Shale, slate, dry slate, schist, gneiss, how to distinguish?
slate like a board, the slice is relatively thick
Shale and slate distinction is very simple. Shale, as the name suggests, like the page of a page, each piece is thin, can easily tear
Slate can be used as building materials and decorative materials, ancient in the area rich in slate commonly used in tiles. Slate generally do not contain minerals.
The thickness of the leaf of the schist is between the slate and the shale, and the thickness of the rock is generally below 1 cm and above 0.2 mm
