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Local Name(s): |
Cambridgeshire Clunch, Barrington Clunch. |
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Stone Group: | Sedimentary | ||||||
Stone Type: | Chalk | ||||||
Geology: |
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Geological Sub-Divisons: | Gault Clay. Grey Chalk. Lower Chalk. |
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General Colour Description: | A greyish white colour often with a greenish tinge. The latter due to the presence of glauconite, |
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Hand Specimen Description: | The stone is a fine grained, soft, well sorted limestone with a smooth feel. Its gritty texture is due to the presence of shell fragments (BRE: website). |
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General Comments: | 'Clunch' is a quarryman's term for hard, well cemented chalk. It is a generic term commonly used throughout Cambridgeshire to indicate a rock from the same geological outcrop but from different localities (Muir 1986: 174-6). |
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Stone Identifiers: | Calcareous,  Chalk. | ||||||
Reacts dilute to HCl? | Yes |