Argillaceous Shale Specimen, Pack of 12

Details

Shale is formed through the cementation and lithification of very small grains of rock, commonly mud or clay. The small clast size indicates that although the grains had been heavily eroded, the rock was formed in a low-energy environment. Shale is useful for sedimentary rock identification exercises due to its recognizable fissile habit. This product includes a pack of 12.