rock, crushed rock, and gravel
coal is a valuble rock mined in Indiana
Ore is a three letter word and is a mineral that contains metal that is valuable enough to be mined.
a three letter word ore
Three metals that are mined in Argentina are gold, silver, and copper.
A valuable rock is a gem.
you play minecraft
Diamond
Rock salt
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Rock material mined for its constituent elements or minerals is called "ore."
coal.