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Crystallographic data for mixed apatites of general formula Mg x Ca 10-x (Po 4 ) 6 F 2  (x = 1 - 4) have been obtained from X-ray powder data. The unit cell becomes increasingly distorted with the increase of magnesium concentration. The infrared and Raman spectra show that the magnesium incorporation has a negligible effect on the strength of the P - O bonds. The results are discussed in relation with their relevance to the properties of vertebrate hard tissues.

zeitschrift für naturforschung b

Röntgenographische und spektroskopische Untersuchung einiger gemischter Magnesium/Calcium-Fluoroapatite/X-Ray and Spectroscopic Investigation of Some Mixed Magnesium/Calcium Fluoroapatites