Rasvumite from the Udachnaya-East Pipe: The first finding in kimberlites

Sharygin, Victor V.; Kamenetsky, Vadim S.; Kamenetskaya, M. B.; Seretkin, Yu. V.; Pokhilenko, N. P.

doi:10.1134/s1028334x07060232

Cited by 9 publications

(8 citation statements)

References 8 publications

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“…Fresh kimberlites of the Udachnaya-East pipe are rich in alkalis (up to 8 wt% Na 2 O + K 2 O), chlorine (up to 6 wt%) and sulphur (up to 0.6 wt%) (Maas et al, 2005;Kamenetsky et al, 2007Kamenetsky et al, , 2012Kitayama et al, 2017). They contain different alkali carbonates, sulphates, chlorides and sulphides in the groundmass (Sharygin et al, 2003(Sharygin et al, , 2007a(Sharygin et al, , 2007bKamenetsky et al, 2004;Golovin et al, 2017a) along with typical kimberlitic minerals: olivine, phlogopite, calcite, apatite and oxides (Kamenetsky et al, 2008(Kamenetsky et al, , 2012Chakhmouradian et al, 2013).…”

Section: Geological Backgroundmentioning

confidence: 99%

“…Melt inclusion in Udachnaya-East phenocrystic olivine (Golovin et al, 2003Kamenetsky et al, 2004;Mernagh et al, 2011) Groundmass of unaltered Udachnaya-East kimberlites (Kamenetsky et al, 2004(Kamenetsky et al, , 2008(Kamenetsky et al, , 2009(Kamenetsky et al, , 2012(Kamenetsky et al, , 2014Sharygin et al, 2007aSharygin et al, , 2007b Crystallized melt inclusions in magnetite phenocrysts of the Catanda carbonatite lavas (Campeny et al, 2015) Crystallized primary melt inclusions in olivine of Kovdor carbonatites (Veksler and Lentz, 2006;Veksler et al, 1998…”

Section: Accepted M M a N U mentioning

confidence: 99%

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Alkali-carbonate melts from the base of cratonic lithospheric mantle: Links to kimberlites

et al. 2018

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We studied melt inclusions in olivine of sheared peridotite xenoliths from kimberlites These xenoliths are derived from 180-230 km and are among the deepest mantle rocks Alkali-rich carbonates, halides, sulphates and aragonite were found in melt inclusions Melt inclusions are snapshots Cl-S-alkali-rich carbonate melt originated at > 230 km The high-pressure melt inclusions may represent near primary kimberlite melt

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Section: Geological Backgroundmentioning

confidence: 99%

Section: Accepted M M a N U mentioning

confidence: 99%

Alkali-carbonate melts from the base of cratonic lithospheric mantle: Links to kimberlites

et al. 2018

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“…It also occurs as a daughter mineral in the olivine-hosted melt inclusions (Sharygin et al 2003(Sharygin et al , 2007a. Rasvumite is exceptionally rare in the UEK groundmass, and was first reported by Sharygin et al (2007b). It is present as small (<10-20 mm) anhedral grains in association with djerfisherite; both minerals form a rim around pyrrhotite relics (Figs.…”

Section: Potassium Sulfides In Kimberlites and Chloride-containing CLmentioning

confidence: 97%

Potassium Sulfides in Kimberlite-Hosted Chloride-"Nyerereite" and Chloride Clasts of Udachnaya-East Pipe, Yakutia, Russia

Sharygin

Kamenetsky

2008

The Canadian Mineralogist

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Chloride-bearing clasts from the Udachnaya-East pipe kimberlites, Yakutia, Russia, contain abundant to accessory rasvumite, KFe 2 S 3 , and djerfisherite, K 6 Na 0-1 (Fe,Ni,Cu) 24 S 26 Cl, which have been previously described in the groundmass of the host kimberlite. Rasvumite occurs in chloride-"nyerereite" and carbonate clasts, where it forms prismatic crystals (up to 5 mm) or is associated with djerfisherite in a rim around pyrrhotite. Djerfisherite is the omnipresent sulfide in all types of chloride-containing clasts, in which it rims pyrrhotite and forms individual xenomorphic to subhedral grains and, more rarely, octahedral crystals at the contact with host kimberlite. In chloride clasts and the host kimberlites, the following sequence of crystallization was found: pyrrhotite ! rasvumite ! djerfisherite, reflecting an increase in the activity of Cl in the evolved melt. The composition of rasvumite from the Udachnaya-East pipe is close to ideal KFe 2 S 3 , with low abundances of Rb, Cs and Na (<0.9, <0.2 and <0.15 wt.%, respectively). Analyses of the rasvumite by the LA-ICP-MS technique indicates the presence of Tl (95-480), Ba (110-215), Pb (25-190), Te (up to 60), Se (20-135) and Co (25-100 ppm). These data also indicate compositional differences between unaltered rasvumite and its oxidized rim; the levels of Na, Mg, V, Mn, Ni, As, Sr, Sb and W increase by an order of magnitude. Unlike djerfisherite in the kimberlite groundmass, that in the chloride clasts is generally characterized by higher amounts of Fe and lower amounts of Cu, with low contents of Rb (<2000 ppm), Cs (<100 ppm), and Tl (<330 ppm). Sulfides of potassium in chloride-bearing clasts are considered to be primary phases crystallized from an evolved kimberlitic melt.

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“…Rock salt are spectacular components of the Udachnaya-East kimberlite, and has attracted considerable attention (Kamenetsky et al, 2004(Kamenetsky et al, , 2006Maas et al, 2005;Golovin et al, 2007;Sharygin et al, 2007a, b). In this volume (Polozov et al) we present new data on the geological occurrence of the kimberlite-hosted rock salt, the mineral content and the chlorine isotope composition of the halides.…”

Section: Introduction and Geological Settingmentioning

confidence: 96%

Chlorine isotopes of salts xenoliths from Udachnaya-East kimberlite pipe (Russia)

International Kimberlite Conference Extended Abstracts: 2008

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Rasvumite from the Udachnaya-East Pipe: The first finding in kimberlites

Cited by 9 publications

References 8 publications

Alkali-carbonate melts from the base of cratonic lithospheric mantle: Links to kimberlites

Alkali-carbonate melts from the base of cratonic lithospheric mantle: Links to kimberlites

Potassium Sulfides in Kimberlite-Hosted Chloride-"Nyerereite" and Chloride Clasts of Udachnaya-East Pipe, Yakutia, Russia

Chlorine isotopes of salts xenoliths from Udachnaya-East kimberlite pipe (Russia)

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