Answer: scisto
Schist. Schist is a strongly foliated medium-grade metamorphic rock. It is characterized by an abundance of platy or elongated minerals (micas chlorite talc graphite amphiboles) in a preferred orientation. Varieties of this rock type share similarities in appearance (schistosity) but may be highly variable in composition.
Schist definition is - a metamorphic crystalline rock that has a closely foliated structure and can be split along approximately parallel planes.
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Un schiste est une roche qui a pour particularité d'avoir un aspect feuilleté et de se débiter en plaques fines ou « feuillet rocheux ». On dit qu'elle présente une schistosité. Il peut s'agir d'une roche sédimentaire argileuse ou bien d'une roche métamorphique. Quand celle-ci est purement sédimentaire les géologues préfèrent ...
schist. (shĭst) n. Any of various medium-grained to coarse-grained metamorphic rocks composed of laminated often flaky parallel layers of chiefly micaceous minerals. [French schiste from Latin (lapis) schistos fissile (stone) a kind of iron ore from Greek skhistos split divisible from skhizein to split; see skei- in Indo-European roots .]
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