![](https://coimages.sciencemuseumgroup.org.uk/711/82/medium_thumbnail_2023_0467__0010_.jpg)
Series of experiments on the production of silicified iron from hard red haematite containing finely divided quartz
- Made:
- before 1889
![Series of experiments on the production of silicified iron from](https://coimages.sciencemuseumgroup.org.uk/400/334/medium_smg00095345.jpg)
Series of experiments on the production of silicified iron from hard red haematite containing finely divided quartz, experiments by R. Smith