Rock Name
Preview
![image preview](https://ecommons.udayton.edu/geo_sedimentary/1001/preview.jpg)
Color
Various, light gray, tan
Classification
Biogenic
Composition
silica (quartz)
Depositional Environment
Commonly form from remains of diatoms, which accumulate as a siliceous ooze
COinS
Comments
Varieties of chert include: flint, jasper, radiolarite, chalcedony, agate, onyx, and opal