| A | B |
|---|
| Rock | 2 or more minerals |
| Mineral | Inorganic, solid material found in nature (has crystal structure) |
| Detrital | Classified by grain size |
| Chemical | Mineral-rich sea water evaporates |
| Organic | rock made from organisms that were once alive |
| Igneous | Melted rock that cooled & hardened |
| Metamorphic | "change of form" - new rock from old rock (Heat & Presure) |
| Sedimentary | Made from sediments that were deposited and cemented together |
| Fissure | large crack in the Earth's surface |
| Batholith | large, intrusive igneous rock body that cools underground and then forced to the surface |
| Intrusive | Rock created from magma - large mineral crystals |
| Extrusive | made from lava - small mineral crystal |
| Gem | Rare minerals that can be cut and polished |
| Ore | Mineral that contains enough useful substance it can be sold for profit |
| Smelting | the process that removes the unwanted materials from ores |
| Luster | how light reflects off a mineral - texture |
| Hardness | a measure of how easy it is to scratch a mineral |
| Streak | color of powder a mineral leaves behind |
| Specific Gravity | comparison between the weight of a mineral and the weight of an equal volume of water |
| Foliated | rock that contains leafy mineral grains that all point the same direction |
