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Morenci has been mined for over 150 years. Most of its copper never sees a smelter: acid trickles through heaps of crushed ore and the metal is plated straight out of solution.
品位。 Low grade, made economic by leaching rather than smelting most of the ore.
"品位"是指有用成分在矿石中所占的百分比。一座品位为0.5%的铜矿，每产出一吨铜就需丢弃199吨废石。这一个数字，决定了一个矿体究竟是可开采的矿山，还是仅具地质意义的有趣岩石。
产出内容
Copper
The reddish metal that carries electricity better than anything except silver, and which humans have been smelting…
Molybdenum
A silvery metal added to steel so it keeps its strength at high temperature and under pressure.
"副产品"是指因与主矿种赋存于同一岩体而被回收的金属，并非专门勘探的目标。因此，其供应量受主矿种经济性驱动，而非自身供需关系。
所有权归属
| 企业 | 角色 | 关注度 |
|---|---|---|
| Freeport-McMoRan | Miner | Majority owner-operator |
数据均为运营商公开披露。大型矿山的所有权时有变动；在引用前请以最新公司申报文件核实。