<prompt> Major mineral of the bone isCalciteHydroxyapatiteCalcium oxideCalcium carbonate  <response>: Hydroxyapatite Hydroxyapatite crystals are the major mineral of bone Hydroxyapatite also ka bone mineral is the salt of calcium and phosphorus with the formula CalcPO46012. Structural composition of bone : Also know Bone has to be 50 mineralised to be visible on radiographs. 