Coexisting silicate melt inclusions and H2O-bearing, CO2-rich fluid inclusions in mantle peridotite xenoliths from the Carpathian–Pannonian region (central Hungary)

Hidas, Károly; Guzmics, Tibor; Szabó, Csaba; Kovàcs, István; Bodnar, Robert J.; Zajacz, Zoltán; Nédli, Zsuzsanna; Vaccari, Lisa; Perucchi, A.

doi:10.1016/j.chemgeo.2010.03.004

Cited by 45 publications

(31 citation statements)

References 92 publications

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“…The characteristics of the Raman spectrum of water have been used to prove the presence of H 2 O in small CO 2 fluid inclusions (b5-10 μm in size; Frezzotti and Peccerillo, 2007;Frezzotti et al, 2010;Hidas et al, 2010). Here, a water film of a thickness of 0.2 μm wrapping the CO 2 fluid cannot be identified with optical techniques, although it may correspond to as much as 10-20 mol% of H 2 O.…”

Section: Aqueous Fluidsmentioning

confidence: 98%

Raman spectroscopy for fluid inclusion analysis

Frezzotti

Tecce

Casagli

2012

Journal of Geochemical Exploration

573

345

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Section: Aqueous Fluidsmentioning

confidence: 98%

Raman spectroscopy for fluid inclusion analysis

Frezzotti

Tecce

Casagli

2012

Journal of Geochemical Exploration

573

345

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“…%. Kerimasi afrikandite, Trig Point Hill, TanzaniaHidas et al 2010;Guzmics et al 2011). Crystals that have been precipitated prior to forming of melt inclusion could also be entrapped heterogeneously.…”

mentioning

confidence: 99%

Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma

Guzmics

Mitchell

Szabó

et al. 2012

Contrib Mineral Petrol

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The evolution of a carbonated nephelinitic magma can be followed by the study of a statistically significant number of melt inclusions, entrapped in coprecipitated perovskite, nepheline and magnetite in a clinopyroxene-and nepheline-rich rock (afrikandite) from Kerimasi volcano (Tanzania). Temperatures are estimated to be 1,100°C for the early stage of the melt evolution of the magma, which formed the rock. During evolution, the magma became enriched in CaO, depleted in SiO 2 and Al 2 O 3 , resulting in immiscibility at *1,050°C and crustal pressures (0.5-1 GPa) with the formation of three fluidsaturated melts: an alkali-and MgO-bearing, CaO-and FeO-rich silicate melt; an alkali-and F-bearing, CaO-and P 2 O 5 -rich carbonate melt; and a Cu-Fe sulfide melt. The sulfide and the carbonate melt could be physically separated from their silicate parent and form a Cu-Fe-S ore and a carbonatite rock. The separated carbonate melt could initially crystallize calciocarbonatite and ultimately become alkali rich in composition and similar to natrocarbonatite, demonstrating an evolution from nephelinite to natrocarbonatite through Ca-rich carbonatite magma. The distribution of major elements between perovskite-hosted coexisting immiscible silicate and carbonate melts shows strong partitioning of Ca, P and F relative to Fe T , Si, Al, Mn, Ti and Mg in the carbonate melt, suggesting that immiscibility occurred at crustal pressures and plays a significant role in explaining the dominance of calciocarbonatites (sövites) relative to dolomitic or sideritic carbonatites. Our data suggest that Cu-Fe-S compositions are characteristic of immiscible sulfide melts originating from the parental silicate melts of alkaline silicate-carbonatite complexes.

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“…4d'). (Roedder, 1984;Frezzotti and Peccerillo, 2007;Hidas et al, 2010;Berkesi et al, 2012). 현미경 관찰시 재평형되지 않은 유체포유물로 여기고 냉각/ 가열 실험이 수행되었지만 CO (Fig.…”

Section: 페리도타이트 포획암unclassified

Mantle-derived CO<sub>2</sub>-fluid Inclusions in Peridotite Xenoliths from the Alkali Basalt, Jeju Island, South Korea

Minyoung¹,

Woo²,

Park³

et al. 2016

The Journal of the Petrological Society of Korea

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), suggesting that most of the inclusions (originally trapped at mantle conditions) re-equilibrated to lower density values. Nevertheless, the highest density CO 2 in our fluid inclusions is consistent with entrapment of fluids at upper mantle pressures (and depths). The calculated trapping pressure from CO 2 -rich fluid inclusions that appear to be free from re-equilibrium, e.g., showing the lowest homogenization temperatures, is ≈0.9 GPa. Based on the petrographic evidences, the fluid entrapment can be regarded as a late stage event in the evolution of the shallow lithospheric mantle.

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Coexisting silicate melt inclusions and H2O-bearing, CO2-rich fluid inclusions in mantle peridotite xenoliths from the Carpathian–Pannonian region (central Hungary)

Cited by 45 publications

References 92 publications

Raman spectroscopy for fluid inclusion analysis

Raman spectroscopy for fluid inclusion analysis

Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma

Mantle-derived CO<sub>2</sub>-fluid Inclusions in Peridotite Xenoliths from the Alkali Basalt, Jeju Island, South Korea

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