niobium

en-noun

niobium (countable and uncountable, plural niobiums)

From Niobe + -ium, because of the element's affinity with tantalum.

A chemical element (symbol Nb) with an atomic number of 41: a light grey, crystalline, ductile transition metal used in superconducting materials.


pyrochlore

pyrochlore (countable and uncountable, plural pyrochlores)

In general, the hydroxamates are used for flotation of oxidic minerals (pyrochlore, cassiterite and ilmenite), rare-earth oxides and oxide copper minerals.

2007, Srdjan M. Bulatovic, Handbook of Flotation Reagents: Chemistry, Theory and Practice, →ISBN, page 13:

(mineralogy) A mineral whose composition is that of a mixed niobate mostly of sodium, calcium and cerium, (Na,Ca)₂Nb₂O₆(OH,F).


niobate

(inorganic chemistry) Any salt, XNbO₃, of the weak niobic acid.

niobičnan

any salt, XNbO3, of the weak niobic acid


niobic acid

(inorganic chemistry) the hypothetical acid HNbO₃ derived from niobic oxide Nb₂O₅, only known as its salts, the niobates


tantalite

(mineralogy) A dark-brown mineral that is an ore of tantalum and niobium, of the chemical formula (Fe, Mn) Ta₂O₆.


lithium niobate

(inorganic chemistry) the lithium salt of niobic acid, LiNbO₃, whose transparent crystals are used lasers and other optical devices


columbite

(mineralogy) A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum.


potassium niobate

potassium niobate (plural potassium niobates)

(inorganic chemistry) The salt KNbO₃; its crystals have a large nonlinear optical coefficient, and it find use in the manufacture of lasers; nanowires of the substance have been used to produce tunable coherent light.


columbium

columbium (usually uncountable, plural columbiums)

From Columbus + -ium, named after Christopher Columbus by the element’s discoverer, Charles Hatchett.


fergusonite

A mineral composed of oxides of various rare earth elements.


zimbabweite

Zimbabwe, where it was discovered, and -ite.

(mineralogy) A yellow-brown mineral with chemical formula (Na,K)₂PbAs₄(Nb,Ta,Ti)₄O₁₈, generally classed as an arsenite.


nenadkevichite

nenadkevichite (usually uncountable, plural nenadkevichites)

Konstantin A Nenadkevich, Russian mineralogist, and -ite.

(mineralogy) A rare silicate mineral containing niobium.


coltan

Coltan is used for the production of tantalum capacitors.

[…] as of 2003 over one billion cell phones were in use worldwide, so by the time the high-tech bubble approached its bursting point in 2000 and 2001, coltan had become an extremely hot commodity.

2007, Elizabeth Grossman, High Tech Trash, Island Press, →ISBN, page 46:

Consider your mobile phone. Before it was assembled in a Chinese factory, the coltan in its capacitors may have been dug by miners in the Eastern Congo, where millions have died in a series of wars over ‘conflict minerals’, though we give this no more thought than previous generations of Westerners gave to the Congolese origins of the ivory in their piano keys, the rubber in their tyres, the copper in their bullet casings or the uranium in their bombs.

2014, Adam Schatz, ‘Ça va un peu’, London Review of Books, volume 36, number 20:

(mineralogy) A metallic ore, (Fe,Mn)(Ta,Nb)₂O₆, from which the elements niobium and tantalum are extracted.


betafite

betafite (countable and uncountable, plural betafites)

From Betafo + -ite, after Betafo in the Malagasy Republic, where it was discovered.

(mineralogy) A radioactive mineral in the pyrochlore group, having chemical formula (Ca,U)₂(Ti,Nb,Ta)₂O₆(OH).


zirkelite

zirkelite (usually uncountable, plural zirkelites)

Ferdinand Zirkel (1838-1912), German petrographer, + -ite.

