由于目前商品级的矿石可能用完，富集过程是重要的。

A concentration process is important now that the depletion of high grade ores is possible.

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因此，对于矿石的富集人们做了更多的努力。

Hence more effort was directed to beneficiate the ores.

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矿床中高度富集铜和金的矿石是韧性剪切形成的矿石糜棱岩受退变质流体叠加而成。

Oreshoots highly enriched in copper and gold in the deposit were actually ore mylonite formed by ductile shearing and subsequent fluid overprinting.

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