| Size of Crystals/Options | Texture/Formation Method | Example |
| Small Crystals | |
| How is it formed? #1) Extrusively #2) Intrusively #3) Both | |
| Large Crystals | |
| How is it formed? #1) Extrusively #2) Intrusively #3) Both | |
| Tiny Crystals | |
| How is it formed? #1) Extrusively, fastest cooling #2) Extrusively and Intrusively #3) Extrusively, with gas pockets | |
| Many Small Pockets, Small Crystals | |
| How is it formed? #1) Very fast cooling #2) Gas bubbles in a runnier lava #3) Gas bubbles in a thicker lava | |
| Small Crystals, Some Larger Pockets | |
| How is it formed? #1) Very fast cooling #2) Gas bubbles in a runnier lava #3) Gas bubbles in a thicker lava | |
| Some Small Crystals and Some Large Crystals | |
| How is it formed? #1) Intrusively #2) Extrusively #3) Both | |