sidwillite

== English == === Etymology === Named after American mineralogist Sidney Arthur Williams (1933–2006), who played a prolific part in western United States mineralogy, +‎ -ite. === Noun === sidwillite (mineralogy) A monoclinic-prismatic mineral containing hydrogen, molybdenum, and oxygen. === Further reading === David Barthelmy (1997–2026), “Sidwillite”, in Webmineral Mineralogy Database. “sidwillite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026.