Niobite is a mineral consisting of niobium and tantalum. There are several synonyms for niobite including columbite, niobite-tantalite, and tantalite. Columbite is often used to describe a mineral containing both niobium and tantalum. Niobite-tantalite is a common name for a mineral that has varying amounts of niobite and tantalite, while tantalite is a mineral containing only tantalum. These different names are often used interchangeably, depending on the composition of the mineral. Regardless of the name used, these minerals are typically found in relation to granitic rocks and pegmatites, and they are often mined for their valuable niobium and tantalum content.