The Pamphlet Collection of Sir Robert Stout: Volume 2
No. 443
No. 443.
This sample consists of anhydrous sesquioxide of iron, specular
iron ore, mixed with 30 per cent, of quartz and earthy matter. It yielded;—
Sesquioxide | 70 per cent |
Silica | 22 per cent |
Earthy matter | 8 per cent |
This is equal to 49 per cent of metallic iron. It is, therefore, if present in quantity, a valuable ore.