정의
The niobium mineral of carbonatite deposits, and the reason niobium supply is so geographically concentrated.
이 소재에서 나오는 물질
| 소재 | 역할 | 품위 참고사항 |
|---|---|---|
| Niobium | Principal ore | — |
광석 광물
The niobium mineral of carbonatite deposits, and the reason niobium supply is so geographically concentrated.
The niobium mineral of carbonatite deposits, and the reason niobium supply is so geographically concentrated.
| 소재 | 역할 | 품위 참고사항 |
|---|---|---|
| Niobium | Principal ore | — |