铌铁矿

例句：

1. 1. The mine is rich in niobium ore, which is highly valued for its properties.
   这个矿富含铌矿石，因其特性而价值连城。
2. 2. The processing of niobium ore requires special techniques to ensure purity.
   铌矿石的处理需要特殊的技术来确保纯度。
3. 3. The discovery of new niobium ore deposits has sparked interest in the potential for futuremining operations.
   新发现的铌矿石矿床引发了对未来采矿活动潜力的兴趣。