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.
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Eluvial tantalite: Eluvial tantalite is found in rubble consisting of fragments and pebbles of varied composition.
殘積層鉭鐵礦: 殘積層鉭鐵礦發現于由碎片和小鵝卵石成分的碎礦中.
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