A calcium aluminum silicate mineral, a type of feldspar that forms the anorthic crystal system; one of the most common minerals in Earth's crust.
From 'anorthic' (lacking right angles in its crystal structure) + '-ite' (mineral suffix). The mineral was named based on its unusual crystallographic properties.
Anorthite is literally in the rocks beneath your feet—it's one of Earth's most abundant minerals and makes up a huge part of the moon's surface, but almost nobody knows its name because it usually hides inside larger crystals of feldspar.
Complete word intelligence in one call. Free tier — 50 lookups/day.