SEPTARIA (SECTION OF A VERY LARGE WHOLE NODULE) - Norfolk
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Cut and polished section through a whole septarian nodule - a particularly beautiful example from the UK
Downham Market, Norfolk
Septarian nodules, or 'septaria' are remarkable natural objects. They are round concretions containing a network of internal cracks that have been filled with minerals, particularly brown and yellow calcite.
The cracks are called ‘septa’ from the Latin word septum or ‘partition’, which gives the nodules their name. Exactly how these nodules were formed is still not fully understood.
Septarian nodules can be very beautiful. This example is a cut and polished section of a whole nodule that originated in the Kimmeridge Clay of Jurassic age.
Note: This item weighs 8 kilograms.
Click on a picture for a larger image
Size: 30 x 25 x 8 centimetres
Weight: 8 kilograms
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