NZ 607661 Disclosed is a compressed implant composite for repairing mineralised tissue, the composite comprising: a cross-linked matrix formed of biopolymeric fibres; and a plurality of calcium- or silicate-based mineral particles dispersed in the matrix, wherein, the matrix constitutes 4 to 80% by weight, the mineral particles constitute 20 to 96% by weight; the composite is free of soluble collagen and is self-expandable to a volume 2 to 100 times of its compressed volume.