| Back | Main Details | Rocks | Usage | References |
| Books | Websites |
| Bignell, E. (2002) | ||
|---|---|---|
| Natural Stone Directory: No. 13, 2002-2003. | ||
| Stone Industries (1993) | ||
|---|---|---|
| Natural Stone Directory, No. 9, 1994-1995. | ||
| Watson, J. (1911) | ||
|---|---|---|
| British and Foreign Building Stones: A Catalogue of the Specimens in the Sedgwick Museum, Cambridge | ||
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