Slate

: This pressure causes microscopic clay minerals to recrystallize and align in parallel planes perpendicular to the compression.

Slate is a fine-grained, foliated metamorphic rock formed through the low-grade metamorphism of shale or mudstone. It is highly valued for its durability, weather resistance, and its unique ability to be split into thin, flat sheets, a property known as "slaty cleavage". : This pressure causes microscopic clay minerals to

: Over millions of years, these sedimentary layers are subjected to intense heat and tectonic pressure. colors and uses - Dedalo Stone

Slate: characteristics, types, colors and uses - Dedalo Stone : This pressure causes microscopic clay minerals to