What percentage of purity must silver have before it can considered economically valuable?

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By "economically valuable," I mean usable for purposes other than as jewelry.

If an ore is found that contains silver in about 1,000 ounces per ton it can be mined with a profit.

2007-03-23 17:14:11 · answer #1 · answered by David A 5 · 1⤊ 0⤋

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2007-03-23 21:40:36 · answer #2 · answered by Sweetchicky292 @ 2 · 0⤊ 2⤋