Breccia

BRECCIA (from the Italian word "Breccia" * EN: breccia; DE: Brekzie; FR: breche; ES: brecha; RU: брекчия) is the large-fragmented clastic rock, which is composed of the cemented sharp splinters of various rocks, with the size of more than 10 millimetres. The fragments, which are forming breccia, may be homogeneous and heterogeneous, differing sharply from the cement. There often exists within breccia the filling material. Depending on the sizes of the fragments, they distinguish the blocky (more than 1000 millimetres), large-, medium-, and small-lump (1000-100 millimetres), and large-, medium-, and small-rubble (100-10 millimetres) breccias. According to the genesis, they distinguish the sedimentary, karstic, chemical, volcanic, and tectonic breccias. Certain types of breccia serve as the prospecting indicator, which is pointing onto the possibility for the detection of the deposits with the useful minerals.