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  2. Body piercing materials - Wikipedia

    en.wikipedia.org/wiki/Body_piercing_materials

    When using niobium in a piercing jewelry it has to be as pure as possible, the threshold value being 99.9% niobium. This is sometimes called "999 Niobium". Impurities in low quality material can lead to allergies. Pure niobium does not react to body fluids, oxygen or cleaning agents. It can safely be autoclaved.

  3. Columbite - Wikipedia

    en.wikipedia.org/wiki/Columbite

    Columbite, also called niobite, niobite-tantalite and columbate, with a general chemical formula of (Fe II,Mn II)Nb 2 O 6, is a black mineral group that is an ore of niobium. It has a submetallic luster, a high density, and is a niobate of iron and manganese. Niobite has many applications in areospace, construction and the medical industry.

  4. Niobium - Wikipedia

    en.wikipedia.org/wiki/Niobium

    Niobium oxidizes in Earth's atmosphere very slowly, hence its application in jewelry as a hypoallergenic alternative to nickel. Niobium is often found in the minerals pyrochlore and columbite. Its name comes from Greek mythology: Niobe, daughter of Tantalus, the namesake of tantalum. The name reflects the great similarity between the two ...

  5. Category:Niobium minerals - Wikipedia

    en.wikipedia.org/wiki/Category:Niobium_minerals

    Pages in category "Niobium minerals" The following 41 pages are in this category, out of 41 total. This list may not reflect recent changes. A. Achalaite; Aeschynite-(Y)

  6. Category:Niobium compounds - Wikipedia

    en.wikipedia.org/wiki/Category:Niobium_compounds

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  7. Ferroniobium - Wikipedia

    en.wikipedia.org/wiki/Ferroniobium

    Ferroniobium is an important iron-niobium alloy, with a niobium content of 60-70%. [1] It is the main source for niobium alloying of HSLA steel and covers more than 80% of the worldwide niobium production. The niobium is mined from pyrochlore deposits and is subsequently transformed into the niobium pentoxide Nb 2 O 5.