crystalline schist

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• Schist — The schists constitute a group of medium grade metamorphic rocks, chiefly notable for the preponderance of lamellar minerals such as micas, chlorite, talc, hornblende, graphite, and others. Quartz often occurs in drawn out grains to such an… …   Wikipedia

• Schist — (sh[i^]st), n. [Gr. ? divided, divisible, fr. ? to divide: cf. F. schiste. See {Schism}.] (Geol.) Any crystalline rock having a foliated structure (see {Foliation}) and hence admitting of ready division into slabs or slates. The common kinds are… …   The Collaborative International Dictionary of English

• schist — /shist/, n. any of a class of crystalline metamorphic rocks whose constituent mineral grains have a more or less parallel or foliated arrangement. [1775 85; < NL schistus, L (lapis) schistos < Gk schistós divided, curdled, divisible, deriv. of… …   Universalium

• crystalline rock — Any rock composed entirely of crystallized minerals without glassy matter (matter without visible crystals). Intrusive igneous rocks (see intrusive rock) are nearly always crystalline; extrusive igneous rocks (see extrusive rock) may be partly to …   Universalium

• schist —   n. foliated metamorphic crystalline rock.    ♦ schistaceous, a. slate coloured.    ♦ schistic,    ♦ schistose, a.    ♦ schistoid, a. like schist.    ♦ schistosis, n. fibrosis of lungs from inhaling slate dust …   Dictionary of difficult words

• schist — noun Etymology: French schiste, from Latin schistos (lapis), literally, fissile stone, from Greek schistos that may be split, from schizein Date: circa 1782 a metamorphic crystalline rock that has a closely foliated structure and can be split… …   New Collegiate Dictionary

• schist — noun Any crystalline rock having a foliated structure and hence admitting of ready division into slabs or slates …   Wiktionary

• schist — ʃɪst n. any metamorphic crystalline rock that can be easily split into layers …   English contemporary dictionary

• schist — [[t]ʃɪst[/t]] n. pet any of a class of crystalline metamorphic rocks whose constituent mineral grains have a more or less parallel or foliated arrangement • Etymology: 1775–85; < NL schistus, L (lapis) schistos < Gk schistós divided,… …   From formal English to slang

• schist — /ʃɪst / (say shist) noun any of a class of crystalline rocks whose constituent minerals have a more or less parallel or foliated arrangement, due mostly to metamorphic action. {French schiste, from Latin schistos fissile, readily splitting, from… …  

• Bündner schist — The Bündner schist or Bündner slate (German: Bündnerschiefer ; French: schistes lustrés ) is a collective name for schistose rocks that form a number of geologic formations in the Penninic nappes of the Alps. Bündner schists were originally… …   Wikipedia