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The era following the Mesozoic Era, known as the Era of Mammals

A tool used to cut or chip rock having chisel-shaped cutting edge at its tip

Any calcined mixtures of clay and limestone, usually mixed with water, and gravel and/or sand

Sampling deposit by the removal of a small chip of material

A void or hole

Microcrystalline to cryptocrystalline sedimentary rock composed of interlocking quartz crystals

The identifiable property of minerals to split along their crystallographic planes

Fine-grained flaky rock composed of hydrous aluminum silicates.

Sedimentary rocks comprised of minerals, rocks and organic materials from scattered sources

A porous tool designed to separate particles of a certain size