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SEPTARIA (POLISHED SECTION OF A NODULE) - Norfolk

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SEPTARIA
Cut and polished section of a septarian nodule

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. 

This example is a cut and polished piece of a nodule that originated in the Kimmeridge Clay of Jurassic age.

Click on a picture for a larger image

Size:  15 x 11 x 3 centimetres
Weight:  780 grams
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Optional metal stand

PRICE: £30.00