Rocks and Minerals Science Notes

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sedimentary

examples

shate

chert

limestone

chalk

sandstone

properties

obvious layers

obvious grains

how these rocks are formed

sediment settles over time and are cemented together forming distinct layers. a new layer get deposited over the one before.

Metamorphic

examples

Marble

Jasper

Gneiss

Properties

they all have distorted mineral/crystals

How these rocks are formed

Sedimentary or Igneous are exposed to intense heat and pressure which changes the original rock into a new tpye of rock.

Igneous

examples

often have different minerals

obvious crystals

how these rocks are formed

igneous rocks are formed when magma or lava cools and solidifies.

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