Calcite Reinforced Silica–Silica Joints in the Biocomposite Skeleton of Deep-Sea Glass Sponges (pages 3473–3481)
Hermann Ehrlich, Eike Brunner, Paul Simon, Vasily V. Bazhenov, Joseph P. Botting, Kontantin R. Tabachnick, Armin Springer, Kurt Kummer, Denis V. Vyalikh, Serguei L. Molodtsov, Denis Kurek, Martin Kammer, René Born, Alexander Kovalev, Stanislav N. Gorb, Petros G. Koutsoukos and Adam Summers
Article first published online: 29 JUL 2011 | DOI: 10.1002/adfm.201100749
In the stalk and body skeleton of deep-sea glass spongeCaulophacusspecies siliceous spicules are modified by the addition of conical calcite seeds, which form the basis for further silica secretion to form a spinose region. The hierarchically structured glass sponge uses a silica and calcite biocomposite to join the spicules of its skeleton together, and the hexactinellid sponges are capable of synthesizing calcite, the ancestral skeletal material. Computer reconstruction is based on scanning electron microscopy images and represents the view on mechanical coupling between unique spinose surfaces of two thin spicules within one large spicule.