Transactions of the Royal Geological Society of Cornwall, Vol.4 p484 - 485
| Notice of Pseudomorphous Crystals of Oxide of Tin found in Head Coates Mine, in St Agnes in the year 1828, Stephen Davy, IV: 484-485. |
| Notice of Pseudomorphous Crystals of Oxide of Tin found in Head Coates Mine, in St Agnes in the year 1828, Stephen Davy, IV: 484-485. |