Microcline PL/XL measurement, x-ray beam, Kuzetsov and Tarashchan 1988

Reference	Kuznetsov G.V. and Tarashchan A.N. Luminescence of Minerals from Granite Pegmatites. - Kyiv: Naukova Dumka. - 1988. - 178 p.
Material	Microcline [ KAlSi₃O₈ ] Microcline (var. amazonite) specimen from Crystal Peak, Park Co., CO, USA © Photo by Chip Clark, via Smithsonian National Museum of Natural History
Specimen temperature	Ambient
Technique	X-ray photoluminescence
Probe	X-ray beam
Lines	Fe 720 nm, O 480 nm, Pb¹⁺ 830 nm, Tl⁺ 290 nm

Nominal composition of Microcline [ KAlSi₃O₈ ].
Element	Atoms	At%	Wt%
K	1	7.69	14
Al	1	7.69	9.69
Si	3	23.1	30.3
O	8	61.5	46