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2. Sandstone - Wikipedia

   en.wikipedia.org/wiki/Sandstone

   Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains, cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks. [1] Most sandstone is composed of quartz or feldspar, because they are the most resistant minerals to the weathering processes at the Earth's ...

3. List of sandstones - Wikipedia

   en.wikipedia.org/wiki/List_of_sandstones

   Bäch Sandstone: by the Lake Zürich; Bern Sandstone: quarry sites near Bern in Ostermundigen, Krauchthal and by the Gurten; Bollingen Sandstone (also Buchberg Sandstone, Uznaberg Sandstone, Bollinger-Lehholz Sandstone and Güntliweid Sandstone): Rapperswil-Jona by the Upper Lake Zürich; Grès à cailloux roulés: near Avenches; Grès de ...

4. List of U.S. state minerals, rocks, stones and gemstones

   en.wikipedia.org/wiki/List_of_U.S._state...

   Sandstone (1987) Precious Gemstone: Virgin Valley black fire opal (1987) Semiprecious Gemstone: Nevada turquoise (1987) New Hampshire [48] Beryl (1985) Granite (1985); New Hampshire's nickname is the Granite State: Smoky quartz (1985) New Jersey [49] Franklinite [50] New Mexico [51] Turquoise (1967) New York [52] Garnet (1969) North Carolina ...

5. List of rock types - Wikipedia

   en.wikipedia.org/wiki/List_of_rock_types

   Ganister – Hard, fine-grained quartzose sandstone, or orthoquartzite; Gossan – Intensely oxidized, weathered or decomposed rock; Hyaloclastite – Volcaniclastic accumulation or breccia; Ijolite – Igneous rock consisting essentially of nepheline and augite; Jadeitite – Metamorphic rock found in blueschist-grade metamorphic terranes

6. Navajo Sandstone - Wikipedia

   en.wikipedia.org/wiki/Navajo_Sandstone

   The Navajo Sandstone is a geological formation in the Glen Canyon Group that is spread across the U.S. states of southern Nevada, northern Arizona, northwest Colorado, and Utah as part of the Colorado Plateau province of the United States.

7. New Red Sandstone - Wikipedia

   en.wikipedia.org/wiki/New_Red_Sandstone

   Exeter, Devon, ancient city walls of Isca Dumnoniorum with medieval and Roman elements. The New Red Sandstone, chiefly in British geology, is composed of beds of red sandstone and associated rocks laid down throughout the Permian (300 million years ago) to the end of the Triassic (about 200 million years ago), that underlie the Jurassic-Triassic age Penarth Group. [1]