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chert
(c̸hʉrt)
noun
an extremely dense type of quartz, including jasper and flint, having a dull, opaque luster and made up of microscopic crystals
Origin: < ?
See chert in American Heritage Dictionary 4
noun
- A variety of silica that contains microcrystalline quartz.
- A siliceous rock of chalcedonic or opaline silica occurring in limestone.
Origin:
Origin: Origin unknown
.Related Forms:
- chertˈy adjective
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