| Back | Main Details | Samples & Images | Quarries | Usage | References |
| Local Name(s): | Cheesewring Granite. |
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| Stone Group: | Igneous | ||||||
| Stone Type: | Granite | ||||||
| Geology: |
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| General Colour Description: | Silver grey to light grey. A pink variety can also be found here (Clifton-Taylor & Simmons 1987: 150). |
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| Hand Specimen Description: | A very hard, muscovite biotite granite which is coarse grained, crystalline and porphyritic. It is poorly sorted with a hackly fracture. |
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| Petrographic Description: | A muscovite biotite granite comprising quartz, perthitic orthoclase, plagioclase feldspar, biotite and muscovite mica. Accessory minerals include tourmaline, zircon, apatite, cordierite and andalusite. |
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| General Comments: | It is difficult to identify the different types of granite from the south-west of England macroscopically. |
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| Stone Identifiers: | Porphyritic. | ||||||
| Reacts dilute to HCl? | No | ||||||
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