http://www.the-jmcc.org/copper-rock/
Of the following, wich rocks are often the source of metal ores such as gold, silver, and copper.?
a. Igneous
b. Metamorphic
c. Sedimentary
d. Weathered
e. All of these are sources of metal ores.
I would say all of them. I certainly know that gold is mined from igneous, metamorphic and sedimentary rocks, and I believe copper is often found in weathered rocks.
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