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Rocks and Minerals
Chapter 3 Vocab
Question | Answer |
---|---|
Cleavage | Physical Property of some minerals that causes them to break along smooth,flat surfaces |
Crystal | Solid in which the atoms are arranged in an orderly,repeating system |
Fracture | Physical Property of some minerals that causes them to break with uneven,rough, or jagged surfaces |
Gem | Beautiful,rare,highly prized mineral that can be worn in jewelry |
Hardness | Measure of how easily a mineral can be scratched;is determined by the arrangement of the mineral's atoms |
Luster | Describes the way a mineral reflects light from its surface; can either be metallic or nonmetallic |
Magma | hot,melted rock mineral beneath Earth's Surface |
Mineral | Naturally occurring inorganic solid that has a definite chemical composition and an orderly internal atomic structure |
Ore | Deposit in which a mineral exists in a large enough amounts to mined at a profit. |
silicate | Mineral that contains silicon and oxygen and usually one or more other elements |
Specific Gravity | Ratio of a mineral's weight compared with the weight of a equal volume of water. |
Streak | color of a mineral when it is in powdered form. |