tantalite

There is high tantalite grade for certain large scale granite - pegmatite pattern tantalite - columbite mine in our country.

我国某大型花岗伟晶岩型铌钽矿含钽品位高居我国钽铌矿山之首.

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Eluvial tantalite: Eluvial tantalite is found in rubble consisting of fragments and pebbles of varied composition.

残积层钽铁矿: 残积层钽铁矿发现于由碎片和小鹅卵石成分的碎矿中.

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