November 20, 2012
Rocks with Sparkle: How Do Geodes Form?
Kate Baggaley, Scienceline
Geodes are irresistible. They fill display cases and museums everywhere. I’ve even got one on my desk at home: a smooth, brownish rock encasing milky lavender crystals. It’s hard to deny the allure of a rock that is rugged and weathered on the outside, yet so sparkly and colorful on the inside.
But where do geodes actually come from?
TAGGED: crystals, geodes, rocks