I touched up my stamp album pages for Namibia today, and noticed that there is a mineral on the R5 stamp named after me*: Willemite.
*Actually, it is named after King William I of the Netherlands 😁.
Willemite is a silicate mineral (Zn2SiO4), discovered in 1829 in the Belgian Vieille-Montagne mine. Mineralogist Armand Lévy was shown samples by a student at the university where he was teaching, and he named it after William I. It is occasionally spelled villemite.
[From Wikpedia]

