The Transient Phase of Amorphous Calcium Carbonate in Sea Urchin Larval Spicules: The Involvement of Proteins and Magnesium Ions in Its Formation and Stabilization

2003 ◽  
Vol 13 (6) ◽  
pp. 480-486 ◽  
Author(s):  
S. Raz ◽  
P.C. Hamilton ◽  
F.H. Wilt ◽  
S. Weiner ◽  
L. Addadi
Keyword(s):  
Calcium Carbonate ◽  
Sea Urchin ◽  
Transient Phase ◽  
Magnesium Ions ◽  
Amorphous Calcium Carbonate

scholarly journals On the Relation of Amorphous Calcium Carbonate and the Macromechanical Properties of Sea Urchin Spines

2020 ◽  
Vol 22 (4) ◽  
pp. 1900922 ◽  
Author(s):  
Christoph Lauer ◽  
Sebastian Haußmann ◽  
Patrick Schmidt ◽  
Carolin Fischer ◽  
Doreen Rapp ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Sea Urchin ◽  
Amorphous Calcium Carbonate ◽  
Sea Urchin Spines

scholarly journals Transformation mechanism of amorphous calcium carbonate into calcite in the sea urchin larval spicule

2008 ◽  
Vol 105 (45) ◽  
pp. 17362-17366 ◽  
Author(s):  
Y. Politi ◽  
R. A. Metzler ◽  
M. Abrecht ◽  
B. Gilbert ◽  
F. H. Wilt ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Sea Urchin ◽  
Amorphous Calcium Carbonate ◽  
Transformation Mechanism

scholarly journals Amorphous calcium carbonate transforms into calcite during sea urchin larval spicule growth

1997 ◽  
Vol 264 (1380) ◽  
pp. 461-465 ◽  
Author(s):  
Elia Beniash ◽  
Joanna Aizenberg ◽  
Lia Addadi ◽  
Stephen Weiner
Keyword(s):  
Calcium Carbonate ◽  
Sea Urchin ◽  
Amorphous Calcium Carbonate

Water dynamics in hydrated amorphous materials: a molecular dynamics study of the effects of dehydration in amorphous calcium carbonate

2017 ◽  
Vol 19 (43) ◽  
pp. 29594-29600 ◽  
Author(s):  
Moumita Saharay ◽  
R. James Kirkpatrick
Keyword(s):  
Molecular Dynamics ◽  
Calcium Carbonate ◽  
Amorphous Materials ◽  
Water Dynamics ◽  
Water Molecules ◽  
Transient Phase ◽  
Amorphous Calcium Carbonate

Amorphous calcium carbonate (ACC) is a critical transient phase in the formation of crystalline CaCO3via dehydration of hydrated ACC. Although majority of water molecules in ACC are dynamically restricted, a very small fraction of them (∼2%) shows high diffusivity.

scholarly journals Interplay between Calcite, Amorphous Calcium Carbonate, and Intracrystalline Organics in Sea Urchin Skeletal Elements

2018 ◽  
Vol 18 (4) ◽  
pp. 2189-2201 ◽  
Author(s):  
Marie Albéric ◽  
Elad N. Caspi ◽  
Mathieu Bennet ◽  
Widad Ajili ◽  
Nadine Nassif ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Sea Urchin ◽  
Amorphous Calcium Carbonate

Effects of Magnesium Ions and Water Molecules on the Structure of Amorphous Calcium Carbonate: A Molecular Dynamics Study

2013 ◽  
Vol 117 (47) ◽  
pp. 14849-14856 ◽  
Author(s):  
Hidekazu Tomono ◽  
Hiroki Nada ◽  
Fangjie Zhu ◽  
Takeshi Sakamoto ◽  
Tatsuya Nishimura ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Calcium Carbonate ◽  
Water Molecules ◽  
Magnesium Ions ◽  
Amorphous Calcium Carbonate

A crucial process: organic matrix and magnesium ion control of amorphous calcium carbonate crystallization on β-chitin film

CrystEngComm ◽  
2015 ◽  
Vol 17 (1) ◽  
pp. 32-39 ◽  
Author(s):  
Yufei Ma ◽  
Qingling Feng
Keyword(s):  
Aqueous Solution ◽  
Calcium Carbonate ◽  
Organic Matrix ◽  
Water Soluble ◽  
Magnesium Ion ◽  
Magnesium Ions ◽  
Amorphous Calcium Carbonate ◽  
Transformation Processes

ACC transformation processes occurring on chitin film mediated by a water soluble matrix or magnesium ions in aqueous solution were investigated.

scholarly journals A hydrated crystalline calcium carbonate phase: Calcium carbonate hemihydrate

Science ◽  
2019 ◽  
Vol 363 (6425) ◽  
pp. 396-400 ◽  
Author(s):  
Zhaoyong Zou ◽  
Wouter J. E. M. Habraken ◽  
Galina Matveeva ◽  
Anders C. S. Jensen ◽  
Luca Bertinetti ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Cement Industry ◽  
Industrial Processes ◽  
Magnesium Ions ◽  
Monoclinic Structure ◽  
Ambient Conditions ◽  
Amorphous Calcium Carbonate ◽  
Hydrated Crystal ◽  
Global Carbon

As one of the most abundant materials in the world, calcium carbonate, CaCO3, is the main constituent of the skeletons and shells of various marine organisms. It is used in the cement industry and plays a crucial role in the global carbon cycle and formation of sedimentary rocks. For more than a century, only three polymorphs of pure CaCO3—calcite, aragonite, and vaterite—were known to exist at ambient conditions, as well as two hydrated crystal phases, monohydrocalcite (CaCO3·1H2O) and ikaite (CaCO3·6H2O). While investigating the role of magnesium ions in crystallization pathways of amorphous calcium carbonate, we unexpectedly discovered an unknown crystalline phase, hemihydrate CaCO3·½H2O, with monoclinic structure. This discovery may have important implications in biomineralization, geology, and industrial processes based on hydration of CaCO3.

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