(mineralogy) An isometric oxide mineral with the chemical formula (Ca,Th,Ce)Zr(Ti,Nb)₂O₇.


zircophyllite

(mineralogy) A complex mineral with the chemical formula (K,Na)₃(Mn,Fe)₇(Zr,Ti,Nb)₂Si₈O₂₄(OH,F)₇.


organoniobium

(organic chemistry) Describing any organic compound containing a carbon to niobium bond.


niobiferous

en-adj

niobiferous (comparative more niobiferous, superlative most niobiferous)

more niobiferous (comparative)
most niobiferous (superlative)


pelopium

(obsolete) A supposed chemical element, later found to be a mixture of niobium and tantalum.


columbiferous

columbiferous (comparative more columbiferous, superlative most columbiferous)

more columbiferous (comparative)
most columbiferous (superlative)


niobous

niobous (comparative more niobous, superlative most niobous)

more niobous (comparative)
most niobous (superlative)


niobite

en-noun

niobite (countable and uncountable, plural niobites)


kupletskite

After Boris Kupletski and Elsa Kupletskaya, Russian geologists, + -ite

(mineralogy) A monoclinic-prismatic mineral containing fluorine, hydrogen, iron, manganese, niobium, oxygen, potassium, silicon, sodium, and titanium.


vigezzite

(mineralogy) An orthorhombic-dipyramidal mineral containing calcium, cerium, niobium, oxygen, tantalum, and titanium.


oneillite

Named after Canadian geologist with the Geological Survey of Canada, John Johnston O'Neill (1886–1966), + -ite.

named-after

(mineralogy) A trigonal-pyramidal yellowish brown mineral containing calcium, chlorine, hydrogen, iron, manganese, niobium, oxygen, silicon, sodium, and zirconium.


niobocarbide

(mineralogy) An isometric-hexoctahedral mineral containing carbon, niobium, and tantalum.


natroniobite

(mineralogy) A monoclinic mineral containing niobium, oxygen, and sodium.


niobokupletskite

(mineralogy) A triclinic-pinacoidal mineral containing fluorine, hydrogen, iron, manganese, niobium, oxygen, potassium, silicon, sodium, titanium, zinc, and zirconium.


niobophyllite

For its composition of niobium, and Ancient Greek φύλλον (phúllon, “leaf”) for its foliated crystal habit, + -ite.

(mineralogy) A triclinic brown mineral containing fluorine, hydrogen, iron, manganese, niobium, oxygen, potassium, silicon, sodium, and titanium.


niocalite

Named for its composition of (NIO)bium and (CAL)cium, + -ite.

(mineralogy) A monoclinic-domatic light yellow mineral containing calcium, fluorine, niobium, oxygen, and silicon.


raslakite

Named after a Raslak Valley, a valley southwest of the type locality at Mt. Karnasurt, Northern Region, Russia
Raslak + -ite

(mineralogy) A trigonal-ditrigonal pyramidal brownish red mineral containing calcium, chlorine, hydrogen, iron, niobium, oxygen, silicon, sodium, and zirconium.


schiavinatoite

(mineralogy) A tetragonal-ditetragonal dipyramidal grayish pink mineral containing boron, niobium, oxygen, and tantalum.


simpsonite

(mineralogy) A trigonal-pyramidal mineral containing aluminum, hydrogen, niobium, oxygen, and tantalum.


rynersonite

(mineralogy) An orthorhombic-dipyramidal mineral containing calcium, niobium, oxygen, and tantalum.


columbate

en-noun

columbate (countable and uncountable, plural columbates)


dianium

From New Latin dianium, from Latin Diana; either as the name of the Roman goddess, or from its use in Old English as a name of silver.

(chemistry) (obsolete) niobium (although formerly thought as a distinct element)


columbic acid

(inorganic chemistry, archaic) niobic acid


niobic

(inorganic chemistry) Relating to niobium.


heptafluoroniobate

(inorganic chemistry) The anion NbF₇²⁻ or any salt containing this anion


niobocene

(organic chemistry) A metallocene containing a niobium atom.