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| Home > Publications database > Correction to: Allanite at high pressure: effect of REE on the elastic behaviour of epidote-group minerals |
| Journal Article | PUBDB-2020-00150 |
; ; ; ; ; ;
2019
Springer
Heidelberg
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Please use a persistent id in citations: doi:10.1007/s00269-019-01053-x
Abstract: The compressional behaviour of a natural allanite from Lago della Vecchia (upper Cervo valley, Italy) metagranitoids[$^{A1}$(Ca$_{0.69}$Fe$^{2+}$$_{0.31}$)$_{Σ1.00}^{A2}$(Ca$_{0.46}$Ce$_{0.24}$La$_{0.12}$Sm$_{0.02}$Pr$_{0.05}$Nd$_{0.09}$Th$_{0.02}$)$_{Σ1.00}^{M1}$(Al$_{0.65}$Fe$^{3+}$$_{0.34}$Ti$_{0.02}$)$_{Σ1.01}^{M2}$(Al$_{0.99}$)$^{M3}$(Fe$^{3+}_{0.54}$Fe$^{2+}_{0.36}$Mg$_{0.06}$Ti$^{4+}_{0.02}$Al$_{0.01}$)$_{Σ0.99}$ $^{Si1,Si2,Si3}$(Si$_{2.80}$Al$_{0.20}$)$_{Σ3.00}O_{11}$(OH,O)] has been investigated up to 16 GPa (at 298 K) by means of in situsynchrotron single-crystal X-ray diffraction. Experiments have been conducted under hydrostatic conditions, using a diamondanvil cell and the mix methanol:ethanol:water = 16:3:1 (up to 10 GPa) and neon (up to 16 GPa) as pressure-transmittingmedia. No phase transition has been observed within the pressure-range investigated. Data collected in decompression provethat, at least up to 16 GPa (at 298 K), the deformation mechanisms are fully reversible. A third-order Birch–MurnaghanEquation of State (BM-EoS) was fitted to the P–V data (up to 10 GPa), giving: V$_0$ = 470.2(2) Å$^3$, K$_{P0,T0}$ = 131(4) GPa andK′= 1.9(8). The evolution of the lattice parameters with pressure shows a slight anisotropic compression pattern, with K$_{P0,T0}$(a):K$_{P0,T0}$(b):K$_{P0,T0}$(c) = 1.24:1.52:1. The monoclinic β-angle decreases monotonically with pressure, with: $β_{P}(°)$ = $β_{P0}$ – 0.0902(4)P (R$^2$ = 0.997, with P in GPa). The main deformation mechanisms at the atomic scale are described basedon a series of structure refinements at different pressures. A comparison between the compressional behavior of allanite,epidote and clinozoisite is carried out.
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Journal Article
Allanite at high pressure: effect of REE on the elastic behaviour of epidote-group minerals
Physics and chemistry of minerals 46(8), 783 - 793 (2019) [10.1007/s00269-019-01039-9]
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