Slate is a fine-grained, low-grade metamorphic rock. It has interlocking crystals (too small to be seen) in bands parallel with each other, which can be broken into sheets (cleavage).
Locality - Ballachulish slate quarry, Scotland
© Kim Traynor, geograph 2937594 cc-by-sa/2.0
Hand specimen |
Locality |
Rock in use |
Close-up |
Thin section p-polars |
Thin section x-polars |