How Are Amethyst Geodes Formed?
Intro to Amethyst Geodes Not even scientists are 100 percent sure exactly how amethyst geodes form–or how any geodes form. There hasn’t been much research, because geodes are just fun scientific anomalies with little, if any, scientific benefits. They’re rocks that seem plain on the outside but when opened reveal a cavity in the middle filled with beautiful crystals. The general scientific consensus is that amethyst geodes are created in a two-step process. First, there’s the formation of the cavity and then the formation of the crystals. Gas Cavities Form An amethyst geode is a hollow rock with amethyst crystals lining the inner walls, so first the cavity must be formed. This can happen anywhere there is or was lava close to the earth’s surface. As a result, amethyst geodes can be found in thousands of places around the globe. The first step in the natural process that creates amethyst geodes is the formation of gas cavities in lava. The gas cavities can form from bubbles (just like
