A rare calcium silicate mineral that contains hydroxyl groups and forms in metamorphic rocks.
Named after A.F. Williams, a mineralogist, with the suffix '-ite' (indicating a mineral). Discovered in the early 20th century and classified in scientific mineralogy.
Mineralogists name minerals after people who discover them—afwillite is named after A.F. Williams, so every mineral name is actually a tiny history of scientific discovery frozen in rock.
Complete word intelligence in one call. Free tier — 50 lookups/day.