harder slate

Is Slate Harder Than Shale? Slate is more durable as compared to Shale. Slate is stronger than Shale as it undergoes metamorphosis while weathering rocks. Slates are costly compared to Shale due to their durability. Is slate the same as shale? Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary