Amorphous calcium carbonate transforms into calcite during sea urchin larval spicule growth
Amorphous calcium carbonate transforms into calcite during sea urchin larval spicule growth
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DOI：
10.1098/rspb.1997.0066
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发表时间：
1997-03-22
影响因子：
4.7
通讯作者：
Weiner, S
中科院分区：
文献类型：
--
作者：
Beniash, E;Aizenberg, J;Weiner, S
海胆幼虫形成由一对针状体组成的内骨骼。一个多世纪以来，人们一直认为每个针状物都是由碳酸钙矿物方解石的单晶组成的。我们发现，在海胆幼虫针状体中存在一种额外的矿物相——无定形碳酸钙，这种固有的不稳定矿物随着时间的推移会转变为方解石。这一观察结果极大地改变了我们对这种经过充分研究的有机体中矿物形成的概念。
Sea urchin larvae form an endoskeleton composed of a pair of spicules. For more than a century it has been stated that each spicule comprises a single crystal of the CaCO3 mineral, calcite. We show that an additional mineral phase, amorphous calcium carbonate, is present in the sea urchin larval spicule, and that this inherently unstable mineral transforms into calcite with time. This observation significantly changes our concepts of mineral formation in this well-studied organism.