Chert - Wikipedia
WEBChert (/ ˈ tʃ ɜːr t /) is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO 2). Chert is characteristically of biological origin, but may also occur inorganically as a chemical precipitate or a diagenetic replacement, as in petrified wood.
Chert: Sedimentary Rock - Pictures, Definition, Formation
WEBWhat is Chert? Chert is a sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO 2 ). It occurs as nodules, concretionary masses, and as layered deposits. Chert breaks with a conchoidal fracture, often producing very sharp edges.
Chert: Identification, Pictures & Info for Rockhounds
WEBChert is a biochemical sedimentary rock made from microcrystalline quartz. It is very hard – registering a 7 on the Mohs hardness scale, and displays conchoidal fracturing. Chert can almost any color, but is usually gray, brown, red, or green. It has many subvarieties including flint, jasper, agate, and onyx.
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 inorganically as a chemical precipitate or a diagenetic replacement. It occurs as nodules, concretionary masses, and as layered deposits.
All About the Rock Called Chert - ThoughtCo
WEBUpdated on November 06, 2019. Chert is the name for a widespread type of sedimentary rock that is made of silica (silicon dioxide or SiO 2 ). The most familiar silica mineral is quartz in microscopic or even invisible crystals; that is, microcrystalline or cryptocrystalline quartz. Learn more about how it is made and find out what it is made of.
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 is gray to black and nearly opaque (translucent brown in thin splinters) because of included carbonaceous matter ...
7.4.7: Chert - Geosciences LibreTexts
WEBAug 28, 2022 · Chert is a fine-grained (microcrystalline) variety of quartz. It is also the name given to rock composed primarily of fine-grained quartz. So, the name is used in two ways. Chert (the silica mineral kind) may be massive or layered. It is often in nodules or concretions in limestone.
Chert - Sedimentary Rocks - Sandatlas
WEBChert is a hard and compact sedimentary rock, consisting dominantly of very small quartz crystals. It is a common rock type which occurs mostly in carbonate rocks either in nodular form or in layers (bedded chert). Flint on the coast at Stevns Klint in Denmark.
Flint, Chert, and Jasper: Names for Microcrystalline Quartz - Geology.com
WEBFlint, chert, and jasper are a few of the many names used for microcrystalline quartz. These names are not systematically used. Instead, their use is often based upon the background of the person speaking, the geologic occurrence of the material, the properties of the material, and any historic use of the material.
Chert Definition & Meaning - Merriam-Webster
WEBJan 26, 2024 · noun. ˈchərt ˈchat. : a rock resembling flint and consisting essentially of a large amount of fibrous chalcedony with smaller amounts of cryptocrystalline quartz and amorphous silica. cherty. ˈchər-tē. ˈcha- adjective. Examples of chert in a Sentence.
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