Sedimentary Lab

Breccia

This rock is detrital with its main grain being gravel. Its depositional environment is river beds. It has visible rock combinations.

Chalk

This rock is chemical with its main mineral being calcite. Its depositional environment is deep oceans. It is white and powdery and leaves residue on your hands.

Rock Salt

This rock is chemical with its main mineral being halite. Its depositional environment is near beaches. It comes in various colors and grain size. It tastes salty.

Coquina

This rock is chemical with its main mineral being calcite. Its depositional environment is near beaches. It is flaky looking and looks like a bunch of shells pushed together.

Arkose

This rock is detrital with its main grain being gravel. Its depositional environment is river beds. It is red and rough and made of granite.

Conglomerate

This rock is detrital with its main grain being gravel. Its depositional environment is river beds. It is a combination of large and small rocks and is gold/yellow in color.

Shale

This rock is detrital with its main grain being mud. Its depositional environment is deep oceans. It looks dark an flat with many layers; very thin.

Quartz Sandstone

This rock is detrital with its main grain being sand. Its depositional environment is near beaches. It is light in color with many small holes; looks like pressed sand.

Chert

This rock is chemical with its main mineral being quartz. Its depositional environment are deep oceans. It can scratch glass and looks plastic-like.

Bituminous coal

This rock is chemical with its main mineral being plant fragments. Its depositional environment is swamps. It looks black and shiny; it isn’t dense.

Fossiliferous limestone

This rock is chemical with its main mineral being calcite. Its depositional environment are marine-like environments. It looks plastic-like.