Geologist believe that The crystals inside a geode probably form when...

A: Lava suddenly cools on earth’s surface
B: Minerals dissolved in a solution evaporate
C: Minerals dissolved in a solution crystallize
D: magma cools slowly inside Earth

Ok so I’m Almost positive that it’s C but I really want to make sure

3 answers

I agree.

http://www.rocksandminerals4u.com/geodes.html

Ty Ms Sue!!!!

You are welcome.