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- Chert - Wikipedia
Chert ( tʃ ɜːr t ) is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, [1] the mineral form of silicon dioxide (SiO 2) [2] Chert is characteristically of biological origin, but may also occur inorganically as a chemical precipitate or a diagenetic replacement, as in petrified wood [3]
- Chert Rock | Types, Properties, Composition, Formation, Uses
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
- Chert: Sedimentary Rock - Pictures, Definition, Formation
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
Chert 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 and flint | Mineral, Sedimentary Rock | Britannica
chert 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
- Chert: Formation, Types, Uses, and Care for this Sedimentary Rock
Explore the world of chert, a cryptocrystalline quartz rock valued for its historical significance in tool-making and its modern uses in construction, jewelry, and decorative arts Learn about its formation, types, and care in this comprehensive guide
- All About the Rock Called Chert - ThoughtCo
Chert is a sedimentary rock made of silica, mainly from the skeletons of tiny plankton This rock forms through slow transformations beginning with siliceous ooze going through lithification and diagenesis Chert is a tough rock that isn't transparent, often showing colors due to clay or organic matter
- Flint, Chert, and Jasper: Names for Microcrystalline Quartz
Flint, chert, and jasper are names commonly used by geologists and by the general public for opaque specimens of microcrystalline quartz The same hand specimen might be called "chert" by one person, "flint" by another, and "jasper" by a third
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