Does Xenon really covalently bond to oxygen within quartz? Wikipedia's Xenon; occurrence and production says


  Within the Solar System, the nucleon fraction of xenon is $\small\mathsf{1.56 \times 10^{-8}}$, for an abundance of approximately one part in 630 thousand of the total mass. Xenon is relatively rare in the Sun's atmosphere, on Earth, and in asteroids and comets. The abundance of xenon in the atmosphere of planet Jupiter is unusually high, about 2.6 times that of the Sun. This abundance remains unexplained, but may have been caused by an early and rapid buildup of planetesimals—small, subplanetary bodies—before the heating of the presolar disk. (Otherwise, xenon would not have been trapped in the planetesimal ices.) The problem of the low terrestrial xenon may be explained by covalent bonding of xenon to oxygen within quartz, reducing the outgassing of xenon into the atmosphere.


I know that crystals can provide unusual amounts of local pressure. For example, this answer explains that ice VII has been discovered at room temperature as inclusions in diamonds.

Question: But I'm still surprised to read about covalent bonding of xenon with oxygen within quartz. How/where has this been observed in naturally occurring mineral or rock, and what is the evidence of covalent bonding?
Not sure this is appropriate for Earth Science SE (Chemistry SE would be a better fit), but the answer is &quot;maybe&quot;.  quoting from the same Wikipedia article:

Three oxides of xenon are known: xenon trioxide ($\small\mathsf{XeO_3)}$ and xenon
tetroxide $\small\mathsf{(XeO_4)}$, both of which are dangerously explosive and powerful
oxidizing agents, and xenon dioxide $\small\mathsf{(XeO_2)}$, which was reported in
2011 with a coordination number of four.[97] $\small\mathsf{XeO_2}$ forms when xenon
tetrafluoride is poured over ice. Its crystal structure may allow it
to replace silicon in silicate minerals.[98] The $\small\mathsf{XeOO^+}$ cation has
been identified by infrared spectroscopy in solid argon.[99]

Cited references
97.
Bell, C.F. (2013). Syntheses and Physical Studies of Inorganic Compounds. Elsevier Science. p. 143. ISBN 9781483280608.
98.
Cockett, A.H.; Smith, K.C.; Bartlett, N. (2013). The Chemistry of the Monatomic Gases: Pergamon Texts in Inorganic Chemistry. Elsevier Science. p. 292. ISBN 9781483157368.
99.
Brock, D.S.; Schrobilgen, G.J. (2011). &quot;Synthesis of the missing oxide of xenon, XeO2, and its implications for earth's missing xenon&quot;. Journal of the American Chemical Society. 133 (16): 6265–9. doi:10.1021/ja110618g. PMID 21341650.
Evidence is given in Crepisson et al (2019) for xenon (as $\small\mathsf{XeO_2}$) incorporation into silica at high pressure.  XRD measurements show changes in the lattice consistent with xenon substituting for silicon in the oxide structure.