Stone in Archaeology Database

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There are three types of Barnack Stone. Firstly, the most common type - Barnack Rag which, although hard, shelly and coarse grained could be worked into an ashlar. Secondly a limited depost of a fine textured oolitic freestone which was suitable for carving. Thirdly, a hard walling stone obtainable in rather thin beds and mainly used for hammer dressed rubblestone walling. (Clifton-Taylor & Simmons 1987: 79 -80).