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Septarian Nodule

Septarian nodule from Ohio. The name septarian comes from many of the rocks having seven cracks. In these nodules the cracks are filled with calcite. Each specimen is about 5 cm across.

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Filename: septarian-iron-nodule_0082.jpg
Copyright: Ted Kinsman / Science Source Inc.
Image Size: 5760x3840 / 7.7MB; rock sedimentary rock rock formation rock formations sedimentary geology geologic concretion round spheres spherical septarian nodule septarian nodule cracks calcite septaria concretions angular cavities septarian concretions
Contained in galleries: science

Septarian nodule from Ohio. The name septarian comes from many of the rocks having seven cracks. In these nodules the cracks are filled with calcite. Each specimen is about 5 cm across.