black ore deposit 黑矿型矿床
black iron ore 磁铁矿 ; 黑铁矿
black lead ore 黑铅矿
black band iron carbonate ore 黑泥碳酸铁矿
black copper ore 黑铜矿
black silver ore [矿物] 脆银矿
black-lead ore 碳酸铅矿
black-band iron-ore [矿物] 黑菱铁矿
black k iron ore 磁铁矿
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A black mineral that is an ore of niobium and '.
一种黑色矿物，是铌、钽矿石。
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Ore prospect should be directed to PGE deposits both related to Emeishan basalt and black shale sequence.
要同时重视找寻与峨嵋山玄武岩有关和与黑色岩系有关的两类铂族矿床。
A black mineral is an ore of niobium and tantalum.
一种黑色矿物是铌、钽矿石。
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