Potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of Udachnaya-East Pipe, Yakutia, Russia

Chloride-bearing clasts from the Udachnaya-East pipe kimberlites, Yakutia, Russia, contain abundant to accessory rasvumite, KFe2S3, and djerfisherite, K6Na0-1(Fe,Ni,Cu)(24)S26Cl, which have been previously described in the groundmass of the host kimberlite. Rasvumite occurs in chloride-"nyerere...

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Published in:The Canadian Mineralogist
Main Authors: Sharygin, VV, Kamenetsky, VS, Kamenetsky, MB
Format: Article in Journal/Newspaper
Language:English
Published: 2008
Subjects:
Online Access:https://eprints.utas.edu.au/8095/
https://eprints.utas.edu.au/8095/1/CanMineral-2008.pdf
https://doi.org/10.3749/canmin.46.4.1079
id ftunivtasmania:oai:eprints.utas.edu.au:8095
record_format openpolar
spelling ftunivtasmania:oai:eprints.utas.edu.au:8095 2023-05-15T18:44:58+02:00 Potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of Udachnaya-East Pipe, Yakutia, Russia Sharygin, VV Kamenetsky, VS Kamenetsky, MB 2008-08 application/pdf https://eprints.utas.edu.au/8095/ https://eprints.utas.edu.au/8095/1/CanMineral-2008.pdf https://doi.org/10.3749/canmin.46.4.1079 en eng https://eprints.utas.edu.au/8095/1/CanMineral-2008.pdf Sharygin, VV, Kamenetsky, VS and Kamenetsky, MB 2008 , 'Potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of Udachnaya-East Pipe, Yakutia, Russia' , Canadian Mineralogist, vol. 46, no. 4 , pp. 1079-1095 , doi:10.3749/canmin.46.4.1079 <http://dx.doi.org/10.3749/canmin.46.4.1079>. cc_utas rasvumite djerfisherite chloride carbonatite kimberlite Article PeerReviewed 2008 ftunivtasmania https://doi.org/10.3749/canmin.46.4.1079 2020-05-30T07:21:50Z Chloride-bearing clasts from the Udachnaya-East pipe kimberlites, Yakutia, Russia, contain abundant to accessory rasvumite, KFe2S3, and djerfisherite, K6Na0-1(Fe,Ni,Cu)(24)S26Cl, 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 KFe2S3, 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 T1 (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. Article in Journal/Newspaper Yakutia University of Tasmania: UTas ePrints The Canadian Mineralogist 46 4 1079 1095
institution Open Polar
collection University of Tasmania: UTas ePrints
op_collection_id ftunivtasmania
language English
topic rasvumite
djerfisherite
chloride
carbonatite
kimberlite
spellingShingle rasvumite
djerfisherite
chloride
carbonatite
kimberlite
Sharygin, VV
Kamenetsky, VS
Kamenetsky, MB
Potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of Udachnaya-East Pipe, Yakutia, Russia
topic_facet rasvumite
djerfisherite
chloride
carbonatite
kimberlite
description Chloride-bearing clasts from the Udachnaya-East pipe kimberlites, Yakutia, Russia, contain abundant to accessory rasvumite, KFe2S3, and djerfisherite, K6Na0-1(Fe,Ni,Cu)(24)S26Cl, 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 KFe2S3, 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 T1 (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.
format Article in Journal/Newspaper
author Sharygin, VV
Kamenetsky, VS
Kamenetsky, MB
author_facet Sharygin, VV
Kamenetsky, VS
Kamenetsky, MB
author_sort Sharygin, VV
title Potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of Udachnaya-East Pipe, Yakutia, Russia
title_short Potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of Udachnaya-East Pipe, Yakutia, Russia
title_full Potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of Udachnaya-East Pipe, Yakutia, Russia
title_fullStr Potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of Udachnaya-East Pipe, Yakutia, Russia
title_full_unstemmed Potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of Udachnaya-East Pipe, Yakutia, Russia
title_sort potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of udachnaya-east pipe, yakutia, russia
publishDate 2008
url https://eprints.utas.edu.au/8095/
https://eprints.utas.edu.au/8095/1/CanMineral-2008.pdf
https://doi.org/10.3749/canmin.46.4.1079
genre Yakutia
genre_facet Yakutia
op_relation https://eprints.utas.edu.au/8095/1/CanMineral-2008.pdf
Sharygin, VV, Kamenetsky, VS and Kamenetsky, MB 2008 , 'Potassium sulfides in kimberlite-hosted chloride-"nyerereite" and chloride clasts of Udachnaya-East Pipe, Yakutia, Russia' , Canadian Mineralogist, vol. 46, no. 4 , pp. 1079-1095 , doi:10.3749/canmin.46.4.1079 <http://dx.doi.org/10.3749/canmin.46.4.1079>.
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container_title The Canadian Mineralogist
container_volume 46
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