gyrolite

== English == === Etymology === From gyro- +‎ -lite, from Ancient Greek γύρος (gúros, “ring, circle”) and λίθος (líthos, “stone”), for its round crystalline nodules. === Noun === gyrolite (countable and uncountable, plural gyrolites) (mineralogy) A hexagonal-pyramidal mineral containing aluminum, calcium, hydrogen, oxygen, silicon, and sodium. === Further reading === David Barthelmy (1997–2026), “Gyrolite”, in Webmineral Mineralogy Database. “gyrolite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026.