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Earth's Materials

chapter 4.7 - 4.9

TermDefinition
Solid in which all the atoms are arranged in a regular, repeating pattern. crystal
Naturally occurring inorganic, crystalline solid with a characteristic chemical composition. mineral
used as a reference for mineral hardness Mohs Hardness Scale
Tendency of a mineral to break along certain planes to make smooth surfaces. cleavage
Amount of matter in a certain amount of space; mass divided by volume. density
Way a mineral breaks when it is not broken along a cleavage plane. fracture
Ability of a mineral to resist scratching hardness
Way light reflects off of the surface of the mineral. luster
How heavy a mineral is relative to the same volume of water. specific gravity
Color of the mineral’s powder. streak
Molten rock inside Earth’s crust. magma
Minerals that cooled from a fluid and filled cracks in a rock. vein
Molten rock that has reached Earth’s surface. lava
Created by: kkalnin
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