Compressibility of carbonophosphate bradleyite Na3Mg(CO3)(PO4) by X-ray diffraction and Raman spectroscopy

Gao, Jing; Huang, Weifeng; Wu, Xiang; Fan, Dongrui; Zhang, Wu; Xia, Dingguo; Qin, Shan

doi:10.1007/s00269-014-0710-0

Cited by 18 publications

(14 citation statements)

References 53 publications

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“…Bradleyite Na 3 Mg(PO 4 )(CO 3 ) ( Fig. 4I) was identified by two strong bands at 971 and 1078 cm -1 and two medium bands at 218 and 591 cm -1 in its Raman spectra (Gao et al, 2015).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Alkali-carbonate melts from the base of cratonic lithospheric mantle: Links to kimberlites

et al. 2018

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We studied melt inclusions in olivine of sheared peridotite xenoliths from kimberlites These xenoliths are derived from 180-230 km and are among the deepest mantle rocks Alkali-rich carbonates, halides, sulphates and aragonite were found in melt inclusions Melt inclusions are snapshots Cl-S-alkali-rich carbonate melt originated at > 230 km The high-pressure melt inclusions may represent near primary kimberlite melt

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“…Bradleyite Na 3 Mg(PO 4 )(CO 3 ) ( Fig. 4I) was identified by two strong bands at 971 and 1078 cm -1 and two medium bands at 218 and 591 cm -1 in its Raman spectra (Gao et al, 2015).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Alkali-carbonate melts from the base of cratonic lithospheric mantle: Links to kimberlites

et al. 2018

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“…On the other hand, the three compounds have bulk moduli comparable to those of the most compressible phosphates in nature. This can be seen in Table where we compare KCaPO 4 , K 2 Ce(PO 4 ) 2 , and KSrPO 4 with previously studied phosphates. − Only berlinite-type AlPO 4 and FePO 4 and SbPO 4 are more compressible than the phosphates that we have studied here. Berlinite-type phosphates are more compressible because berlinite is a low-density and open structure which consists of alternating AlO 4 (FeO 4 ) and PO 4 tetrahedra linked with vertices and thus can easily accommodate compression.…”

Section: Discussionmentioning

confidence: 56%

Equations of State and Crystal Structures of KCaPO₄, KSrPO₄, and K₂Ce(PO₄)₂ under High Pressure: Discovery of a New Polymorph of KCaPO₄

Errandonea

Achary

Díaz-Anichtchenko

et al. 2023

Crystal Growth & Design

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We have studied by means of angle-dispersive powder synchrotron X-ray diffraction the structural behavior of KCaPO 4 , SrKPO 4 , and K 2 Ce(PO 4 ) 2 under high pressure up to 26, 25, and 22 GPa, respectively. For KCaPO 4 , we have also accurately determined the crystal structure under ambient conditions, which differs from the structure previously reported. Arguments supporting our structural determination will be discussed. We have found that KCaPO 4 undergoes a reversible phase transition. The onset of the transition is at 5.6 GPa. It involves a symmetry decrease. The low-pressure phase is described by space group P3̅ m1 and the high-pressure phase by space group Pnma. For KSrPO 4 and K 2 Ce(PO 4 ) 2 , no evidence of phase transitions has been found up to the highest pressure covered by the experiments. For the three compounds, the linear compressibility for the different crystallographic axes and the pressure−volume equation of states are reported and compared with those of other phosphates. The three studied compounds are among the most compressible phosphates. The results of the study improve the knowledge about the high-pressure behavior of complex phosphates.

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“… Note : (1) Edwards et al [ 57 ] ; (2) RRUFF R110214; (3) Sharygin et al [ 17 ] ; (4) Shatskiy et al [ 58 ] ; (5) White [ 59 ] ; (6) Golovin et al [ 60 ] ; (7) Buzgar and Apopei, [ 61 ] ; (8) Abersteiner et al, under review; (9) RRUFF R060156; (10) Gao et al [ 62 ] ; (11) RRUFF R060112; (12) Korsakov et al [ 15 ] ; (13) Jentzsch et al [ 63 ] ; (14) RRUFF R070322; (15) RRUFF R040178; (16) RRUFF R050651; (17) RRUFF R060180; (18) Golovin et al [ 5 ] ; (19) D'Ippolito et al [ 64 ] …”

