Physics and Chemistry of Minerals最新文献

{"title":"Electron probe studies of solid radioactive waste from a uranium production tailings storage facility","authors":"S. Yu. Skripchenko,&nbsp;K. A. Nalivaiko,&nbsp;S. M. Titova","doi":"10.1007/s00269-026-01375-7","DOIUrl":"10.1007/s00269-026-01375-7","url":null,"abstract":"<div><p>Using high-precision scanning electron microscopy and energy dispersive X-ray spectroscopy, this study comprehensively investigated highly heterogeneous solid radioactive wastes stored within a near-surface tailings facility at Chepetsky Mechanical Plant JSC. Surface screening and micro-chemical mapping were systematically performed on representative specimens to determine the composition of the sludge matrices and individual inclusions. Fine particles with chemical compositions consistent with gypsum, calcium carbonate, uranium oxides, ammonium uranyl carbonate, pyrolusite, barium sulfate, iron, silicon, zirconium, and lead oxides were successfully identified. The analysis provided direct mineralogical confirmation of the presence of insoluble residues originating from historical uranium ore leaching and enrichment operations. Crucially, the scientific novelty of this work lies in establishing that uranium is ubiquitously distributed across the waste surfaces and is primarily fixed within the calcium-bearing matrix phases (CaSO₄·2H₂O, CaCO₃ and CaF₂) via an adsorption–coprecipitation mechanism, while also forming discrete micro-scale ammonium uranyl carbonate and oxide inclusions up to 2.5 µm that bypass bulk detection. The integrated SEM–EDS approach proved to be a powerful tool for micro-chemical characterization, effectively complementing conventional bulk X-ray diffraction and chemical analyses. These insights into uranium speciation provide an essential scientific foundation for developing efficient hydrometallurgical processing and environmental remediation technologies for complex industrial tailing facilities.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Compressibility and structural compression mechanism of Mg2Cr2O5 to 45.5 GPa","authors":"Ze Yuan,&nbsp;Shuyu Jin,&nbsp;Yungui Liu,&nbsp;Yanfei Zhang,&nbsp;Xiang Wu","doi":"10.1007/s00269-026-01373-9","DOIUrl":"10.1007/s00269-026-01373-9","url":null,"abstract":"<div><p>A high-quality single crystal of Mg₂Cr₂O₅ was synthesized at 16 GPa and 2000 K using multi-anvil techniques. Its crystal structure and high-pressure behavior were investigated up to 45.5 GPa by means of single-crystal synchrotron X-ray diffraction combined with a diamond anvil cell. Lattice parameters and atomic positions were determined under various pressure conditions. The pressure-volume relationship is well described by a second-order Birch-Murnaghan equation of state, yielding an isothermal bulk modulus <i>K</i>_<i>0</i> = 227(3) GPa. Detailed crystal structure analysis reveals that the compression mechanism is primarily governed by polyhedral tilting.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural evolution of Li/Fe³⁺-doped forsterite (Mg2−2xLixFe³⁺xSiO₄) and the crystal-chemical viability of the LiFeSiO₄ olivine","authors":"Paolo Ballirano,&nbsp;Andrea Bloise,&nbsp;Giorgia Confalonieri,&nbsp;Giulia Belliconi,&nbsp;Ferdinando Bosi","doi":"10.1007/s00269-026-01372-w","DOIUrl":"10.1007/s00269-026-01372-w","url":null,"abstract":"<div><p>The structural evolution of forsterite (Mg₂SiO₄) upon heterovalent coupled substitution with Li⁺ and Fe³⁺, forming the solid solution Mg_(2-2x)Li_xFe³⁺_xSiO₄, has been investigated up to ≈ 0.30. Single crystals were synthesized via high-temperature flux growth and characterized by single-crystal X-ray diffraction. Crystal structure refinements confirm a 2Mg²⁺ = Li⁺ + Fe³⁺ substitution, where Li⁺ occupies the smaller, less distorted <i>M</i>1 octahedron, while Fe³⁺ occupies the larger <i>M</i>2 octahedron, in agreement with charge-balance and bond-valence constraints. This substitution induces a linear contraction of the unit-cell volume, driven primarily by a decrease in the <i>c</i>-parameter, while concurrently causing a systematic expansion of the <i>M</i>1 octahedron and a contraction of the <i>M</i>2 octahedron. All measured structural parameters— such as mean bond distances, polyhedral volumes, and distortion indices—vary linearly with composition, indicating a continuous virtual solid solution up to <i>x</i> = 1.00. Extrapolation of the trends and subsequent Distance Least-Squares modelling predict a structurally viable atomic arrangement for the hypothetical LiFe³⁺SiO₄ endmember, which is crystal-chemically feasible as well as comparable to the known LiScSiO₄ olivine-type structure. These findings address conflicting literature reports by demonstrating that the olivine structure can accommodate the complete Li⁺ + Fe³⁺ ↔ 2Mg²⁺ substitution, thereby supporting the potential of LiFeSiO₄-type compounds as candidate cathode materials for lithium-ion batteries.