Fluorapatite measurement, Marshall 1988

Reference	Marshall, D.J. (1988). Cathodoluminescence of geological materials. London, UK: Unwin Hyman Ltd.
Material	Fluorapatite [ Ca₅(PO₄)₃F ] Image of Fluorapatite, Albite and Muscovite in specimen 'M 49292 Fluorapatite' (Museums Victoria) from Victoria, Australia Unknown photographer, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)
Specimen temperature	Ambient
Analysis technique	Unknown
Line	Mn²⁺ 565 nm

Nominal composition of Fluorapatite [ Ca₅(PO₄)₃F ].
Element	Atoms	At%	Wt%
Ca	5	23.8	39.7
P	3	14.3	18.4
O	12	57.1	38.1
F	1	4.76	3.77
Total	21	100	100