Hydroxyapatite (HAp) is a stable composition of calcium phosphate and is an inorganic material in human hard tissues such as bones and teeth. Hydroxyapatite synthesis from lokan (Geloina coaxans) shells using egg shell biotemplate has been successfully carried out. Lokan powder (Geolina coaxans) calcined 1000 oC for 12 hours to obtain CaO which was analyzed using X-Ray Fluorescence (XRF). XRF a…