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Earth's Materials
chapter 4.7 - 4.9
Term | Definition |
---|---|
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 |