What in the dickens are eggshells made out of?

Here is your answer.

Roughly 95% calcium carbonate, though.

Welcome to the collective. :)

And more importantly, what the hell is a dickens?

I lurve Dickens.

@AstroChuck. A Dickens is a literary genius responsible for treasures such as Great Expectations, A Tale of Two Cities, and David Copperfield, just to name a few. :o)

Yeah, but what does Charles Dickens have to do with eggshells?

@AstroChuck. I’m working on that. Let me get back to you.

Thinking Dickens needs a punch in the… well, you know ;)

Dick-ens are male chickens, duh!

@Baloo72 Lovely way of answering a google-able question with full respect. Lurve to you!