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Rocks and Minerals

Sedimentary rock formed by evaporation of salt water
Chalky sedimentary rock
The process in which dissolved minerals crystallize and glue particles of sediment together
The process that presses sediments together
A natural inorganic substance with a definite chemical makeup
To form or cause to form crystals
A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together
To break into a smooth surface
Source of most useful metals
The process in which sediments compact under pressure, fluids fill in between spaces of particles crystallize, and create rock by cementation
The most common igneous rock made from lava
Igneous rock that formed inside the earth
One of the simple substances, such as gold, iron, carbon, sulfur, oxygen and vapors
A slow process that recycles rocks
Common intrusive igneous rock
Bits of sand, rocks, shells, dirt
A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions
Made liquid by great heat
Are the preserved remains or traces of animals, plants and other organisms from the remote past
A type of rock that forms from the cooling of molten rock at or below the surface
Rounded rocks (pebbles, boulders) cemented together in a matrix
One of the softest minerals able to leave a mark
Igneous rock that formed outside of the earth
The smallest particle of an element
Ore found in deposits of sedimentary volcanic rocks
Small hard particles of stone