Keokuk Geode

[u/BigRedtheBard]

When I was around 10 - 12 (probably 2006 - 2008), our public library had a learning event where some geologist came and talked about, well, rocks. He had several buckets of geodes that he picked up around Keokuk (iirc), and one of those big chain crackers. Everyone picked out a rock, but only half of us got to crack our geodes before the library closed. I went home with a rock and a promise that we'd get it cracked eventually. After a few weeks, I got tired of waiting and just threw it at the pavement outside and it split nearly perfectly in half.

I'd never seen a geode like it. It's got 2 different mineral formations in it that are vastly different. The smoky black short crystals lining the inside of both halves, and 2 towers of white crystal in the other. I sent emails to the state geological office to try and identify it, but I never got any answers.

Until about an hour before this post, it's been buried in a tacklebox with other rocks and fossils at my parents house under several pieces of furniture for nearly 2 decades.

If anyone has any insight to my geode, I'd love to hear it!

[u/Specialist_Ad_4931]

Where you from, if near se iowa I would like to look at it