| NOUN | substance | coltan, columbite-tantalite | a valuable black mineral combining niobite and tantalite |
|---|
| Meaning | A valuable black mineral combining niobite and tantalite; used in cell phones and computer chips. | |
|---|---|---|
| Synonym | columbite-tantalite | |
| Broader | mineral | Solid homogeneous inorganic substances occurring in nature having a definite chemical composition |
| Spanish | coltan, columbita-tantalita | |
| Catalan | coltan, columbita-tantalita | |
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