| A | B |
|---|
| mineral | a natural occurring, inorganic solid that has a crystal structure and a definite chemical composition |
| inorganic | not formed from living things |
| crystal | the repeating pattern of a mineral's particles |
| hardness | measured by Moh's Hardness Scale |
| ore | a rock that contains a metal |
| gemstone | a hard, colorful mineral that had a brillant or glassy luster |
| alloy | a solid mixuure of two or more metals |
| vein | a narrow channel or slab of a mineral |
| fluorescence | minerals that glow under ultraviolet light |
| cleavage | the way a mineral splits along flat surfaces |
| fracture | how a mineral looks when it breaks apart |
| luster | how a mineral reflects light |
| streak | the color of a mineral's powder |
| color | an unreliable test in mineral identification |
| element | substance composed of a single kind of atom |
| cubic | halite and galena |
| hexagonal | quartz and corundum |
| smelting | the melting of ore to separate useful metal from other elements |
