Wadeite PL/XL measurement, x-ray beam, Gaft et al 1981; Khomiakov 1995

Reference	Gaft M.L., Gorobets B.S. and Khomiakov A.P. On the origins of the luminescence of minerals of titanium and zirconium. - Dokladi Academii Nauk SSSR. - 1981. - V. 260. - No. 5. - P. 1234-1237. ; Khomiakov A.P. Mineralogy of Hyperagpaitic Alkaline Rocks. Oxford: Clarendon Press - 1995. 224p.
Material	Wadeite [ K₂ZrSi₃O₉ ] Wadeite (lavender, 1.8cm) on orthoclase-aegirine matrix, from Eveslogchorr Mt, Khibiny Massif, Murmansk Oblast, Russia. Size: 2.7 x 2.7 x 2.2 cm © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Specimen temperature	Ambient
Technique	X-ray photoluminescence
Probe	X-ray beam
Lines	TiO6?^8- 440 nm, ZrO6?^8- 280 nm

Nominal composition of Wadeite [ K₂ZrSi₃O₉ ].
Element	Atoms	At%	Wt%
K	2	13.3	19.7
Zr	1	6.67	22.9
Si	3	20	21.2
O	9	60	36.2