High-pressure and high-temperature structure and equation of state of Na<sub>3</sub>Ca<sub>2</sub>La (CO<sub>3</sub>)<sub>5</sub> burbankite

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Abstract 3 Ca2 La (CO3) 5 V 0 =  593.22 (3) Å3 and KT 0 =  69.8 (4) GPa. The thermal expansion coefficients of a Berman-type EoS are α 0 =  6.0 (2) × 10 - 5  K- 1 α 1 =  5.7 (7) × 10 - 8  K- 2 V 0 =  591.95 (8) Å3. The thermoelastic parameters determined in this study allow us to estimate the larger density of burbankite in the pressure-temperature range of 5.5–6 GPa and 1173–1273 K, with respect to the density of carbonatitic magmas at the same conditions. For this reason, we suggest that burbankite might fractionate from the magma and play a key role as an upper-mantle reservoir of light trivalent rare earth elements (REE3 +).

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
High-pressure and high-temperature structure and equation of state of Na3Ca2La (CO3)5 burbankite ; volume:34 ; number:3 ; year:2022 ; pages:351-358 ; extent:8
European journal of mineralogy ; 34, Heft 3 (2022), 351-358 (gesamt 8)

Urheber
Milani, Sula
Spartà, Deborah
Fumagalli, Patrizia
Joseph, Boby
Borghes, Roberto
Chenda, Valentina
Maurice, Juliette
Bais, Giorgio
Merlini, Marco

DOI
10.5194/ejm-34-351-2022
URN
urn:nbn:de:101:1-2022061605213665381419
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:24 MESZ

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Beteiligte

  • Milani, Sula
  • Spartà, Deborah
  • Fumagalli, Patrizia
  • Joseph, Boby
  • Borghes, Roberto
  • Chenda, Valentina
  • Maurice, Juliette
  • Bais, Giorgio
  • Merlini, Marco

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