Disappointing that this mineral name has nothing to do with aliens, but as a compensation the actual story behind it is kind of hilarious.

https://en.wikipedia.org/wiki/Xenotime

“The name xenotime is from the Greek words kenós (κενός) 'vain' and timē (τιμή) 'honor', akin to 'vainglory'. It was coined by French mineralogist François Sulpice Beudant as a rebuke of another scientist, Swedish chemist Jöns Jacob Berzelius, for the latter's premature claim to have found in the mineral a new chemical element (later understood to be previously discovered yttrium). The criticism was blunted, as over time kenotime was misread and misprinted xenotime with the error suggesting the etymology xénos (ξένος) + timē (τιμή) as 'different honor'. Xenotime was first described for an occurrence in Vest-Agder, Norway in 1824.”