The story
Etymology from Wiktionary, CC BY-SA 4.0.
columbite
Today it means: A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum. Full definition →
Today it means: A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum. Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.