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00269-026-01372-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-temperature Raman spectroscopy of lawsonite: constraints on bonding changes and dehydration","authors":"Connor A. Perkins,&nbsp;Quentin Williams","doi":"10.1007/s00269-026-01370-y","DOIUrl":"10.1007/s00269-026-01370-y","url":null,"abstract":"<div><p>The Raman spectrum of lawsonite is characterized in situ at high temperatures through its dehydration temperature under vacuum. The structural reorganization associated with dehydration appears to initiate in the Si and Al-dominated layer of the structure, and proceeds between 525–550 and 725 °C. The loss of water from the structure appears complex, with the first structural reorganization associated with dehydration occurring at 550 °C, coexistence of lawsonite and the initial dehydration products up to 700 °C, and rapid disappearance of lawsonite between 675 and 725 °C. The dehydration is likely preceded by increased disorder of the hydroxyls within the structure. Indications of enhanced disorder of hydrogen ions at high temperatures include a dramatic decrease in intensity of an O–H librational vibration, large peak broadening of the principal hydroxyl stretch, and the disappearance of a shoulder on the strongest hydroxyl stretching vibration. The thermal anharmonicity of a range of Raman active modes is determined, and a revision to mode assignments is suggested based on the thermal shifts. Under low pressure conditions and our laboratory timescale, the observed product of lawsonite dehydration is the metastable pseudo-hexagonal polymorph of CaAl₂Si₂O₈, dmisteinbergite. Production of dmisteinbergite through intermediate temperature lawsonite dehydration represents a previously unrecognized pathway for its formation, which previously has been limited to low-temperature hydrothermal environments, pyrometamorphic environments, materials rapidly quenching from melts (including in pseudotachylites), and as a retrograde phase from high grade metamorphic environments. The formation of metastable dmisteinbergite from lawsonite is likely facilitated by a topotactic relation between its layered structure and that of lawsonite.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00269-026-01370-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enrichment factor (EF) of REEs in soil fractions of different grain sizes: Malatya–Kuluncak, Başören Village","authors":"Güllü Kirat,&nbsp;Özlem Erdem","doi":"10.1007/s00269-026-01362-y","DOIUrl":"10.1007/s00269-026-01362-y","url":null,"abstract":"<div><p>This study investigated the enrichment factor (EF) and geochemical relationships of rare earth elements (REEs) in different grain size fractions of soils collected from Başören village, Kuluncak district, Malatya province, Türkiye. A total of 22 surface soil samples were collected and separated into five grain size fractions (&lt; 75, 75–150, 150–180, 180–250, and &gt; 250 μm), yielding 110 samples. Concentrations of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Lu, and Y were determined by ICP-MS. EF values ​​were calculated using Al as the reference element, and Pearson correlation was applied to evaluate the relationships between REEs. Strong positive correlations were observed among most REEs (r = 0.999–1.000, p &lt; 0.01), whereas weaker correlations were shown between Eu and Gd elements and La, Ce, Pr, Nd, Sm, Tb, Dy, Ho, Yb, Lu, and Y elements. Moderately positive relationships were determined between Al and REEs, with coefficients of determination (R²) ranging from approximately 0.33 to 0.54, indicating that REE distributions are primarily controlled by aluminosilicate minerals and fine-grained fractions. EF values ​​varied between sampling areas and grain size fractions. While negligible to moderate enrichment was observed in most samples, significant to very high enrichment was observed in some samples, particularly for Gd, Tb, Dy, Ho, and Yb. Samples T16 and T20 showed the highest enrichment levels, with Gd reaching very high enrichment classes (EF = 20–40). The results show that the spatial distribution and enrichment patterns of rare earth elements are largely influenced by lithogenic sources and grain size-dependent mineralogical characteristics.