page_title: List of rock types
section_title: Metamorphic rocks
hierarchical_section_title: List of rock types / Metamorphic rocks
caption_attribution_description: English: Marble Nederlands: een onbewerkt stukje marmer Português: Mármore Slovenščina: Kos marmorja. Bosanski: Komadić mramora.
context_page_description: The following is a list of rock types recognized by geologists. There is no agreed number of specific types of rocks. Any unique combination of chemical composition, mineralogy, grain size, texture, or other distinguishing characteristics can describe a rock type. Additionally, different classification systems exist for each major type of rock. There are three major types of rock: igneous rock, metamorphic rock, and sedimentary rock.
context_section_description: Anthracite – A hard, compact variety of coal that has a submetallic luster
  Amphibolite – A metamorphic rock containing mainly amphibole and plagioclase
  Blueschist – A metavolcanic rock that forms by the metamorphism of basalt and rocks with similar composition
  Cataclasite – A rock formed by faulting
  Eclogite – A dense, mafic metamorphic rock
  Gneiss – A common high-grade metamorphic rock
  Granulite – A class of high-grade medium to coarse grained metamorphic rocks
  Greenschist – A mafic metamorphic rock dominated by green amphiboles
  Hornfels – A series of contact metamorphic rocks that have been baked and indurated by the heat of intrusive igneous masses
  Calcflinta – A type of hornfels found in the Scottish Highlands
  Litchfieldite – Nepheline syenite gneiss
  Marble – Non-foliated metamorphic rock commonly used for sculpture and as a building material – a metamorphosed limestone
  Migmatite – A mixture of metamorphic rock and igneous rock
  Mylonite – A metamorphic rock formed by shearing
  Metapelite – A metamorphic rock with a protolith of clay-rich (siltstone) sedimentary rock
  Metapsammite – A metamorphic rock with a protolith of quartz-rich (sandstone) sedimentary rock
  Phyllite – A low grade metamorphic rock composed mostly of micaceous minerals
  Pseudotachylite – A glass formed by melting within a fault via friction
  Quartzite – A metamorphosed sandstone typically composed of >95% quartz
  Schist – Medium grade metamorphic rock with lamellar grain
  Serpentinite – rock formed by hydration and metamorphic transformation of olivine
  Skarn – Hard, coarse-grained, hydrothermally altered metamorphic rocks
  Slate – A fine-grained, foliated, homogeneous, weakly metamorphic rock - A low grade metamorphic rock formed from shale or silts
  Suevite – A rock formed by partial melting during a meteorite impact
  Talc carbonate – A metamorphosed ultramafic rock with talc as an essential constituent; similar to a serpentinite
  Soapstone – Essentially a talc schist
  Tectonite – A rock whose fabric reflects the history of its deformation
  Whiteschist – A high pressure metamorphic rock containing talc and kyanite
caption: Marble
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