a family of calcium phosphate salts which are found in hard tissues like bone, teeth and shells.
Found on http://www.encyclo.co.uk/local/20169


A group of phosphate minerals that includes ten mineral species and has the general formula x5(yo4)3z, where x is usually calcium or lead, y is phosphorus or arsenic, and z is chlorine, fluorine, or oh-. ... (12 Dec 1998) ...
Found on http://www.encyclo.co.uk/local/20973
No exact match found