Geode - Wikipedia A geode ( ˈdʒiː oʊd ; from Ancient Greek γεώδης (geṓdēs) 'earthlike') is a geological secondary formation within sedimentary and volcanic rocks Geodes are hollow, vaguely spherical rocks, in which masses of mineral matter (which may include crystals) are secluded
What Are Geodes and Where Can You Find Them? - HowStuffWorks Geodes are geological formations characterized by their spherical shapes and hollow interiors, often lined with colorful crystals Derived from the Greek word geoides, which means "earthlike," these unique structures catch the eye of scientists and gem enthusiasts alike
Geodes: The rocks with a crystal surprise inside! - Geology. com Geodes are spherical to subspherical rock structures with an internal cavity lined with mineral materials They have a durable outer wall that is more resistant to weathering than the surrounding bedrock This allows the geode to survive intact when the surrounding bedrock weathers away
Facts About Geodes - Sciencing Geodes are hollow rocks lined with crystals, often colorful and irregularly shaped The outer shell of a geode is usually bumpy or rough, and the general shape tends to be spherical or oblong Geode crystals are made of minerals and are often composed of quartz
How To Find Geodes! The Ultimate Guide + (Fun Facts About Geodes) Simply speaking, geodes are hollow rocks that contain an insanely beautiful array of crystal formations inside And depending on the minerals that make up the geode, different geodes will contain different kinds of crystals, such as amethyst, agate and quartz
Geode | Crystals, Formation Structure | Britannica geode, hollow mineral body found in limestones and some shales The common form is a slightly flattened globe ranging in diameter from 2 5 to more than 30 cm (1 to 12 inches) and containing a chalcedony layer surrounding an inner lining of crystals
13 Fascinating Facts About Geodes - Grunge Geodes, in a nutshell, are hollow stones filled with glistening crystals, and some can be extremely eye-catching Most often, they form with simple quartz crystals, clear and colorless, but under the right conditions, virtually any kind of crystal can theoretically grow inside a geode