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Minerals
| Term | Definition |
|---|---|
| minerals | a naturally occurring solid that has a crystal structure and is made up of elements. |
| luster | a term used to describe how light is reflected from a mineral's surface |
| streak | the color of a mineral's powder. |
| hardness | how easily a mineral can be scratched |
| Moh's Scale | a scale that rank's ten minerals from softest to hardest. |
| fracture | describes how a mineral looks when it breaks apart in an irregular way. |
| cleavage | a mineral that splits easily along flat surfaces has this property |
| inorganic | not formed from living things or the remains of living things. |