Comparison of synthetic and mineral fluorapatite, Ca5 (PO4)3F, in crystallographic detail

Content Provider	Semantic Scholar
Author	Sudarsanan, Kesavan Mackie, Paul Elias Young, Richard A.
Copyright Year	1972
Abstract	Detailed crystal structure refinements based on x-ray intensity data measured to ∼1% precision in most cases (R1 = 1.6% and 2.9%) show that the atomic positions in both synthetic and mineral fluorapatite (space group P63/m, a = 9.367(1) A, c = 6.884(1), and Z = 2) agree within less than 0.001 A. Observed differences of 10 to 30% in the thermal parameters are ascribed to the effects of impurity and vacancy substitutions. Although the new atomic parameters differ significantly (up to 0.1 A) by current standards from those reported nearly 40 years ago by Naray-Szabo and refined by Beevers and McIntyre, the differences generally represent improvements in precision rather than corrections.
Starting Page	1331
Ending Page	1337
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1016/0025-5408(72)90113-4
Volume Number	7
Alternate Webpage(s)	http://rruff.info/uploads/MRB7_1331.pdf
Alternate Webpage(s)	https://doi.org/10.1016/0025-5408%2872%2990113-4
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article