| GIC Abrasive garnet is almandite variety with composition of 3FeO, Al2O3, 3SiO2 | |||
| Physical Characteristics | Chemical Composition | ||
| Hardness (Mohs) | 7.5 to 8 | Al2O3 | 21.60% |
| Chloride | 10-20 ppm (Max 25ppm) | SiO2 | 31.00% |
| pH | > 7 | FeO | 37.00% |
| Bulk Density | 2.34 T / m3 | MgO | 7.40% |
| Specific gravity | 4.1 | CaO | 1.84% |
| Melting point | 12600C | TiO2 | 0.55% |
| Grain shape | Sub-angular | MnO | 0.53% |
| Other Characteristics | Mineral Composition | ||
| Conductivity | 10-15ms/m (Max 20ms/m) | Garnet | 97 – 99% |
| Radioactivity | Not detectable | Ilmenite | < 2% |
| Moisture absorption | Non-hydroscopic | Quartz | < 1% |
| Free Iron | < 0.01% | ||
| Copper | < 0.01% | ||
| Sulphur | < 0.01% | ||
| Other heavy metals | < 0.01% | ||