columbite (HyperDic hyper-dictionary)

English > 1 sense of the word *columbite*:
NOUN	substance	columbite, niobite	a black mineral that is an ore of niobium and tantalum

English > *columbite*: 1 sense > noun 1, substance
Meaning	A black mineral that is an ore of niobium and tantalum.
Synonym	niobite
Broader	mineral	Solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Substances	niobium, Nb, atomic number 41	A soft grey ductile metallic element used in alloys
Substances	tantalum, Ta, atomic number 73	A hard grey lustrous metallic element that is highly resistant to corrosion
Spanish	columbita, niobite
Catalan	columbita, niobita

HyperDic: columbite