![](https://coimages.sciencemuseumgroup.org.uk/711/82/large_thumbnail_2023_0467__0010_.jpg)
Iron pyrites, containing 2.18 per cent copper
- Made:
- 1858
- maker:
- Railway Clearing House
![Iron pyrites, containing 2](https://coimages.sciencemuseumgroup.org.uk/387/929/medium_smg00096340.jpg)
Iron pyrites, containing 2.18 per cent of copper, subjected to kernel roasting in Spain, 1858
Iron pyrites, containing 2.18 per cent of copper, subjected to kernel roasting in Spain, 1858