What is the called “green garnet sand”
The called “Green Garnet Sand” and garnet sand have the following commons:
1.Application:sandblasting and waterjet cutting
2,Origin:underground
3,Appearance:grain,just there is green particles in it
4:Normal production sizes:20-40mesh 30-60mesh 80mesh
But the called”green garnet sand” is different from garnet sand in fact,it is Omphacite,and with different specification with garnet sand,exactly as follows:
Chemical Composition
| SiO2 | 54-58% |
| Fe2O3+FeO | 3-5% |
| Al2O3 | 12-14% |
| MgO | 5-7% |
| CaO | 8-11% |
| MnO | 0-1% |
| Na2O | 6-8% |
Physical characteristic
| Specific Gravity | 3.29-3.37g/cm3 |
| Mohs Hardness | 6.6-6.8 |
| Chloride content | ＜15ppm |
| Colour | Green |
| Acid solubility(HCL) | ＜1% |
| Conductivity | ＜25 ms/m |
| Melting point | 1100℃ |
| Grain shape | sub angular |
Mineralogical Composition
| Omphacite | >85% |
| Almandite Garnet | <15% |
| Ilmenite | <0.5% |
| TiO2 | <0.5% |
