Chert is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz. A related silica variety found within the rock, chalcedony, is a microfibrous form of quartz. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Classification
Classification UseIndustrial and Abrasive 2 Wikipedia 'Chert' states this use (or use-bearing statement); earth5 pass. Formation ClassSedimentary, chemical (composed of microcrystalline or cryptocrystalline quartz) 1 Chert
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Associated With
Host rock: chert occurring within chalk is conventionally distinguished by the name flint.
Source Chert (Wikipedia)
Source Gunflint chert (Wikipedia)
Host rock: chert most commonly occurs as nodules within limestone.
Source Chert (Wikipedia)
Source Rhynie chert (Wikipedia)
Caused By
Source Chert (Wikipedia)
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Sources
1. Chert (Wikipedia)
Wikimedia FoundationLead section
a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz.
Lead section
Chert () is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2).
Associated With: Chalk, Lead section, occurrence sentence
Where chert occurs in chalk or marl, it is usually called flint.
Associated With: Limestone, Nodular chert section
Nodular chert is most common in limestone but may also be found in shales and sandstones.
Caused By: Sedimentation, Lead paragraph
Chert () is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2)
View the Source 2. Wikidata: Chert
Wikidata Q1070438
Gunflint chert (Wikipedia)
Associated With: Gunflint Chert, Lead paragraph
The Gunflint chert (1.88 Ga) is a sequence of banded iron formation rocks that are exposed in the Gunflint Range of northern Minnesota and northwestern Ontario along the north shore of Lake Superior.
Associated With: Gunflint Chert, Lead, rock Chert
The Gunflint Chert is of paleontological significance, as it contains evidence of microbial life from the Paleoproterozoic.
View the SourceRhynie chert (Wikipedia)
Associated With: Rhynie Chert, Lead, rock ChertQuote, Associated With: Rhynie Chert, Lead, rock Chert
The Rhynie chert is a Lower Devonian sedimentary deposit exhibiting extraordinary fossil detail or completeness (a Lagerstätte).
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