Slate-faced church and homes in Wurzbach, Thuringia, Germany
https://en.wikipedia.org/wiki/Slate#Slate_in_buildings
Slate was the traditional material of choice for black Go stones in Japan. It is now considered to be a luxury.[36]
John Betjeman's grave with inscription on slate in Cornwall
Leonard Bramer, painting Mors Triumphans (oil on slate)
"Slate Cone" in Royal Botanic Garden Edinburgh
https://en.wikipedia.org/wiki/Slate#Slate_in_buildings
Exhibition Slate mine at Fell, Germany
https://en.wikipedia.org/wiki/Slate#Slate_in_buildings
Workers mining slate at Mintaro quarry, c. 1880
https://en.wikipedia.org/wiki/Slate#Slate_in_buildings
Slate is found in the Arctic, and was used by Inuit to make the blades for ulus.
https://en.wikipedia.org/wiki/Slate#Slate_in_buildings
Schist (/ˈʃɪst/ SHIST) is a medium-grained metamorphic rock showing pronounced schistosity. This means that the rock is composed of mineral grains easily seen with a low-power hand lens, oriented in such a way that the rock is easily split into thin flakes or plates. This texture reflects a high content of platy minerals, such as micas, talc, chlorite, or graphite. These are often interleaved with more granular minerals, such as feldspar or quartz.
Schist typically forms during regional metamorphism accompanying the process of mountain building (orogeny) and usually reflects a medium grade of metamorphism. Schist can form from many different kinds of rocks, including sedimentary rocks such as mudstones and igneous rocks such as tuffs. Schist metamorphosed from mudstone is particularly common and is often very rich in mica (a mica schist). Where the type of the original rock (the protolith) is discernible, the schist is usually given a name reflecting its protolith, such as schistose metasandstone. Otherwise, the names of the constituent minerals will be included in the rock name, such as quartz-felspar-biotite schist.
Schist bedrock can pose a challenge for civil engineering because of its pronounced planes of weakness.
https://en.wikipedia.org/wiki/Schist
https://en.wikipedia.org/wiki/Reptile#Systems
https://en.wikipedia.org/wiki/Sea_urchin
https://en.wikipedia.org/wiki/Tube_feet
https://en.wikipedia.org/wiki/Asphalt_roll_roofing
https://en.wikipedia.org/wiki/Framing_(construction)
https://en.wikipedia.org/wiki/Sarking
https://en.wikipedia.org/wiki/Asbestos_shingle
https://en.wikipedia.org/wiki/Asphalt_shingle
https://en.wikipedia.org/wiki/Fell_Exhibition_Slate_Mine
https://en.wikipedia.org/wiki/Lithophone#Stone_marimba
https://en.wikipedia.org/wiki/Headstone
https://en.wikipedia.org/wiki/Chlorite_group
https://en.wikipedia.org/wiki/Dimension_stone
https://en.wikipedia.org/wiki/Stone_slab
https://en.wikipedia.org/wiki/Ledger_stone
https://en.wikipedia.org/wiki/Cotehele
https://en.wikipedia.org/wiki/Mandsaur_stone_inscription_of_Yashodharman-Vishnuvardhana
Mandsaur stone inscription of Yashodharman-Vishnuvardhana
https://en.wikipedia.org/wiki/Shades_of_gray
https://en.wikipedia.org/wiki/Quarry
https://en.wikipedia.org/wiki/Blackboard
https://en.wikipedia.org/wiki/Slate_(writing)
https://en.wikipedia.org/wiki/Slate_industry
https://en.wikipedia.org/wiki/Slate_waggon
https://en.wikipedia.org/wiki/Flexible_stone_veneer
https://en.wikipedia.org/wiki/Rag-stone
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