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Transformation mechanism of amorphous calcium carbonate into calcite in the sea urchin larval spicule
Open accessAbstract
Sea urchin larval spicules transform amorphous calcium carbonate (ACC) into calcite single crystals. The mechanism of transformation is enigmatic: the transforming spicule displays both amorphous and crystalline properties, with no defined crystallization front. Here, we use X-ray photoelectron emission spectromicroscopy with probing size of 40–200 nm. We resolve 3 distinct mineral phases: An initial short-lived, presumably hydrated ACC phase, followed by an intermediate transient form of ACC, and finally the biogenic crystalline calcite phase. The amorphous and crystalline phases are juxtaposed, often appearing in adjacent sites at a scale of tens of nanometers. We propose that the amorphous-crystal transformation propagates in a tortuous path through preexisting 40- to 100-nm amorphous units, via a secondary nucleation mechanism.
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Cites
Taking advantage of disorder: amorphous calcium carbonate and its roles in biomineralization
Addadi, L., Raz, S., & Weiner, S. (2003) · Advanced Materials · doi:10.1002/adma.200300381 · Cited by 1,594
Self-citationControl of Aragonite or Calcite Polymorphism by Mollusk Shell Macromolecules
Falini, G., Albeck, S., Weiner, S., & Addadi, L. (1996) · Science · doi:10.1126/science.271.5245.67 · Cited by 1,437
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Cited by
Crystallization by particle attachment in synthetic, biogenic, and geologic environments
De Yoreo, J. J., Gilbert, P. U. P. A., Sommerdijk, N. A. J. M., Penn, R. L., Whitelam, S., Joester, D., Zhang, H., Rimer, J. D., Navrotsky, A., Banfield, J. F., et al. (2015) · Science · doi:10.1126/science.aaa6760 · Cited by 2,137
Self-citationPrenucleation clusters and non-classical nucleation
Gebauer, D., & Cölfen, H. (2011) · Nano Today · doi:10.1016/j.nantod.2011.10.005 · Cited by 682
Transformation and crystallization energetics of synthetic and biogenic amorphous calcium carbonate
Radha, A. V., Forbes, T. Z., Killian, C. E., Gilbert, P. U. P. A., & Navrotsky, A. (2010) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1009959107 · Cited by 509
Self-citationMechanistic Insights into the Crystallization of Amorphous Calcium Carbonate (ACC)
Bots, P., Benning, L. G., Rodriguez-Blanco, J.-D., Roncal-Herrero, T., & Shaw, S. (2012) · Crystal Growth & Design · doi:10.1021/cg300676b · Cited by 474
Water Is the Key to Nonclassical Nucleation of Amorphous Calcium Carbonate
Raiteri, P., & Gale, J. D. (2010) · Journal of the American Chemical Society · doi:10.1021/ja108508k · Cited by 420
Metadata
- Authors
- Politi, Y., Metzler, R. A., Abrecht, M., Gilbert, B., Wilt, F. H., Sagi, I., Addadi, L., Weiner, S., & Gilbert, P. U. P. A.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2008-11-11
- Volume
- 105
- Issue
- 45
- Pages
- 17362-17366
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2155143569
- Cited by
- 436
- References
- 2
- FWCI
- 8.91
- Type
- journal article
- Language
- en
- Open access
- green
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- Politi, Y., Metzler, R. A., Abrecht, M., Gilbert, B., Wilt, F. H., Sagi, I., Addadi, L., Weiner, S., & Gilbert, P. U. P. A. (2008). Transformation mechanism of amorphous calcium carbonate into calcite in the sea urchin larval spicule. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0806604105
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