-rich melt inclusions -- kimberlites
Аннотация: Cesanite (Ca2Na3(OH)(SO4)3), a rare mineral, has been found in a few places restricted to a geothermal field and caves. We report the new occurrence of cesanite in quite different geological site—within sulfate-rich melt inclusions in chloride segregations from kimberlites of Udachnaya-East pipe (Siberia). Two halite generations: сesanite free and сesanite-bearing, were distinguished in concentrically zonal segregations according to the results of the mineral and sulfate melt inclusion study by micro-Raman spectroscopy and SEM-EDS. We have applied the Raman spectroscopy and first principles calculations to understand structural and vibrational properties of cesanite daughter mineral in polyphase sulfate inclusions. Polarized spectra provided additional information on the overlapped components of the spectral profile. The Raman spectra of cesanite in the range of OH stretching vibrations are reported for the first time. The study aims to clarify the source of the NaSCl-enrichment in the Udachnaya-East pipe, which is highly discussed.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Sobolev Inst Geol & Mineral, Koptuyg Ave 3, Novosibirsk 630090, Russia.
Russian Acad Sci, Siberian Branch, Fed Res Ctr, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Svobodny Ave 82, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Grishina, Svetlana; Goryainov, Sergey; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Karmanov, Nikolay; International GeoRaman Conference(14th ; November 2 - 5, 2020 ; Bilbao, Spain)
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