| Foliated: Visible bands | Non-Foliated: No Bands | |
| Gneiss: From Granite | Quartzite: From Sandstone | |
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Metamorphic
rocks tend
to be more dense than the rocks the came from. |
 |
| Gniess has thick light & dark bands | Quartzite contains quartz, hardness = 7 | |
| * | * | |
| Schist: This Sample Has Mica | Marble: From Limestone | |
 |
Regional
Metamorphism covers large areas and is more intense.
Contact Metamorphism covers less area and is less drastic. |
 |
| Schist has thin wavy bands | Marble contains calcite = fizzes in acid | |
| * | * | |
| Slate: From Shale |  |
|
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| Slate is very-fine with microscopic bands | ||
