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Description: | Incomplete greenstone or epidiorite axe roughout, which will be petrologically analysed under the auspices of the Southwest Implement Petrology Committee.
The roughout is in the basic shape of a tear-shaped axe in plan, and is lozenge-shaped in profile and in section. There is a concentric groove that carries on around the width of the axe at an oblique angle, which was probably formed by wear if it was suspended as a weight. But many similar examples are turning up from the same field which suggests a possible local source or outcrop for this rock type. A chip of the butt end has been knocked off by the plough, revealing a dark black micaceous interior.
The greenstone is typical of that found in the west of Cornwall from known outcrops and contains pale felspars and dark amphibole, probably hornblende, inclusions (Dr. Roger Taylor pers comm). The roughout will hopefully still be cored and thin sectioned by Dr Jens Andersen at Camborne School of Mines so that its petrological group and potential source can be ascertained.
A similar examples has been excavated from the Neolithic settlement at Carn Brea and is illustrated in Mercer (1981) on page 155, Fig.64, No.S5. | Source: | Portable Antiquities | Creator: | Tyacke, Anna - Portable Antiquities Scheme | Identifier: | http://www.findsdatabase.org.uk/hms/pas_... | Language: | en-GB | Go to resource |
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