તે કાળો ખનિજ છે, નિઓબિયમ અને ધાતુ એક અયસ્ક છે,

columbite's Usage Examples:

Stoneham, Oxford County, Maine where it is associated with feldspar, smoky quartz, beryl and columbite.

Hermann and Kobell analysed the minerals tantalite and columbite to better understand the chemistry of niobium and tantalum.

and when there is more niobium than tantalum is it called columbite (or niobite).

By the 1940s, Nigeria was a major producer of tin, columbite, and coal.

, Hamza, and Habonimana but the production of columbite-tantalite ore decreased considerably to 23,356 kg in 2004 from 72,441 kg.

Tantalum, always together with the chemically similar niobium, occurs in the mineral groups tantalite, columbite and coltan (the latter.

niobite, niobite-tantalite and columbate Tantalite, a mineral group close to columbite Coltan, a mixture of columbite and tantalite Galaxite, a spinel.

It occurs in association with columbite, zircon, monazite, uraninite, aeschynite, magnetite, albite, topaz, beryl, garnet, muscovite and biotite.

The niobium-dominant mineral in coltan is columbite (after niobium"s original American name columbium), and the tantalum-dominant.

Ferrocolumbite (synonym of columbite-(Fe)) Ferrotantalite (synonym of tantalite-(Fe)) Fluorspar (synonym of fluorite) Francolite (variety of fluorapatite).

Associated minerals include quartz, feldspar, spodumene, amblygonite, tourmaline, columbite, cassiterite, topaz and beryl.

sedimentary basins, as well as reserves of gold, lead, zinc, tantalite, columbite, coal and tin.

mineral Columbite, also called niobite, niobite-tantalite and columbate Tantalite, a mineral group close to columbite Coltan, a mixture of columbite and tantalite.

Synonyms:

niobium, atomic number 73, Ta, atomic number 41, niobite, mineral, Nb, tantalum,

Antonyms:

organic,