Abstract
Drilled cores of natural apatite were crushed and ground to the required mesh size. The apatite crystals, picked out from under a binocular microscope, were characterized by electron microscopy, chemical analysis, X-ray diffraction and infrared studies. It was confirmed that calcium hydroxylapatite also crystallizes in nature under alkaline ultramafic rock-forming conditions.
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Saikia, G.C., Barman, G. & Baishya, N.K. Characterization of natural apatite. J Mater Sci 28, 2311–2314 (1993). https://doi.org/10.1007/BF01151658
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DOI: https://doi.org/10.1007/BF01151658