Small fragments of lava or smelter material around 1cm
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Category: <span>C</span>
Ore broken by hand or small tools
A channel, tunnel, gate or opening purpose-built for moving ore
A silver-gray, metallic element. Symbol, Co
An isometric metallic mineral, Cr
Large grains of Gold
Sedimentary rock consisting of rounded pebbles cemented into a solid mass
A crushing machine using a tapered gyrating cylinder revolving on its axis within an outer chamber
A compacted mass of mineral matter
A hardened rock-like mixture of sand or gravel, water, and Portland cement