Which of the following is the chief mineral of bone?
The inorganic or mineral component is mainly crystalline hydroxyapatite--Ca10(PO4)6(OH)2--along with sodium, magnesium, carbonate, and fluoride; approximately 99% of the body's calcium is contained in bone. Hydroxyapatite confers on bone the strength and resilience required by its physiologic roles. Type I collagen is the major protein, comprising 90-95% of the organic material. Ref: Keeley F.W., Murray R.K. (2011). Chapter 48. The Extracellular Matrix. In D.A. Bender, K.M. Botham, P.A. Weil, P.J. Kennelly, R.K. Murray, V.W. Rodwell (Eds), Harper's Illustrated Biochemistry, 29e.
Calcium oxalate
Hydroxyapatite
Calcium carbonate
Calcite