"Geode Cache" #1 Traditional Cache

Geodes are geological rock formations which occur in sedimentary and certain volcanic rocks. They look like regular rocks from the outside, the exterior typically made up of limestone, but then have crystal formations of quartz on the inside. You've probably heard of petrified wood, these are like petrified bubbles. They are sometimes referred to as thunder eggs by treasure hunters because they do resemble very large eggs because of their smooth exterior and round shape.

The real value of the geodes is their appearance when they are halved and polished. Their crystal formations typically come in a wide variety of colors, from deep purple to pink, blue, and even a silvery crystal color. The formations of the rock itself leave a wavy design in the color, and the crystals on the inside emit a fiery glow. It's often difficult to tell what's going to be inside geodes until you actually split them open, and usually they require some polishing in order for them to be at their full potential.

Geodes cannot be found everywhere. They are most common in Utah and Brazil. However, other areas including Indiana, Kentucky, Missouri, Nevada, New Jersey, New Mexico, Ohio, Oregon, Texas, and Iowa. Iowa designated the geode as the official state rock in 1967.

When searching for geodes it's best to have with you a reliable guide that maps out areas of the desert or certain cave formations where you may find them. I did notice a geode hunt event in Utah April of 2008 by ultimaterockhounds. They refer to geode hunting as the original geocache. Perhaps they will have another event soon.

If you attended the geode hunt event and/or if you have any small geodes laying around, feel free to leave them in the cache for others to enjoy.

Happy Treasure Hunting.