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural features and spectroscopy study of H-bearing arctite, BaCa7Na5(PO4)6F3, from the Khibiny alkaline massif, Kola Peninsula","authors":"G. S. Ilyin,&nbsp;E. A. Pankrushina,&nbsp;D. V. Deyneko,&nbsp;N. V. Chukanov,&nbsp;D. A. Mandrygina,&nbsp;S. A. Vozchikova,&nbsp;S. M. Aksenov","doi":"10.1007/s00269-026-01367-7","DOIUrl":"10.1007/s00269-026-01367-7","url":null,"abstract":"<div><p>The crystal structure, infrared, Raman, excitation- and emission-mode photoluminescence spectra as well as thermal behavior of hydrogen- and <i>REE</i>-bearing natural arctite have been studied. The trigonal unit cell parameters are: <i>a</i> = 7.0773(1), <i>c</i> = 41.2197(6) Å, <i>V</i> = 1788.01(4) ų; sp. gr. <i>R</i><span>(:stackrel{-}{3})</span><i>m</i>. The crystal structure was solved and refined to the final <i>R</i> = 2.02% based on 848 <i>I</i> &gt; 3σ(I). Taking into account the IR spectroscopy data, the charge-balanced empirical formula calculated for 6 phosphorus atoms is (<i>Z</i> = 3): (H⁺,H₃O⁺)_0.88(Ca_6.62Na_4.40Ba_1.00Ce_0.07La_0.03)_Σ12.12(PO₄)_5.82(HPO₄)_0.18F_2.85(OH)_0.15. The crystal structure of arctite is characterized by the presence of anion-centered [F₃<i>M</i>₁₂] trimers (<i>M</i> = Na, Ca) composed of face-shared anion-centered F<i>M</i>₆ octahedra. The simultaneous presence of basic (Ca²⁺···OH^–) and acid (HPO₄^2–, H₃O⁺, H⁺) species is a specific feature of the studied H-bearing sample. Similar synthetic materials may be of practical interest as luminophores. Luminescent properties of the studied sample are related to the admixed Ce³⁺ and Sm³⁺ ions.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148903529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Capture of lanthanum atoms by the (111) twin boundary in fluorite: a DFT study","authors":"Ekaterina Y. Kotelevskaya,&nbsp;Boris B. Shkurskii,&nbsp;Elena A. Volkova,&nbsp;Vasilii O. Krivchuk,&nbsp;Daniil O. Poletaev,&nbsp;Artem R. Oganov","doi":"10.1007/s00269-026-01366-8","DOIUrl":"10.1007/s00269-026-01366-8","url":null,"abstract":"<div><p>Ab initio calculations were performed to estimate the energy preference of Ca²⁺ substitution by La³⁺ with compensating incorporation of an additional F⁻ ion at the (111) twin boundary of fluorite (CaF₂). Model structures of polytypes and polysomes, which are periodic stacking faults within the cubic fluorite matrix, were constructed and optimized using density functional theory (DFT). Our results indicate that the twin boundary has a strong tendency to trap lanthanum cations. These findings suggest that the twin boundaries in CaF₂ may act as active sites for the accumulation of rare-earth elements, providing potential routes for modifying the functional properties of the materials. Conversely, addition of lanthanoids may promote growth twinning of fluorite.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"53 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-temperature behavior of FeTiO3 and MgTiO3: in-situ synchrotron X-ray diffraction study","authors":"Kai Wang,&nbsp;Jingui Xu,&nbsp;Shijie Huang,&nbsp;Shanrong Zhang,&nbsp;Qifa Zhong,&nbsp;Wei Zhao,&nbsp;Dawei Fan","doi":"10.1007/s00269-026-01365-9","DOIUrl":"10.1007/s00269-026-01365-9","url":null,"abstract":"<div><p>The high-temperature volumetric and axial thermal expansion behaviors of ilmenite (FeTiO₃) and geikielite (MgTiO₃) were examined up to 773 K using in situ synchrotron X-ray diffraction. No phase transitions were observed within the experimental temperature range. The temperature–volume data were fitted using the Berman (1988)’s equation, yielding <i>V</i>₀ = 316.50(3) ų and <i>α</i>_<i>V</i>0 = 3.73(4) × 10^–5 K⁻¹ for FeTiO₃, and <i>V</i>₀ = 308.20(1) ų and <i>α</i>_<i>V</i>0 = 2.95(9) × 10^–5 K⁻¹ for MgTiO₃. In addition, axial thermal expansion analysis showed that FeTiO₃ has <i>a</i>₀ = 5.0865(1) Å, <i>α</i>_<i>a</i>0 = 1.41(1) × 10^–5 K⁻¹, <i>c</i>₀ = 14.0858(4) Å, and <i>α</i>_<i>c</i>0 = 0.92(2) × 10^–5 K⁻¹, while MgTiO₃ has <i>a</i>₀ = 5.0585(1) Å, <i>α</i>_<i>a</i>0 = 0.85(3) × 10^–5 K⁻¹, <i>c</i>₀ = 13.9084(4) Å, and <i>α</i>_<i>c</i>0 = 1.23(3) × 10^–5 K⁻¹. The results demonstrate that FeTiO₃ exhibits more stable volumetric expansion with increasing temperature than MgTiO_3. However, FeTiO₃ and MgTiO₃ display opposite trends in axial expansion: the <i>a</i>-axis expands more than the <i>c</i>-axis in FeTiO₃ (<i>α</i>_<i>a</i>0/<i>α</i>_<i>c</i>0 = 1.53), whereas in MgTiO₃, the <i>c</i>-axis expands more (<i>α</i>_<i>a</i>0/<i>α</i>_<i>c</i>0 = 0.69). These differences mainly reflect the distinct nature of the A-site cations: the 3d electrons of Fe²⁺ affect the rigidity and thermal response of Fe–O and Ti–O bonds, while Fe-related magnetic exchange interactions and associated magnetoelastic coupling may further constrain Fe–O bond expansion and reduce the thermal expansion of FeTiO₃.