File:Slate_(Knife_Lake_Formation,_metamorphism_at_2.7_Ga,_Neoarchean;_Rt._135_roadcut,_Gilbert,_Minnesota,_USA)_3_(23140002749).jpg · Wikimedia Commons · See Wikimedia Commons
หินชนวน
Sign in to saveSlate is a fine-grained, foliated, homogeneous, metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade, regional metamorphism. It is the finest-grained foliated metamorphic rock. Foliation may not correspond to the original sedimentary layering, but instead is in planes perpendicular to the direction of metamorphic compression.
Slate is a metamorphic rock formed when clay-rich sedimentary rocks are subjected to heat and pressure deep underground, resulting in a fine-grained stone with natural layering planes. It matters because its unique properties—particularly its ability to split into thin, flat sheets—make it useful for roofing, flooring, and other practical applications.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Rock.name
- Slate
- Rock.type
- Metamorphic
- Rock.type_link
- Metamorphic Rock
- Rock.image
- Slate (Knife Lake Formation, metamorphism at 2.7 Ga, Neoarchean; Rt. 135 roadcut, Gilbert, Minnesota, USA) 3 (23140002749).jpg
- Rock.caption
- Slate of the Knife Lake Formation in Minnesota
- Rock.composition
- quartz, muscovite/illite
- Rock.composition_secondary
- biotite, chlorite, hematite, pyrite Specific gravity: 2.7 – 2.8,2.9
via Wikipedia infobox
Wikidata facts
- Instance of
- stone
- Subclass of
- schistose rock
- Image
- St Fagans Tannery 7.jpg
- Has use
- writing surface
Show 7 more facts
- narrower external class
- purl.org/heritagedata/schemes/eh_tbm/concepts/97716
- topic's main category
- Category:Slate
- Commons category
- Slate
- described by source
- Encyclopædia Britannica 11th edition
- different from
- crystalline schist
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- P8168
- Dover
via Wikidata · CC0