John Cancalosi / Cross-Section of Utah Septarian Nodule, Utah. A type of geode, Utah Septarian Nodules are found about 15 miles east of Zion National park. They were formed in an ancient sea floor during the Cretaceou...
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John Cancalosi / Cross section of a Septarian nodule, Morrocco.
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John Cancalosi / Septarian nodule Calcite in clay, Sahara Desert, Morocco
