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lingqiu yinan coal miner

Bornite: Bornite mineral information and data.

Important copper ore. Typically found as massive metallic material, it has a copper-red color on fresh exposures which quickly tarnishes to an iridescent purple after ...

Copper: Copper mineral information and data.

<M>Copper Group</M>. Copper was one of the first metals to be worked into implements and the first metal to be smelted from ores. Its excellent ductility and …

RL Equipments

RD Equipments