Graphite from Strathclyde, Scotland, UK
UK | |
| F. Rutley: "Elements of Mineralogy", 12th Ed. (1900) |
| Heddle, M.F., Goodchild, J.G. (1901) The mineralogy of Scotland. Edinburgh. 247 pgs (78). |
UK | |
| F. Rutley: "Elements of Mineralogy", 12th Ed. (1900) |
| Heddle, M.F., Goodchild, J.G. (1901) The mineralogy of Scotland. Edinburgh. 247 pgs (78). |