In this chapter, they discuss the difference between opals and shells, the formation of opals and chalk, and address the question of how shells become limestone.
Bones. Shells. Reefs. Teeth. Biomineralogy. The wonderful UCLA geochemist Rob Ulrich answers a giant pile of questions such as: How do crystalline structures materialize out of thin air and water? How do squishy animals make such hard shells? What’s the difference between a shell and an exoskeleton? What’s the noise you hear when you listen to a seashell? What’s up with ocean acidification? How do you keep a fiddle leaf tree alive? How do you meet new friends without battling LA traffic? Start by becoming virtual BFFs with this -ologist, who is shella cool...