The crystals have abundant room to grow in their hollow surroundings also the crystals can form very easily in many places.
Because they can take long to form resulting in a large crystal well-formed. And also remeber fast forming Crystal =small, slow forming Crystal =large
no
nut
Thunder Eggs are rocks containing crystals inside them. This is what makes them geodes.
Geode has crystals in the cente and sometimes has openings in the center. Agate is solid through and does not have crystals. Ocos is mini Geodes
Because they can take long to form resulting in a large crystal well-formed. And also remeber fast forming Crystal =small, slow forming Crystal =large
Geodes are rock cavities with internal crystal formations, usually made of quartz crystals. Some geodes are completely solid because they are filled with crystals. These are called "nodules". Geodes can form in gas bubbles in igneous rock, or in rounded cavities in sedimentary rock. Most geodes contain clear or white quartz crystals, but purple amethyst crystals are also common.
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== == It depends on what's inside. Large amethyst geodes can go for thousands. Baseball sized geodes with non-spectacular quartz or calcite crystals can be purchased for $4-$12. Geodes with uncommon minerals that are sold on mineral auction sites range in price from $30-$500. Golf ball sized geodes, uncracked, are sold for about $2 at shows.
Geodes
Geodes are secondary structures that occur in sedimentary and igneous rocks. Geodes are hallow on the insde. They are spherical to oblate in shape. Most contain clear crystals, though some may contain colored crystals. Geodes are common in the U.S. states of Indiana, Iowa, Missouri, Kentucky and Utah, and the countries Mexico, Brazil, and Namibia.
Geodes are often lined with quartz.
nut
Thunder Eggs are rocks containing crystals inside them. This is what makes them geodes.
the only place i have found them in illiinois is inside of geodes.
everything from called to crystals is your predicate.
Geode has crystals in the cente and sometimes has openings in the center. Agate is solid through and does not have crystals. Ocos is mini Geodes