Prior to a discussion of the inorganic substance of teeth and bones and/or discussion of phosphorites, it is essential to indicate the nature and extent of the complexities of these substances. In 1822 Haüy  supposed that certain phosphorite minerals which occurred as vein fillings in Spain were to be considered as mixtures of a calcium phosphate mineral and a calcium carbonate mineral. In other words, Haüy assumed that two mineral phases were present in the “crude calcium phosphates” at Estremadura, and that Werner was in error in assigning to these mineral substances a separate name, phosphorite.
KeywordsCarbonate Group Carbonate Apatite Apatite Structure Molar Refractivity Apatitic Phase
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