Fine-grained flaky rock composed of hydrous aluminum silicates.
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Category: <span>C</span>
Sedimentary rocks comprised of minerals, rocks and organic materials from scattered sources
A porous tool designed to separate particles of a certain size
Separation of particles or material by size
Filtration of suspended sediments
A parcel of land designated or created to assign title for mining purposes
Timbers of concrete supporting a shaft opening
An ore of mercury, 3[HgS]
A rectangular wood plank used for levels in scaffolding
Small fragments of lava or smelter material around 1cm