Cited by 246Calcium Carbonate Crystallization and InhibitionGeochemistry and Elemental AnalysisCO2 Sequestration and Geologic Interactions

The DOI matches its Crossref record; 41 of the 41 references it cites were found in a registry or an index; 1 of the 25 sources its claims cite were checked for support.

Surface chemistry allows for abiotic precipitation of dolomite at low temperature

Open access

Abstract

Although the mineral dolomite is abundant in ancient low-temperature sedimentary systems, it is scarce in modern systems below 50 °C. Chemical mechanism(s) enhancing its formation remain an enigma because abiotic dolomite has been challenging to synthesize at low temperature in laboratory settings. Microbial enhancement of dolomite precipitation at low temperature has been reported; however, it is still unclear exactly how microorganisms influence reaction kinetics. Here we document the abiotic synthesis of low-temperature dolomite in laboratory experiments and constrain possible mechanisms for dolomite formation. Ancient and modern seawater solution compositions, with identical pH and pCO2, were used to precipitate an ordered, stoichiometric dolomite phase at 30 °C in as few as 20 d. Mg-rich phases nucleate exclusively on carboxylated polystyrene spheres along with calcite, whereas aragonite forms in solution via homogeneous nucleation. We infer that Mg ions are complexed and dewatered by surface-bound carboxyl groups, thus decreasing the energy required for carbonation. These results indicate that natural surfaces, including organic matter and microbial biomass, possessing a high density of carboxyl groups may be a mechanism by which ordered dolomite nuclei form. Although environments rich in organic matter may be of interest, our data suggest that sharp biogeochemical interfaces that promote microbial death, as well as those with high salinity may, in part, control carboxyl-group density on organic carbon surfaces, consistent with origin of dolomites from microbial biofilms, as well as hypersaline and mixing zone environments.

Overview

Integrity signals

Registry

Crossref · 10.1073/pnas.1305403110

Cites

41 of 41 references verified0 citation errors · 0 not checkable

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Claims the paper makes

11 No full text of the sources · 10 Own interpretation · 10 Own result · 4 Sources not found · 3 Not checked yet · 3 Own method · 1 Partly supported · accuracy not yet measured

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  • It may state two separate claims as one. 24
  • Probably not a substantial claim. 5
26 of 26
  • The authors state this as an assumption.

    Carboxylated polystyrene microspheres are adequate models for natural organic surfaces, including microbial EPS, in dolomite nucleation.

    “Here we report an example of abiotic laboratory precipitation of dolomite at 30 °C by nucleation on synthetic, carboxylated surfaces, used as models for natural organic surfaces including microbial EPS.”
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Research works printed but not linked: 2

  1. Kinnebrew N (2012) Metal sorption onto halophilic Archaea. MS thesis (Univ of Kansas Lawrence).
  2. , eds LS Clesceri, AE Greenberg, AD Eaton (American Public Health Association, 20th Ed, Washington, DC) Standard Methods for Examination of Water & Wastewater, pp. 1325 (1999).

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Metadata

Authors
Roberts, J. A., Kenward, P. A., Fowle, D. A., Goldstein, R. H., González, L. A., & Moore, D. S.
Affiliations
  • University of Kansas (US)
  • Department of Geology and
Venue
Proceedings of the National Academy of Sciences
Published
2013-08-20
Volume
110
Issue
36
Pages
14540-14545
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2066115290
Cited by
246
References
40
Citations by year
2026: 14 · 2025: 21 · 2024: 23 · 2023: 24 · 2022: 18 · 2021: 30 · 2020: 15 · 2019: 24 · 2018: 13 · 2017: 13 · 2016: 21 · 2015: 10 · 2014: 20
FWCI
6.49
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Calcium Carbonate Crystallization and Inhibition
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
  • Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
Keywords
surface chemistry, carboxyl groups, polystyrene microspheres, magnesium complexation, carbonation, nucleation, calcite, aragonite, biofilm, dolomite origin, seawater chemistry, reaction kinetics
MeSH terms
Bacteria, Calcium Carbonate, Carbon Dioxide, Environmental Microbiology, Hydrogen-Ion Concentration, Magnesium, Microscopy, Electron, Scanning, Models, Chemical, Chemical Precipitation, Seawater, Spectrometry, X-Ray Emission, Surface Properties, Temperature, X-Ray Diffraction, Bioreactors, Salinity

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