Rocks for Geology Education

Showing all stones commonly used for geology education

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sedimentary

Conglomerate is a coarse-grained sedimentary rock made of rounded clasts bound by a matrix. It forms in high-energy environments like rivers.

metamorphic

Phyllite is a fine-grained metamorphic rock with a silky sheen, formed from slate. It bridges the gap between slate and schist in metamorphic grade.