The high-pressure behavior of a natural jadarite (ideally LiNaSiB3O7(OH), a∼6.76 Å, b∼13.80Å, c∼7.69 Å, β=124.09◦, space group P21/c) has been studied by in situ single-crystal and powder synchrotron X-ray diffraction up to 20 GPa, with a diamond anvil cell and using He as a hydrostatic pressure-transmitting fluid. Between 16.57(5) and 17.04(5) GPa, jadarite undergoes a first-order isosymmetric phase transition, which is reconstructive in character, with a ΔV of approximately -3%. The structure of the high-pressure polymorph was solved and refined (to R1 ∼ 4%). The isothermal bulk modulus of the low-P polymorph of jadarite is KV0 = 55.0(5) GPa (βV0 = 0.0182(2) GPa–1), and its P-derivative is 3.84(9). The compressional anisotropy, derived along the three main crystallographic directions, is modest, with βa0:βb0:βc0 = 1.23:1:1.23. The P-induced deformation mechanisms at the atomic scale, which lead to phase transition, are described.

High‐pressure behaviour and phase transition of jadarite, a promising B and Li mineral commodity / D. Comboni, T. Battiston, M.S. Rumsey, F. Pagliaro, P. Lotti, M. Hanfland, G.D. Gatta. - In: JOURNAL OF THE AMERICAN CERAMIC SOCIETY. - ISSN 0002-7820. - 105:11(2022 Nov), pp. 7011-7021. [10.1111/jace.18659]

High‐pressure behaviour and phase transition of jadarite, a promising B and Li mineral commodity

D. Comboni
Primo
Writing – Original Draft Preparation
;
T. Battiston;F. Pagliaro;P. Lotti
Writing – Review & Editing
;
G.D. Gatta
Ultimo
Writing – Review & Editing
2022

Abstract

The high-pressure behavior of a natural jadarite (ideally LiNaSiB3O7(OH), a∼6.76 Å, b∼13.80Å, c∼7.69 Å, β=124.09◦, space group P21/c) has been studied by in situ single-crystal and powder synchrotron X-ray diffraction up to 20 GPa, with a diamond anvil cell and using He as a hydrostatic pressure-transmitting fluid. Between 16.57(5) and 17.04(5) GPa, jadarite undergoes a first-order isosymmetric phase transition, which is reconstructive in character, with a ΔV of approximately -3%. The structure of the high-pressure polymorph was solved and refined (to R1 ∼ 4%). The isothermal bulk modulus of the low-P polymorph of jadarite is KV0 = 55.0(5) GPa (βV0 = 0.0182(2) GPa–1), and its P-derivative is 3.84(9). The compressional anisotropy, derived along the three main crystallographic directions, is modest, with βa0:βb0:βc0 = 1.23:1:1.23. The P-induced deformation mechanisms at the atomic scale, which lead to phase transition, are described.
borates, high pressure, jadarite, lithium and boron commodity, phase transition, X-ray diffraction
Settore GEO/09 - Georisorse Miner.Appl.Mineral.-Petrogr.per l'amb.e i Beni Cul
   Mineral Reactivity in Large-scale Processes (MiReLaP)
   MiReLaP
   MINISTERO DELL'ISTRUZIONE E DEL MERITO
   2017L83S77_003

   Piano di Sostegno alla Ricerca 2015-2017 - Linea 2 "Dotazione annuale per attività istituzionali" (anno 2020)
   UNIVERSITA' DEGLI STUDI DI MILANO
nov-2022
18-lug-2022
Article (author)
File in questo prodotto:
File Dimensione Formato  
Jadarite_JACS2022.pdf

accesso riservato

Descrizione: PDF Articolo Pubblicato
Tipologia: Publisher's version/PDF
Dimensione 1.35 MB
Formato Adobe PDF
1.35 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Jadarite_15-06-2022_R1.pdf

Open Access dal 19/07/2023

Tipologia: Post-print, accepted manuscript ecc. (versione accettata dall'editore)
Dimensione 672.64 kB
Formato Adobe PDF
672.64 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/935127
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 5
social impact