Description

Mini Clear Quartz Geodes – A geode is a sphere shaped rock which contains a hollow cavity lined with crystals. A geode which is completely filled with small compact crystal formations is called a nodule. The only difference between a geode and a nodule is that a geode has a hollow cavity, and a nodule is solid. The term geode is derived from the Greek word Geoides which means “earthlike.” Geodes begin as bubbles in volcanic rock or as animal burrows, tree roots or mud balls in sedimentary rock.

Over time, the outer shell of the spherical shape hardens, and water containing silica precipitation forms on the inside walls of the hollow cavity within the geode. The silica precipitation can contain any variety of dissolved minerals.

Over a period of thousands of years, layers of silica cool, forming crystals of different minerals within the cavity. Different types of silica cool at varying temperatures, thus creating layers of different types of mineral crystals. Each is unique

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