Hematite is the mineral form of iron (III) oxide, one of several iron oxides. Hematite crystallizes in the rhombohedra system, and it has the same crystal structure as limonite and corundum. Hematite and limonite form a complete solid solution at temperatures above 950 °C. It comes in various colours including black, grey, silver, brown, rust, reddish brown and red. The Red colour is usually associated with hematite for jewellery purposes, however black Hematite is sometimes referred to as a black Diamond.
| Content | Percentage |
|---|---|
| Fe3O4 [Fe Content] | 97% - 99.5% |
| Specific Gravity | 4.90 plus |
| Mesh Size | 45 Microns or 325 mesh passing 90% |
| Fe content | 68 - 70% |
