| A | B |
|---|
| describes the way a mineral reflects light from its surface | luster |
| physical property of some minerals that cause them to break along smooth, flat surfaces | cleavage |
| physical property of some minerals that cuase them to break with uneven, rough, or jagged surfaces | fracture |
| solid in which the atoms are arranged in an orderly, repeating pattern | crystal |
| a hard, colorful mineral that has a brilliant or glassy luster and is valued for its appearance | gemstone |
| a naturally occurring, inorganic solid that has a crystal structure and a definite chemical compostion | mineral |
| not formed from living things or the remains of living things | inorganic |
| the color of a mineral's powder | streak |
| a scale ranking ten minerals from softest to hardest; used in testing the hardness of minerals | Mohs hardness scale |
| a hollow rock inside which mineral crystals have grown | geode |
| the process by which atoms are arraanged to form a material with a crystal structure | crystallization |
| a mixture in which one substance is dissolved in another | solution |
| a narrow deposit of a mineral that is sharply different from the surrounding rock | vein |
| rock that contains a metal or other economically useful mineral | ore |
| the process by which ore is melted to separate the useful metal from other elements | smelting |
| a solid mixture of two or more elements, at least one of which is a metal | alloy |
