This paper presents the method of obtaining hydroxyapatite from animal bones. Bone sludge and calcined products were characterized
by X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). Calcium
concentration was determined with titration, and phosphorus – spectrophotometrically. Making use of the AAS and ICP methods the
content of microelements was determined. In all the products, hydroxyapatite was the only crystalline phase indicated. The FT-IR spectra
confirmed that calcination removed the total of organic substances. Calcium and phosphorus contents were 38% and 18%, respectively,
which corresponded to the Ca/P molar ratio of nonstoichiometric hydroxyapatite. The specific surfaces of products were measured by
BET method. The volume of micro- and mesopores was determined