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Septarian Polished Slice

Madagascar

$27.00

or 4 interest free payments of $6.75 withlearn more
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This Septarian Nodule polished face, also called Septarian or Septerye. Has been polished both sides.

A Septarian Nodule is a tri-colour concretion made up of Aragonite (brown), Calcite (yellow) (If any) and Limestone (grey). The name comes from the word ‘Septeria’. This normally refers to a concretion with internal cavities and cracks.
This Septarian Nodule was formed 50-70 million years ago during the Earths Cretaceous Period. Sea life during that time became attracted to the molten sediment that was produced by massive volcanic eruptions. Over time, as the sea life began to die, their chemical composition became enriched in sedimentary rock, forming the nodules we see today. As oceans begin to recede around the world the water within soon dried out and massive cracks formed. The chemicals within the dead sea life eventually crystallized and formed Aragonite ‘Crusts’ and drusy calcite crystals. 


Approximate measurements
10.3cm x 7.5cm x .9cm
160grams

SKU: BTX226 TAGS: Septarian, Nodule, Polished, face
 

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