2019
DOI: 10.1016/j.gsf.2018.12.006
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Phlogopite in mantle xenoliths and kimberlite from the Grib pipe, Arkhangelsk province, Russia: Evidence for multi-stage mantle metasomatism and origin of phlogopite in kimberlite

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Cited by 36 publications
(18 citation statements)
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“…As a result, new clinopyroxene and Cr-bearing spinel form consistently with petrographic observations in the series of metasomatized xenoliths [46]. However, in some cases, new clinopyroxene does not form during garnet decomposition to phlogopite [44,47]. The pseudosection in Figure 2b demonstrates that such cases would correspond to lower log(a H 2 O ) and log(a K 2 O ) values.…”
Section: Reactions In Peridotitessupporting
confidence: 70%
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“…As a result, new clinopyroxene and Cr-bearing spinel form consistently with petrographic observations in the series of metasomatized xenoliths [46]. However, in some cases, new clinopyroxene does not form during garnet decomposition to phlogopite [44,47]. The pseudosection in Figure 2b demonstrates that such cases would correspond to lower log(a H 2 O ) and log(a K 2 O ) values.…”
Section: Reactions In Peridotitessupporting
confidence: 70%
“…Phlogopite extensively forms in mantle peridotites transforming initial harzburgites and lherzolites to phlogopite wehrlites both in garnet and spinel-facies [37][38][39][40][41][42][43][44][45][46][47]. Xenoliths of metasomatized peridotite show various specific textures indicating major reactions forming phlogopite via interaction of the rocks with potassic fluids and melts (Figure 1a Kushiro and Aoki [49] and Aoki [50] firstly proposed the reaction:…”
Section: Reactions In Peridotitesmentioning
confidence: 99%
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“…Campos de b) a f): xenólitos de granada peridotito metassomatizados (M); matriz kimberlítica (K) e xenólitos mantélicos alto Ti-Cr (Hti) de Giuliani et al (2016). Campos pontilhados de distintas populações de flogopitas kimberlíticas (Kargin et al, 2019). (Nixon 1987;Mitchell, 1986).…”
Section: Olivinaunclassified
“…Tais macrocristais seguem dois principais trends de evolução: primário (envolvendo altas concentrações de Ba, Al, Ti, Nb e Sr, apresentando decréscimo de Mg em direção às bordas) e transicional (macrocristais da matriz), envolvendo o aumento da componente kinoshitalita e decréscimo dos teores de Fe, Ti e Cr. Os elementos Rb, Ba e V são predominantes de substituição em micas octaédricas, porém, não podem ser utilizados como indicador petrogenético pela sobreposição de valores que tais elementos apresentam em relação as micas de carbonatitos(Kargin et al, 2019). indicaria a ocorrência de mudanças abruptas nas condições de oxirredução durante a cristalização Shee (1985).…”
unclassified