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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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 |
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Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
rasvumite djerfisherite chloride carbonatite kimberlite |
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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>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.3749/canmin.46.4.1079 |
container_title |
The Canadian Mineralogist |
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46 |
container_issue |
4 |
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1079 |
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1095 |
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