There is high tantalite grade for certain large scale granite - pegmatite pattern tantalite - columbite mine in our country.
我國某大型花崗偉晶巖型鈮鉭礦含鉭品位高居我國鉭鈮礦山之首.
互聯(lián)網(wǎng)
Eluvial tantalite: Eluvial tantalite is found in rubble consisting of fragments and pebbles of varied composition.
殘積層鉭鐵礦: 殘積層鉭鐵礦發(fā)現(xiàn)于由碎片和小鵝卵石成分的碎礦中.
互聯(lián)網(wǎng)