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Some of these chemical variants have mineral species names. Besides the
chemical variants of the calcium phosphate apatites, numerous compounds can
be synthesized that exhibit a structure identical or closely related to that of apatite
The density of chlorapatite is about 3.2, and the structure is similar to that of other
apatites but differs in the position of the halogen. Because the chloride ion is 1.8
A (one angstrom unit [A] equals 10~8 centimetre) in size, it lies between two of ...
Social The more plausible approach may be in seeing that the structure social
structure is the ultimate source of the bulk of pov- of the poor erty. This orientation
allows one to encompass structural factors (for instance, technological change) ...
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