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Chert - Wikipedia
Chert is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). Chert is characteristically of biological origin, but may also occur inorganically as a chemical precipitate or a diagenetic replacement, as in petrified wood. … See more
In petrology, the term "chert" refers generally to all chemically precipitated sedimentary rocks composed primarily of microcrystalline, cryptocrystalline and microfibrous silica. Most cherts are nearly pure silica, with … See more
The cryptocrystalline nature of chert, combined with its above average ability to resist weathering, recrystallization and metamorphism has made it an ideal rock for preservation of … See more
There are numerous varieties of chert, classified based on their visible, microscopic and physical characteristics. Examples are: See more
• Photo & note re: Fig Tree Formation
• Microphotographs of Fig Tree fossils
• Schopf, J.W. (1999) Cradle of Life: The Discovery of Earth's Earliest Fossils, Princeton University Press, 336 p. ISBN 0-691-00230-4 See more• Petrology – Branch of geology that studies the formation, composition, distribution and structure of rocks
• Archaeology – Study of human activity via material culture See moreWikipedia text under CC-BY-SA license Mill Creek chert - Wikipedia
Mill Creek chert is a type of chert found in Southern Illinois and heavily exploited by members of the Mississippian culture (800 to 1600 CE). Artifacts made from this material are found in archaeological sites throughout the American Midwest and Southeast. It is named for a village and stream near the quarries, Mill Creek, Illinois and Mill Creek, a tributary of the Cache River. The chert was used exten…
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Chert Rock | Types, Properties, Composition, Formation, Uses
WEBApr 23, 2023 — Chert is a fine-grained sedimentary rock composed of quartz (SiO2) that is microcrystalline or cryptocrystalline quartz. It is usually organic rock but also occur …
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Gunflint chert - Wikipedia
WEBThe Gunflint chert (1.88 Ga [ 1]) is a sequence of banded iron formation rocks that are exposed in the Gunflint Range of northern Minnesota and northwestern Ontario along …
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Chert: Identification, Pictures & Info for Rockhounds - Rockhound …
Chert: Sedimentary Rock - Pictures, Definition, …
WEBChert is a rock composed of microcrystalline quartz, often with colorful inclusions. It was used for tools and weapons by early people and has various applications today.
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All About the Rock Called Chert - ThoughtCo
WEBNov 6, 2019 — Chert is a sedimentary rock composed of silica in microcrystalline or cryptocrystalline form, derived from siliceous ooze of plankton tests. Learn how chert is made, what it looks like, and what …
Chert and flint | Mineral, Sedimentary Rock | Britannica
WEBChert and flint, very fine-grained quartz (q.v.), a silica mineral with minor impurities. Several varieties are included under the general term chert: jasper, chalcedony, agate (qq.v.), flint, porcelanite, and novaculite. Flint …
Chert - Simple English Wikipedia, the free encyclopedia
WEBChert is a type of rock that includes flint and agate. It sometimes has fossils in it, usually shells. It is a sedimentary rock, and it is very hard. It is made from quartz. People used …
Chert
WEBChert (pronounced /ˈtʃɝt/) is a fine-grained silica -rich cryptocrystalline sedimentary rock that may contain small fossils.
Chert - New World Encyclopedia
WEBChert is a fine-grained, silica-rich, microcrystalline, cryptocrystalline or microfibrous sedimentary rock that may contain small fossils.
Radiolarite - Wikipedia
WEBRadiolarite is a siliceous, comparatively hard, fine-grained, chert -like, and homogeneous sedimentary rock that is composed predominantly of the microscopic remains of …
Chert Definition & Meaning - Merriam-Webster
WEBThe meaning of CHERT is a rock resembling flint and consisting essentially of a large amount of fibrous chalcedony with smaller amounts of cryptocrystalline quartz and …
The Quartz Page: Flint and Chert
WEBMar 13, 2022 — If a large body of rock is entirely made of dense, dull cryptocrystalline quartz, it is generally called chert, regardless of its color. Flint may show color banding, …
Chert - Wikiwand / articles
WEBChert is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). Chert is …
Rhynie chert - Wikipedia
WEBThe Rhynie chert is a Lower Devonian [1] sedimentary deposit exhibiting extraordinary fossil detail or completeness (a Lagerstätte). [2] It is exposed near the village of Rhynie, …
Chert | Geology Wiki | Fandom
WEBChert ( / ˈtʃɜr /) is a fine-grained silica -rich microcrystalline, cryptocrystalline or microfibrous sedimentary rock that may contain small fossils.
Chert - Wikipedia
WEBChert este o varietate de cuarț microcristalin găsită în calcar (silexul este o altă varietate, găsită în cretă), respectiv un subtip de silicolit. În vorbirea populară se mai numește și …
Category:Chert - Wikipedia
WEBCategories: Sedimentary rocks. Quartz varieties. Hidden category: Commons category link is on Wikidata.
Huntersville Chert - Wikipedia
WEBThe Huntersville Chert or Huntersville Formation is a Devonian geologic formation in the Appalachian region of the United States. It is primarily composed of mottled white, …
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