Optical, physical and chemical properties of pineal gland calcifications
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Calcifications of the pineal gland in the form of calcospherulites have been studied by optical microscopy, electron microscopy, electron probe analysis, X-ray diffraction, thermogravimetry, and infra-red and chemical analysis. Complex calcospherulite textures have been observed which have a granular substructure made up of apatite crystals averaging 218 Å in length and 38 Å in width. These apatite crystals appear to be a carbonate-containing hydroxyapatite, mineralogically similar to enamel.
Key wordsApatite Calcification Pineal gland Calcospherulites Calculi
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- Elliot, J. C.: Tooth enamel. Contributions to international symposium on tooth enamel, p. 20–58. Bristol: John Wright and Sons 1965Google Scholar
- Emerson, W. H., Fischer, E. E.: Infra-red absorption spectra of carbonate in calcified tissues. Arch. oral Biol.7, 671 (1962)Google Scholar
- Gardner, Murray B., Blankenhorn, David H.: Aortic medial calcification—an ultrastructure study. Arch. Path.85, 403 (1968)Google Scholar
- Klug, Harold P., Alexander, LeRoy E.: X-ray diffraction procedures for polycrystalline and amorphous materials, p. 491–511. New York: John Wiley and Sons 1954Google Scholar
- Palache, C., Berman, H., Frondel, C.: The system of mineralogy of James D. Dana and Edward S. Dana, vol. 2, 7th ed., p. 877–889, and 902–4. New York: John Wiley and Sons 1951Google Scholar
- Swanson, Howard: Standard X-ray diffraction patterns, U. S. Department of Commerce, National Bureau of Standards, Monograph 25, Section 4, p. 344, June 28, 1966Google Scholar