Share this entry

Share this page

columbite

Syllabification: co·lum·bite
Pronunciation: /ˈkäləmˌbīt
 
/

Definition of columbite in English:

noun

A black mineral, typically occurring as dense, tabular crystals, consisting of an oxide of iron, manganese, niobium, and tantalum. It is the chief ore of niobium.
Example sentences
  • The abundance of these elements in the parental magma leads to the formation of less-common minerals such as apatite, beryl, topaz, amblygonite, lepidolite, spodumene tantalite, columbite, monazite, zircon, and uraninite.
  • It occurs most commonly in the minerals columbite, tantalite, and microlite.
  • These minerals are columbite, microlite, futile, thorite, and zircon.

Origin

early 19th century: from columbium + -ite1.

Definition of columbite in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day verbose
Pronunciation: vəːˈbəʊs
adjective
using more words than are needed…