Unfortunately, you still have three possibilities. If the rock has a slightly silky sheen and fair to poor rock cleavage CLICK HERE. If the rock shows excellent rock cleavage (flat surfaces) and has a dull sheen CLICK HERE. The third fine-grained foliated metamorphic rock has grooves or striations on its surface and can be quite hard/dense. If your rock fits this description, CLICK HERE. If no description fits your rock, Go Back to the previous step.
| Silky sheen, fair rock cleavage, often gray | Muscovite or chlorite may be bearly discernable | Click Here |
| Dull luster, excellent rock cleavage, various colors | No minerals visible | Click Here |
| Shiny luster, with obvious striations or grooves, hard and dense | Quartz is common, but often not visible | Click Here |
| BACK TO STEP 2|
| METAMORPHIC ROCK TEXTURES | METAMORPHIC ROCK CLASSIFICATION |