The most common and most likely answer to this crossword clue is the 7 letter word NIOBIUM which also is the latest solution we found used in New York Times in 1999.
Its principal ore is columbite crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters |
|---|---|---|
| NIOBIUM | 100 % | 7 |
Words with a meaning similar to the clue: Its principal ore is columbite
These words may or may not be a possible solution to this crosswords clue.- galena
- bauxite
- cinnabar
- tantalite
- native
- metal
- haematite
- molybdenite
- hematite
- pentlandite
- cassiterite
- chalcopyrite
Crossword Answer definitions
NIOBIUM noun- A chemical element (symbol Nb) with an atomic number of 41: a light grey, crystalline, ductile transition metal used in superconducting materials.
- A single atom of this element.
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution