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17 Cards in this Set

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ore
a mineral that contains enough of a useful substance to be sold at a profit
gem
a mineral that can be cut and polished
crystal
a solid material that has atoms arranged in a repeating pattern
mineral
any solid, inorganic material
rock
solid, inorganic matter made up of two or more minerals
igneous rock
rock that is produced by melted rock that hardens
metamorphic rock
new rocks that form when existed rocks are heated or squeezed, NOT melted
sedimentary rock
rock formed from compressed sand, mud, or silt
basaltic
dark-colored rock, usually extrusive
granitic
light-colored rock, usually intrusive
lava
melted rock above Earth's surface
magma
melted rock below Earth's surface
extrusive
igneous rock that forms when melted rock cools above Earth's surface (lava)
intrusive
igneous rock that forms when melted rock hardens underneath Earth's surface (magma)
foliated
rocks that have visible layers or elongated grains of minerals
nonfoliated
rocks that do no have visible layers or elongated grains of minerals
rock cycle
a diagram that shows how rocks are related to one another and how they change from one type to another