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Pyroclastic rock From Wikipedia, the free encyclopedia
Cockercombe Tuff is a greenish-grey, hard pyroclastic rock, formed by the compression of volcanic ash containing high quantities of chlorite, which gives it its distinctive colour.[1][2] It is found almost exclusively in the south-eastern end of the Quantock Hills[3] near Cockercombe, Somerset, England, from where it has been quarried for centuries.
Quantock Lodge is built from Cockercombe tuff.[4][5]
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