A mineral consisting of tantalum oxide of iron and manganese that occurs with niobite or in coarse granite; an ore of tantalum.

  • 一种由铁和锰的钽氧化物组成的矿物,与铌铁矿共生,亦见于粗糙的花岗岩中,是一种钽矿石。

  • 互联网摘选 2025-01-20 19:06:54

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