All particles entrapped in this rock are greater than 0.08 inches (2 mm) in diameter. The inclusions are made of different rock types than the matrix (surrounding) material is made of another. Some of the inclusions in this rock do dissolve with acid. There are no fossils present in this rock. This rock does not taste salty.
Ignore back. Untextured portion not rock.
M. Dudek CC BYNC(4.0) via sketchfab [https://creativecommons.org/licenses/by-nc/4.0/legalcode]