| A | B |
|---|
| Gems | very valuable minerals |
| Mineral | naturaly formed solid with crystalline structure |
| Elements | pure substances |
| Atom | the smallest part of an element |
| compounds | minerals combined (ex. salt=sodium and cloride) |
| Crystals | solid, geometric forms of minerals that repeat |
| Crystalline Structure | each mineral has a specific one of these |
| Silicate Minerals | made up of silicon and oxygen |
| Nonsilicate Minerals | do not contain silicon and oxygen |
| Luster | the way a surface reflects light |
| Streak | the color or a mineral in it's powered form |
| Fracture | is the tendancy of some minerals to break along flat surfaces |
| Hardness | is the minerals resistance to being sctrached |
| Density | is the measure of how much matter there is in a given amount of space |
| Ore | describes a mineral deposits large enough and pure enough to make a profit |
| Reclimation | one way to reduce the harmful effects of mining to the land |
