A WAXD study was carried out to compare the crystallographic structure of HAp powders. The experiments were performed at room temperature using a Rigaku Ultima IV diffractometer (Bragg-Brentano geometry) from Rigaku International Corporation equipped with Ni-filtered Cu Kα radiation (λ = 1.54178 Å) generated by a sealed X-ray tube. The radiation source was powered by a generator operating at 40 kV and 30 mA. Data were collected over a 2θ range of 2-80° in continuous scan mode with a step size of 0.005° and a scan rate of 5 °C/min. For data presentation, the WAXD diffractograms were exported as ASCII files to OriginPro 2021.