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[[Image:geode.gif|right]]A '''geode''' [[Mineral Aggregates|mineral aggregate]] is a rounded, hollow [[nodule]], lined with [[crystals]], usually [[quartz]] or [[calcite]]. [[Amethyst]] is an example of a [[mineral]] exhibiting a geode form.<ref>Chesterman, Charles W. ''The Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf: New York (1987) p. 40</ref>

[[Image:geode.gif|right]]A '''geode''' [[Mineral Aggregates|mineral aggregate]] is a rounded, hollow [[nodule]], lined with [[crystals]], usually [[quartz]] or [[calcite]]. [[Amethyst]] is an example of a [[mineral]] exhibiting a geode form.<ref>Chesterman, Charles W. ''The Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf: New York (1987) p. 40</ref>

===Young Earth Creationist View===

==Young Earth Creationist View==

The secular explanation of geodes is that calcite concretions formed around decaying organic material, and that over thousands of years, these concentrations were replaced by quartz.  Since there has not been enough time since the creation of the Earth for this to happen, creation scientists theorize that geodes were created in their present form.

The secular explanation of geodes is that calcite concretions formed around decaying organic material, and that over thousands of years, these concentrations were replaced by quartz.  Since there has not been enough time since the creation of the Earth for this to happen, creation scientists theorize that geodes were created in their present form.