chert
Image credit: James St. John
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mineral precipitates
CaCO3
fossiliferous limestone coquina oolite travertine
limestone breccia micrite chalk
(Ca,Mg)(CO3)2 dolostone
Fe2O3 ironstone
clastic
conglomerate breccia sandstone shale
organic carbon
chert - Explore in 3D
Explore geologic features of chert in an archaeological artifact.
conchoidal fracture
concave surfaces
sharp edges
microcrystalline texture
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chert
Image credit: James St. John
Resources: chert
Image Galleries
Other Resources
Mindat.org: About chert
minerals and mining chert in Minerals Education Coalition