Post-Graduate Department of Chemistry, G. M. College, Sambalpur Manuscript received 11 September 1976, received 10 February 1977, accepted 10 May 1977 The Introduction of Cu2+ In calcium hydroxylapatite results In the formation of its solid solution. In the infrared spectral studies of the samples, the vibrations corresponding to v3 v4 and are shifted to lower frequencies due to on Increase In mass and binding energy as a result of substitution of Ca2 by Cu2+.