Noun:

கொலம்பைற்று,

columbite's Usage Examples:

Columbium compounds are usually prepared by fusing columbite with an excess of acid potassium sulphate, boiling out the fused mass with much water, and removing tin and tungsten from the residue by digestion with ammonium sulphide, any iron present being simultaneously converted into ferrous sulphide.

These elements occur in the minerals columbite and tantalite, and their compounds became known in the early part of the 19th century by the labours of C.

It is usually found associated with tantalum, the chief minerals containing these two elements being tantalite, columbite, fergusonite and yttrotantalite; it is also a constituent of pyrochlor, euxenite and samarskite.

Rose detected two new elements in the columbites of the Bodenmais, which he named niobium and pelopium; dianium was discovered by W.

Hatchett in a specimen of columbite (niobite) from Massachusetts (Phil.

Columbium pentoxide (columbic acid), Cb205, is obtained from columbite, after the removal of tantalum (see above).

von Kobell in various columbites; and ilmenium and neptunium were discovered by R.

Synonyms:

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

Antonyms:

organic,