FLINT NODULE - Northern France
« backNODULE OF FLINT
Précy-sur-Oise, Northern France
A fine example of a flint nodule from the Chalk of France. The label is included.
Flint is made of quartz, or silica, and was formed in soft, limy mud on the floor of the Chalk Sea some 80 million years ago. Over millions of years the mud containing the flint nodules was compacted to form chalk, which is the bedrock of much of Southern England and northern France.
The bizarre shapes of flint nodules are due to flint being formed within and around the burrows of creatures such as sea urchins. The shape of a flint nodule is therefore often the shape of the animal's burrow. Flint is black but with a white outer coating, or cortex.
Size: approx 16 x 13 x 9 centimetres
Weight: 1.23 kilograms
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