M MineralystRock & Mineral Guide
Rock

Breccia

Breccia — reference photo

Breccia is a rock. It has a Mohs hardness of Variable (depends on the composition of the clasts) and typically dull, may have some shiny clasts luster.

Breccia properties

TypeRock
Mohs hardnessVariable (depends on the composition of the clasts)
LusterTypically dull, may have some shiny clasts
Typical colorsCan be varied; often red, brown, gray, or other colors depending on the matrix and clasts
FormationForms through the accumulation and cementation of angular fragments, typically from violent sedimentary processes
Rarity4 / 10
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