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minerals and rocks

mar chapter 2

TermDefinition
mineral A naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition.
inorganic Not formed from living things or the remains
crystal A solid in which atoms are arranged in a pattern that repeats over and over again
streak The color of a minerals powder
luster The way a mineral reflects light from its surface
Mohs hardness scale A scale ranking ten minerals from softest to hardest
cleavage A mineral's ability to split easily along flat surfaces
fracture A way a mineral looks when it beaks apart in an irregular way
geode A hollow rock inside which mineral crystals have grown.
Crystallization The process by which atoms are arranged to form a material with a crystal structure
solution A mixture containing a solvent and at least one solute that has same properties throughout
vein A narrow deposit of a mineral that is sharply different from the surrounding rock
Rock-forming mineral Any of the common minerals that makes up most of the rocks
granite A usually light-colored igneous rock that is found in continental crust
basalt A dark, dense, igneous rock with a fine texture, found in oceanic crust.
grains The particles of minerals or other rocks that give a rock its texture
texture The look and feel of a rocks shape, size, and pattern
Igneous rock A type of rock that forms from the cooling of molten rock at or below the surface
Sedimentary rock A type of rock that forms when the remains of plants and animals are pressed together
Metamorphic rock A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions
Extrusive rock Igneous rock that forms from lava
Intrusive rock Igneous rock that forms when magma hardens beneath Earth's surface
Created by: user-1975087
 

 



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