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Dissolution enables dolomite crystal growth near ambient conditions.

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Title: Dissolution enables dolomite crystal growth near ambient conditions.
Authors: Joonsoo Kim, Yuki Kimura, Puchala, Brian, Tomoya Yamazaki, Becker, Udo, Wenhao Sun
Source: Science (pre-March 2025). 11/24/2023, Vol. 382 Issue 6673, p915-920. 6p. 1 Color Photograph, 3 Diagrams.
Subjects: Crystal growth, Dolomite, Supersaturated solutions, Supersaturation, Transmission electron microscopy, Surface strains
Abstract: Crystals grow in supersaturated solutions. A mysterious counterexample is dolomite CaMg(CO3)2, a geologically abundant sedimentary mineral that does not readily grow at ambient conditions, not even under highly supersaturated solutions. Using atomistic simulations, we show that dolomite initially precipitates a cation-disordered surface, where high surface strains inhibit further crystal growth. However, mild undersaturation will preferentially dissolve these disordered regions, enabling increased order upon reprecipitation. Our simulations predict that frequent cycling of a solution between supersaturation and undersaturation can accelerate dolomite growth by up to seven orders of magnitude. We validated our theory with in situ liquid cell transmission electron microscopy, directly observing bulk dolomite growth after pulses of dissolution. This mechanism explains why modern dolomite is primarily found in natural environments with pH or salinity fluctuations. More generally, it reveals that the growth and ripening of defect-free crystals can be facilitated by deliberate periods of mild dissolution. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Dissolution enables dolomite crystal growth near ambient conditions.
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  Data: <searchLink fieldCode="AR" term="%22Joonsoo+Kim%22">Joonsoo Kim</searchLink><br /><searchLink fieldCode="AR" term="%22Yuki+Kimura%22">Yuki Kimura</searchLink><br /><searchLink fieldCode="AR" term="%22Puchala%2C+Brian%22">Puchala, Brian</searchLink><br /><searchLink fieldCode="AR" term="%22Tomoya+Yamazaki%22">Tomoya Yamazaki</searchLink><br /><searchLink fieldCode="AR" term="%22Becker%2C+Udo%22">Becker, Udo</searchLink><br /><searchLink fieldCode="AR" term="%22Wenhao+Sun%22">Wenhao Sun</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 11/24/2023, Vol. 382 Issue 6673, p915-920. 6p. 1 Color Photograph, 3 Diagrams.
– Name: Subject
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  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Crystal+growth%22">Crystal growth</searchLink><br /><searchLink fieldCode="DE" term="%22Dolomite%22">Dolomite</searchLink><br /><searchLink fieldCode="DE" term="%22Supersaturated+solutions%22">Supersaturated solutions</searchLink><br /><searchLink fieldCode="DE" term="%22Supersaturation%22">Supersaturation</searchLink><br /><searchLink fieldCode="DE" term="%22Transmission+electron+microscopy%22">Transmission electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+strains%22">Surface strains</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Crystals grow in supersaturated solutions. A mysterious counterexample is dolomite CaMg(CO3)2, a geologically abundant sedimentary mineral that does not readily grow at ambient conditions, not even under highly supersaturated solutions. Using atomistic simulations, we show that dolomite initially precipitates a cation-disordered surface, where high surface strains inhibit further crystal growth. However, mild undersaturation will preferentially dissolve these disordered regions, enabling increased order upon reprecipitation. Our simulations predict that frequent cycling of a solution between supersaturation and undersaturation can accelerate dolomite growth by up to seven orders of magnitude. We validated our theory with in situ liquid cell transmission electron microscopy, directly observing bulk dolomite growth after pulses of dissolution. This mechanism explains why modern dolomite is primarily found in natural environments with pH or salinity fluctuations. More generally, it reveals that the growth and ripening of defect-free crystals can be facilitated by deliberate periods of mild dissolution. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1126/science.adi3690
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 6
        StartPage: 915
    Subjects:
      – SubjectFull: Crystal growth
        Type: general
      – SubjectFull: Dolomite
        Type: general
      – SubjectFull: Supersaturated solutions
        Type: general
      – SubjectFull: Supersaturation
        Type: general
      – SubjectFull: Transmission electron microscopy
        Type: general
      – SubjectFull: Surface strains
        Type: general
    Titles:
      – TitleFull: Dissolution enables dolomite crystal growth near ambient conditions.
        Type: main
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          Name:
            NameFull: Joonsoo Kim
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            NameFull: Yuki Kimura
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            NameFull: Puchala, Brian
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            NameFull: Tomoya Yamazaki
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            NameFull: Becker, Udo
      – PersonEntity:
          Name:
            NameFull: Wenhao Sun
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            – D: 24
              M: 11
              Text: 11/24/2023
              Type: published
              Y: 2023
          Identifiers:
            – Type: issn-print
              Value: 00368075
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              Value: 382
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              Value: 6673
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            – TitleFull: Science (pre-March 2025)
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