Kelyphite Rims on Garnets of Contrast Parageneses in Mantle Xenoliths from the Udachnaya-East Kimberlite Pipe (Yakutia)
A new classification of kelyphitic rims on garnets from xenoliths of peridotitic and eclogitic parageneses of the mantle section under the Udachnaya-East kimberlite pipe (Yakutia) is presented. Five types of rims are identified: Rim1 develops between garnet and olivine/pyroxene (or rim2) and is comp...
Published in: | Minerals |
---|---|
Main Author: | |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2021
|
Subjects: | |
Online Access: | https://doi.org/10.3390/min11060615 |
id |
ftmdpi:oai:mdpi.com:/2075-163X/11/6/615/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2075-163X/11/6/615/ 2023-08-20T04:10:20+02:00 Kelyphite Rims on Garnets of Contrast Parageneses in Mantle Xenoliths from the Udachnaya-East Kimberlite Pipe (Yakutia) Lyudmila Pokhilenko agris 2021-06-08 application/pdf https://doi.org/10.3390/min11060615 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/min11060615 https://creativecommons.org/licenses/by/4.0/ Minerals; Volume 11; Issue 6; Pages: 615 kelyphite rim megacrystalline peridotite sheared peridotite high-alumina pyroxene metasomatism Text 2021 ftmdpi https://doi.org/10.3390/min11060615 2023-08-01T01:54:41Z A new classification of kelyphitic rims on garnets from xenoliths of peridotitic and eclogitic parageneses of the mantle section under the Udachnaya-East kimberlite pipe (Yakutia) is presented. Five types of rims are identified: Rim1 develops between garnet and olivine/pyroxene (or rim2) and is composed of high-alumina pyroxenes, spinel, phlogopite; rim2, the coarse grain part of rim1, is located between rim1 and olivine/pyroxene, and mainly consists of phlogopite and less aluminous larger pyroxenes and spinel; rim3 develops between garnet and kimberlite, and presents with phlogopite and Fe-Ti spinel; rim4 sometimes presents instead of rim1/rim2 and consists of zoned high-Cr phlogopite with rare fine grains of chromium spinel; rim5, a “pocket” between garnet and rim1, is represented by microcrystalline aggregates of clinopyroxene, mica, spinel, calcite, and feldspar in different variations. Rims 1, 2, and 3 are typical for garnets of all studied parageneses. Rims 4 and 5 develop on high-Cr subcalcic garnets of the most depleted peridotites. Reactions of the formation of all types of rims are given in the article. Each type of kelyphite demonstrates a clear enrichment with a certain component: Rim1—MgO and alkalis; rim2—TiO2; rim3—FeO and TiO2; rim4—Cr2O3; and rim5—CaO, suggesting the multistage injection of different components by mantle fluid. Text Yakutia MDPI Open Access Publishing Minerals 11 6 615 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
kelyphite rim megacrystalline peridotite sheared peridotite high-alumina pyroxene metasomatism |
spellingShingle |
kelyphite rim megacrystalline peridotite sheared peridotite high-alumina pyroxene metasomatism Lyudmila Pokhilenko Kelyphite Rims on Garnets of Contrast Parageneses in Mantle Xenoliths from the Udachnaya-East Kimberlite Pipe (Yakutia) |
topic_facet |
kelyphite rim megacrystalline peridotite sheared peridotite high-alumina pyroxene metasomatism |
description |
A new classification of kelyphitic rims on garnets from xenoliths of peridotitic and eclogitic parageneses of the mantle section under the Udachnaya-East kimberlite pipe (Yakutia) is presented. Five types of rims are identified: Rim1 develops between garnet and olivine/pyroxene (or rim2) and is composed of high-alumina pyroxenes, spinel, phlogopite; rim2, the coarse grain part of rim1, is located between rim1 and olivine/pyroxene, and mainly consists of phlogopite and less aluminous larger pyroxenes and spinel; rim3 develops between garnet and kimberlite, and presents with phlogopite and Fe-Ti spinel; rim4 sometimes presents instead of rim1/rim2 and consists of zoned high-Cr phlogopite with rare fine grains of chromium spinel; rim5, a “pocket” between garnet and rim1, is represented by microcrystalline aggregates of clinopyroxene, mica, spinel, calcite, and feldspar in different variations. Rims 1, 2, and 3 are typical for garnets of all studied parageneses. Rims 4 and 5 develop on high-Cr subcalcic garnets of the most depleted peridotites. Reactions of the formation of all types of rims are given in the article. Each type of kelyphite demonstrates a clear enrichment with a certain component: Rim1—MgO and alkalis; rim2—TiO2; rim3—FeO and TiO2; rim4—Cr2O3; and rim5—CaO, suggesting the multistage injection of different components by mantle fluid. |
format |
Text |
author |
Lyudmila Pokhilenko |
author_facet |
Lyudmila Pokhilenko |
author_sort |
Lyudmila Pokhilenko |
title |
Kelyphite Rims on Garnets of Contrast Parageneses in Mantle Xenoliths from the Udachnaya-East Kimberlite Pipe (Yakutia) |
title_short |
Kelyphite Rims on Garnets of Contrast Parageneses in Mantle Xenoliths from the Udachnaya-East Kimberlite Pipe (Yakutia) |
title_full |
Kelyphite Rims on Garnets of Contrast Parageneses in Mantle Xenoliths from the Udachnaya-East Kimberlite Pipe (Yakutia) |
title_fullStr |
Kelyphite Rims on Garnets of Contrast Parageneses in Mantle Xenoliths from the Udachnaya-East Kimberlite Pipe (Yakutia) |
title_full_unstemmed |
Kelyphite Rims on Garnets of Contrast Parageneses in Mantle Xenoliths from the Udachnaya-East Kimberlite Pipe (Yakutia) |
title_sort |
kelyphite rims on garnets of contrast parageneses in mantle xenoliths from the udachnaya-east kimberlite pipe (yakutia) |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/min11060615 |
op_coverage |
agris |
genre |
Yakutia |
genre_facet |
Yakutia |
op_source |
Minerals; Volume 11; Issue 6; Pages: 615 |
op_relation |
https://dx.doi.org/10.3390/min11060615 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/min11060615 |
container_title |
Minerals |
container_volume |
11 |
container_issue |
6 |
container_start_page |
615 |
_version_ |
1774724454232883200 |