Pyrrhotite from St Agnes, Cornwall, England, UK
UK | |
| Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro. Phillips, William (1823) An Elementary Introduction to Mineralogy (3rd ed.) |
Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro. |