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chert 音标拼音: [tʃ'ɚt]

XDict

n. 黑矽石,角岩

PyDict

黑矽石,角岩

WordNet (r) 3.0 (2006) (WordNet)

chert
n 1: variety of silica containing microcrystalline quartz

The Collaborative International Dictionary of English v.0.48 (gcide)

Hornstone \Horn"stone`\, n. (Min.)
A siliceous stone, a variety of quartz, closely resembling
flint, but more brittle; -- called also {chert}.
[1913 Webster]

Chert \Chert\ (ch[~e]rt), n. [Ir. ceart stone, perh. akin to E.
crag.] (Min.)
An impure, massive, flintlike quartz or hornstone, of a dull
color.
[1913 Webster]

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Chert - Wikipedia
Tripolitic chert (or tripoli) is a light-colored porous friable siliceous (largely chalcedonic) sedimentary rock, which results from the weathering (decalcification) of chert or siliceous limestone
How to Identify Chert - Geology In
Chert, a sedimentary rock primarily composed of microcrystalline quartz (silicon dioxide, SiO₂), is recognized for its durability and distinctive conchoidal fracture, properties historically crucial for tool-making
Chert: Sedimentary Rock - Pictures, Definition, Formation
What 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 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: 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 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
CHERT Definition Meaning - Merriam-Webster
The 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 amorphous silica
Where to Find Chert: Interactive Map Identification Guide
93 documented locations where chert can be found across the United States Use the interactive map below to filter by state or access type and find chert collecting sites near you
Oakland chert – Oakland Geology
The rock in this roadcut is chert: a hard, waxy-looking stone made from accumulations of microscopic diatom skeletons It ranges from white to brown to black, simple to complex
Chert - The More You Know, The Less You Know About Chert
Chert is a sedimentary rock composed of microcrystalline Quartz or cryptocrystalline Quartz, which is the mineral form of Silicone Dioxide Chert occurs as concretionary masses, nodules, and layered deposits

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