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| Description: Metamorphic Rocks In schist (a), generally formed from sedimentary rocks like shale or sandstone, crystals of new minerals such as biotite are oriented parallel to each other. This arrangement gives the rock a well-developed foliation. Picture Stats: Views: 463 Filesize: 359.03kB Height: 1066 Width: 1402 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=20727 |