Rock Name

Chert

Creator

Preview

Color

Various, light gray, tan

Classification

Biogenic

Composition

silica (quartz)

Depositional Environment

Commonly form from remains of diatoms, which accumulate as a siliceous ooze

Comments

Varieties of chert include: flint, jasper, radiolarite, chalcedony, agate, onyx, and opal

Streaming Media