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"53 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148751940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of strontium hexaferrite prepared by solid state reaction using celestite and hematite","authors":"J. B. Neto,&nbsp;C. H. N. Cordeiro,&nbsp;M. M. de Góis,&nbsp;J. Xavier,&nbsp;J. M. Soares","doi":"10.1007/s00269-026-01364-w","DOIUrl":"10.1007/s00269-026-01364-w","url":null,"abstract":"<div><p>Strontium hexaferrite (SrM) powders were prepared by solid-state reaction using celestite and magnetite/hematite. Energy dispersive X-ray fluorescence spectrometry, X-ray diffractometry (XRD), scanning electron microscopy (SEM), and vibrating sample magnetometry were used for analyses. The precursor ores were purified by hand-sorting and magnetic separation. Magnetic separation yielded 75% magnetite and 25% hematite in iron ore. Strontium reached a single phase of <span>(rm SrSO_4)</span> via hand-sorting. XRD confirmed single-phase <span>(rm SrFe_{12}O_{19})</span> sample with hexagonal symmetry (space group <span>(rm P6_{3}/mmc)</span>). EDS analyse confirmed that the percentage of elements is in agreement with the expected stoichiometry for the hexaferrite phase. Initial SrM sample exhibited magnetization at maximum field of <span>(rm 56~emu/g)</span> and coercive field of <span>(rm 632~Oe)</span>. Although remanence and coercivity were lower than expected for the initial SrM sample, due to wide particle size distribution observed in SEM images, by optimizing synthesis parameters, particularly annealing at <span>(950^circ )</span>C, the coercivity increased by nearly eightfold, reaching 4.96 kOe. The sample annealed at 950 <span>(^circ )</span>C also exhibited a maximum energy product of <span>(rm (BH)_{max}approx 3.20~MGOe)</span> and an estimated magnetocrystalline anisotropy constant of <span>(rm K_1sim 3.6times 10^6~erg/cm^3)</span>. Microstructural evidence confirmed the predominance of particles in the monodomain regime, which justifies the increase in the coercive field. The results demonstrate that microstructural control is decisive for tuning the magnetic response of SrM, enabling the large-scale viability of this synthesis route for the production of high-coercivity hexaferrites, using a direct mixture of minerals instead of conventional industrial reagents.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"53 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00269-026-01364-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148751941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulating forsterite surfaces: localised chemistry and surface development under high temperatures","authors":"Joshua M. R. Muir,&nbsp;Yi Wang,&nbsp;Feiwu Zhang","doi":"10.1007/s00269-026-01359-7","DOIUrl":"10.1007/s00269-026-01359-7","url":null,"abstract":"<div><p>Grain boundaries are an important part of many polycrystalline mineral aggregates, possessing unique geometries and chemistries but they are often poorly understood due to the many complexities of studying such large geometrically diverse regions. In this work we shall examine the surfaces of the mineral forsterite in order to understand their controlling behaviour and mechanisms. We shall use a combination of density functional theory and both machine learning and classically trained forcefields. We find that for purposes of partitioning and surface energies most grain boundaries are similar to their constituent planar surfaces. Our main finding is that the relative energies of forsterite surfaces are highly sensitive to T and P and that their planar distributions are not static in real environments. Increasing T at low P can lead to growth of (010) surfaces while increasing T and P together can lead to the growth of (111) surfaces. In mantle conditions we predict a strong favourability of (111) surfaces that increases with depth but with large, sometimes non-monotonic shifts in the favourability of other surfaces. We also demonstrate that changing the surface distribution can lead to changes in crystal properties. The high temperature stabilisation of (010) is driven by a novel collective motion of Mg atoms along [100] channels which will also lead to a large, non-linear, anisotropic increase in grain boundary diffusion as (010) surfaces grow with temperature. We show that partitioning of water to forsterite surfaces is highly surface specific and driven by local chemistry enabling the possibility of hidden reservoirs in the Earth produced by changing surface plane distributions.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"53 3","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148613778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}