All particles entrapped in this rock are greater than 0.08 inches (2 mm) in diameter. The inclusions are made of one rock type while the matrix (surrounding) material is made of another. Neither the matrix material nor the inclusions of this rock dissolve with acid. There are no fossils present in this rock. This rock does not taste salty.
rocksandminerals CC BY(4.0) via sketchfab
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