Section: Resultsmentioning

confidence: 99%

“…(2) RRUFF R110214; (3) Sharygin et al [17] ; (4) Shatskiy et al [58] ; (5) White [59] ; (6) Golovin et al [60] ; (7) Buzgar and Apopei, [61] ; (8) Abersteiner et al, under review; (9) RRUFF R060156; (10) Gao et al [62] ; (11) RRUFF R060112; (12) Korsakov et al [15] ; (13) Jentzsch et al [63] ; (14) ; (19) D'Ippolito et al [64] Abbreviations: m, medium intensity; s, strong intensity; w, weak intensity.…”

Section: Mineralmentioning

confidence: 99%

Confocal Raman spectroscopic study of melt inclusions in olivine of mantle xenoliths from the Bultfontein kimberlite pipe (Kimberley cluster, South Africa): Evidence for alkali‐rich carbonate melt in the mantle beneath Kaapvaal Craton

Sharygin

Golovin

Tarasov

et al. 2021

J Raman Spectroscopy

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Identifying the composition of primary/primitive mantle melts is crucial for understanding the mantle's evolution and mantle‐derived magmatism. Melt inclusions in mantle xenoliths provide key information about such melts. This study used confocal Raman spectroscopy to characterize mineral assemblage of unexposed crystallized secondary melt inclusions in the olivine from the xenoliths of the sheared garnet peridotites from the Bultfontein kimberlite pipe (Kimberley cluster, Kaapvaal Craton, South Africa). The studied peridotites originated from 112‐ to 146‐km mantle depths. In total, 16 minerals were identified among daughter crysatls, which include carbonates (calcite, magnesite, dolomite), alkali carbonates (eitelite, nyerereite, gregoryite/natrite, K–Na–Ca–carbonate (K,Na)2Ca(CO3)2 (K analogue of nyerereite), alkali carbonates with additional anions (northupite, bradleyite, burkeite), alkali sulfates (glauberite, thenardite, aphthitalite), apatite, tetraferriphlogopite, and magnetite. Several more daughter minerals gave distinct Raman spectra, but they were not determined due to the lack of similar spectra in the databases. Carbonates are predominant among the daughter minerals in the melt inclusions. Many daughter minerals are rich in alkalis. These facts indicate that melt(s), parental for the inclusions, is alkali‐rich carbonate in composition. Two possible models were suggested for the origin of these melt inclusions: (1) in situ fracturing of olivine and the mantle melt infiltration shortly before the sheared peridotites were entrained by the ascending kimberlitic magma; (2) infiltration of the transporting kimberlite melt into xenoliths during ascent. Both models imply that the alkali‐rich carbonate melt(s) that interacted with peridotites originated at a greater depth than the entrapment level of studied xenoliths (>150 km), that is, at the base of the lithosphere or in the asthenosphere. This melt is genetically related to the kimberlite magmatism that formed the Bultfontein pipe and points at the alkali‐rich carbonate composition of primary kimberlite melt.

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Compressibility of carbonophosphate bradleyite Na3Mg(CO3)(PO4) by X-ray diffraction and Raman spectroscopy

Cited by 18 publications

References 53 publications

Alkali-carbonate melts from the base of cratonic lithospheric mantle: Links to kimberlites

Alkali-carbonate melts from the base of cratonic lithospheric mantle: Links to kimberlites

Equations of State and Crystal Structures of KCaPO₄, KSrPO₄, and K₂Ce(PO₄)₂ under High Pressure: Discovery of a New Polymorph of KCaPO₄

Confocal Raman spectroscopic study of melt inclusions in olivine of mantle xenoliths from the Bultfontein kimberlite pipe (Kimberley cluster, South Africa): Evidence for alkali‐rich carbonate melt in the mantle beneath Kaapvaal Craton

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Compressibility of carbonophosphate bradleyite Na3Mg(CO3)(PO4) by X-ray diffraction and Raman spectroscopy

Cited by 18 publications

References 53 publications

Alkali-carbonate melts from the base of cratonic lithospheric mantle: Links to kimberlites

Alkali-carbonate melts from the base of cratonic lithospheric mantle: Links to kimberlites

Equations of State and Crystal Structures of KCaPO4, KSrPO4, and K2Ce(PO4)2 under High Pressure: Discovery of a New Polymorph of KCaPO4

Confocal Raman spectroscopic study of melt inclusions in olivine of mantle xenoliths from the Bultfontein kimberlite pipe (Kimberley cluster, South Africa): Evidence for alkali‐rich carbonate melt in the mantle beneath Kaapvaal Craton

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Equations of State and Crystal Structures of KCaPO₄, KSrPO₄, and K₂Ce(PO₄)₂ under High Pressure: Discovery of a New Polymorph of KCaPO₄