What is slate’s texture like?
Slate is a fine-grained, foliated, homogeneous metamorphic rock formed by low-grade regional metamorphism from an initial shale-type sedimentary rock consisting of clay or volcanic ash. It is the foliated metamorphic rock with the finest grain size.
What is the difference between shale and slate, and how do you tell the two apart?
Shale has a dark appearance, while slate shines and becomes silky in the sunlight. Moving on, shale, when treated with water, emits an odor similar to clay, whereas slate has no discernible odor. However, in some cases, it can smell like clay but with a very faint odor.
How strong is Slate?
Slate is rated between 2.5 and 4 on the hardness scale, which means it is nearly as hard as marble and limestone but not as hard as granite or natural quartz.
What are the characteristics of slate?
Slate is a foliated, fine-grained metamorphic rock with slaty cleavage. It is formed by low-grade metamorphism of sedimentary shale deposits and gets its color from the minerals found in the parent rock, shale.