Definition
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Etymology
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Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation
From French schiste, Greek skhistos i.e. split
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material
From Italian, literally gravel, Germanic origin and related to break
Coarse Grained Rock, Medium Grained Rock, Opaque Rock