Within the United States, geode maps identify areas of the Midwest such as Illinois, Iowa, and Missouri as well as areas in the Southeast such as Kentucky, Tennessee, and South Carolina as common geode locations. Geode maps identify Brazil, Namibia, Uruguay, Mexico as top areas around the world where geodes are located. [2] X Research source
Geodes are often formed in stratified sedimentary carbonate deposits such as limestones and dolomites. Stratified volcanic deposits such as basalt and tuffs rocks also lead to geode formation.
Even if you are scouting for geodes on public land, it might be protected by a nature preserve, which would mean you might not be permitted to remove natural items from the property.
Sharp, pointy rocks rarely contain geodes.
The texture of a geode’s exterior may have a cauliflower-like appearance. Inspect the surface for any signs of minerals inside. Sometimes traces of the inside crystals are visible on the surface.
You can also shake the rock next to your ear to test whether it is hollow. You may hear small pieces of rock or crystal rattling around inside if it is hollow.
Make sure to wear safety goggles while trying to open the geode. If you do not want to attempt to open the geode yourself, you can also take it to a rock or gem store to have it opened for you.
Mineral keys describe the mineral’s habit, which refers to its key characteristics and features.
Polishing your geode will bring out the most in its beauty. You can also coat your geode with mineral oil to increase its luster.