An ore of mercury, 3[HgS]
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Category: <span>C</span>
A rectangular wood plank used for levels in scaffolding
Small fragments of lava or smelter material around 1cm
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
The metamorphic processes which form coal
A carbonaceous rock formed through the alteration of plant remains, used as fuel