Earth Science Division, Lawrence Berkeley National Lab, Berkeley, CA 94720, USA.
Nanoscale. 2011 Feb;3(2):603-9. doi: 10.1039/c0nr00697a. Epub 2010 Nov 17.
Sea urchin biominerals have been shown to form from aggregating nanoparticles of amorphous calcium carbonate (ACC), which then crystallize into macroscopic single crystals of calcite. Here we measure the surface areas of these biominerals and find them to be comparable to those of space-filling macroscopic geologic calcite crystals. These biominerals differ from synthetic mesocrystals, which are invariably porous. We propose that space-filling ACC is the structural precursor for echinoderm biominerals.
已证实，海胆生物矿化是由无定形碳酸钙（ACC）的纳米粒子聚集形成，然后这些纳米粒子结晶为方解石的宏观单晶。在此，我们测量了这些生物矿化产物的表面积，发现其与充满空间的宏观地质方解石晶体相当。这些生物矿化产物与始终具有多孔性的合成准晶体不同。我们提出，充满空间的 ACC 是棘皮动物生物矿化的结构前体。
