Apatite CL/SEM measurement, e<sup>-</sup> beam, Barbarand & Pagel 2001

Apatite CL/SEM measurement, e^- beam, Barbarand & Pagel 2001

Reference	Barbarand & Pagel 2001 Barbarand J. & Pagel M. (2001). Cathodoluminescence study of apatite crystals. American Mineralogist, 86(4), 473-484. DOI: https://doi.org/10.2138/am-2001-0411
Material	Apatite [ Ca₅(PO₄)₃(OH, F, Cl) ] Doubly-terminated fluorapatite crystal in calcite, from Yates mine, Otter Lake, Pontiac RCM, Outaouais, Québec, Canada © Photo by Didier Descouens, CC-SA-4.0
Specimen temperature	Ambient
Technique	Cathodoluminescence (CL), using a Scanning Electron Microscope (SEM)
Probe	Electron beam
Lines	Ce³⁺ 350 nm, 380 nm, 458 nm Dy³⁺ 482 nm, 577 nm, 667 nm Er³⁺ 403 nm {{linesearch:d8789ca3-d2e9-4567-9396-a20d521a652a\|Eu²⁺}}: 451 nm {{linesearch:8dd2e589-8c52-4d6e-87c8-3adba95d071b\|Gd³⁺}}: 312 nm {{linesearch:72162632-9d03-4f81-a008-32dbf62a136c\|Intrinsic}}: 345 nm, 377 nm, 432 nm, 564 nm Sm³⁺ 566 nm, 599 nm, 649 nm Tb³⁺ 381 nm, 416 nm, 438 nm, 490 nm, 546 nm

Nominal composition of Apatite [ Ca₅(PO₄)₃(OH,F,Cl) ].
Element	Atoms	At%	Wt%
H	0.118	1.66	0.07
Ca	1.667	23.42	39.36
P	1	14.05	18.25
O	4.112	57.76	38.76
F	0.111	1.56	1.24
Cl	0.111	1.56	2.32