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ELATERITE (NATURAL BITUMEN) - Derbyshire

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Home > MINERALS > MINERALS FROM BRITAIN AND IRELAND FOR COLLECTORS > NORTHERN AND CENTRAL ENGLAND

 
ELATERITE
(Natural bitumen)


Windy Knoll Quarry, Castleton, Derbyshire
 
Hydrocarbons, or natural bitumens, occur in Derbyshire in a variety of forms; usually they are soft, elastic or sticky, but occasionally they can be hard and brittle. Elaterite is the name given to a soft variety of bitumen that occurs at Windy Knoll Quarry.
 
These hydrocarbons originated from the soft parts of fossil marine organisms by distillation of the organic matter – the starting point for oil generation. This process was aided by the heat of magma injected into the adjacent rocks.
 
Also included with the elaterite are curious, hard, shiny pieces of the hydrocarbon mineral bernalite (formerly called olefinite) which occurred with the elaterite at Windy Knoll.

These specimens are part of an old university collection. Due to the oily nature of the elaterite it has been sealed in a plastic box. The bernalite specimens are contained in a small glass bottle with a cork stopper. Both are provided in a vintage museum display box with a glass lid. 

Please note: The disused quarry at Windy Knoll is of international importance for these rare bitumen deposits and is regarded as unique in Britain. It is part of a designated Site of Special Scientific Interest (SSSI) and collecting is no longer permitted.

 
Click on a picture for a larger image

Size:  7 x 5 x 3.5 centimetres (size of box) (plastic elaterite box: 4 x 3 x 2 centimetres)
Weight: approx. 70 grams (total weight)


PRICE: £27.00