In this work our attention was focused on the characterization of a corbicula species shell and the synthesis and characterization of collagen/mollusc shell composite materials. The mollusc shell and the composite material were characterized by XRD, SEM, FTIR and DTA-TG. It can be concluded that mollusc shell contain more than 98% of CaCO₃ and less than 2% organic phase. The composite material was obtained by mixing fine milled mollusc shell and collagen in 4:1 weight ratio. The recorded SEM images of the obtained composite material exhibit a very good homogeneity; the collagen nanofibrils acting as glue between carbonate particles.