Metastable solubility and local structure of amorphous calcium carbonate (ACC)

Mergelsberg, Sebastian T.; Yoreo, James J. De; Miller, Quin R. S.; Michel, F. Marc; Ulrich, Richard K.; Dove, Patricia M.

doi:10.1016/j.gca.2020.06.030

Cited by 36 publications

(42 citation statements)

References 44 publications

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“…andBlue et al (2017) also concurred that MHC is a metastable intermediate between ACC and anhydrous Ca-carbonate phases such as calcite and aragonite. While all Mexican lakes plot below the solubity line of ACC as determined by,Mergelsberg et al (2020) noticed that ACC with a lower solubility exists. Overall, it is therefore possible that Mexican lakes plot close to the solubility line of such a less soluble ACC phase.…”

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confidence: 78%

Integrative analysis of the mineralogical and chemical composition of modern microbialites from ten Mexican lakes: What do we learn about their formation?

Zeyen

Benzerara

Beyssac

et al. 2021

Geochimica et Cosmochimica Acta

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confidence: 78%

Integrative analysis of the mineralogical and chemical composition of modern microbialites from ten Mexican lakes: What do we learn about their formation?

Zeyen

Benzerara

Beyssac

et al. 2021

Geochimica et Cosmochimica Acta

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“…Such deviations were also observed in biominerals formed by mollusks and coccolithophorids ( 120 , 161 , 168 – 170 ). One effect of the mineralization pathway by PA + IA, as opposed to IA alone, is the increase in incorporated minor and trace elements in CaCO 3 , as shown by in vitro experiments and in CaCO 3 biominerals ( 115 , 155 , 171 , 172 ).…”

Section: Isotope and Trace Element Support For An Integrated Model Of...mentioning

confidence: 96%

Biomineralization: Integrating mechanism and evolutionary history

et al. 2022

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Calcium carbonate (CaCO 3 ) biomineralizing organisms have played major roles in the history of life and the global carbon cycle during the past 541 Ma. Both marine diversification and mass extinctions reflect physiological responses to environmental changes through time. An integrated understanding of carbonate biomineralization is necessary to illuminate this evolutionary record and to understand how modern organisms will respond to 21st century global change. Biomineralization evolved independently but convergently across phyla, suggesting a unity of mechanism that transcends biological differences. In this review, we combine CaCO 3 skeleton formation mechanisms with constraints from evolutionary history, omics, and a meta-analysis of isotopic data to develop a plausible model for CaCO 3 biomineralization applicable to all phyla. The model provides a framework for understanding the environmental sensitivity of marine calcifiers, past mass extinctions, and resilience in 21st century acidifying oceans. Thus, it frames questions about the past, present, and future of CaCO 3 biomineralizing organisms.

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“… 11 − 14 While research specifically focused on the impact of solution stoichiometry on calcite growth rate, 15 − 23 the timing of two-dimensional (2D) nucleation was not tabulated. Investigations also aimed at the new formation, or nucleation, of amorphous CaCO 3 (ACC), 24 ACC nucleation pathways, 25 − 36 inhibition by additives, 37 − 46 and the morphology of the nucleated crystals. 27 He et al 47 and Stamatakis et al.…”

Section: Introductionmentioning

confidence: 99%

Controlling CaCO₃Particle Size with {Ca²⁺}:{CO₃^2–} Ratios in Aqueous Environments

Seepma

Ruiz‐Hernandez

Nehrke

et al. 2021

Crystal Growth & Design

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The effect of stoichiometry on the new formation and subsequent growth of CaCO 3 was investigated over a large range of solution stoichiometries (10 –4 < r aq < 10 4 , where r aq = {Ca 2+ }:{CO 3 2– }) at various, initially constant degrees of supersaturation (30 < Ω cal < 200, where Ω cal = {Ca 2+ }{CO 3 2– }/ K sp ), pH of 10.5 ± 0.27, and ambient temperature and pressure. At r aq = 1 and Ω cal < 150, dynamic light scattering (DLS) showed that ion adsorption onto nuclei (1–10 nm) was the dominant mechanism. At higher supersaturation levels, no continuum of particle sizes is observed with time, suggesting aggregation of prenucleation clusters into larger particles as the dominant growth mechanism. At r aq ≠ 1 (Ω cal = 100), prenucleation particles remained smaller than 10 nm for up to 15 h. Cross-polarized light in optical light microscopy was used to measure the time needed for new particle formation and growth to at least 20 μm. This precipitation time depends strongly and asymmetrically on r aq . Complementary molecular dynamics (MD) simulations confirm that r aq affects CaCO 3 nanoparticle formation substantially. At r aq = 1 and Ω cal ≫ 1000, the largest nanoparticle in the system had a 21–68% larger gyration radius after 20 ns of simulation time than in nonstoichiometric systems. Our results imply that, besides Ω cal , stoichiometry affects particle size, persistence, growth time, and ripening time toward micrometer-sized crystals. Our results may help us to improve the understanding, prediction, and formation of CaCO 3 in geological, industrial, and geo-engineering settings.

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Metastable solubility and local structure of amorphous calcium carbonate (ACC)

Cited by 36 publications

References 44 publications

Integrative analysis of the mineralogical and chemical composition of modern microbialites from ten Mexican lakes: What do we learn about their formation?

Integrative analysis of the mineralogical and chemical composition of modern microbialites from ten Mexican lakes: What do we learn about their formation?

Biomineralization: Integrating mechanism and evolutionary history

Controlling CaCO₃Particle Size with {Ca²⁺}:{CO₃^2–} Ratios in Aqueous Environments

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Metastable solubility and local structure of amorphous calcium carbonate (ACC)

Cited by 36 publications

References 44 publications

Integrative analysis of the mineralogical and chemical composition of modern microbialites from ten Mexican lakes: What do we learn about their formation?

Integrative analysis of the mineralogical and chemical composition of modern microbialites from ten Mexican lakes: What do we learn about their formation?

Biomineralization: Integrating mechanism and evolutionary history

Controlling CaCO3Particle Size with {Ca2+}:{CO32–} Ratios in Aqueous Environments

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Controlling CaCO₃Particle Size with {Ca²⁺}:{CO₃^2–} Ratios in Aqueous Environments