Fine
Powder-range quartz for fillers, coatings and fine mixes. SiO₂ 99.00% minimum.
Low-iron, sub-angular quartz from Türkiye, the largest foreign source of quartz for U.S. manufacturers. Fine, medium and coarse fractions from 63 µm to 2.5 mm, supplied by the container or in bulk against an agreed specification.
Powder-range quartz for fillers, coatings and fine mixes. SiO₂ 99.00% minimum.
Sand-range grit with very low iron: Fe₂O₃ between 0.005 and 0.015%.
Granule-range quartz with the lowest iron of the three: Fe₂O₃ 0.010% at most.
Chemical composition by fraction, in weight per cent.
| Oxide | Fine 63–212 µm |
Medium 300–700 µm |
Coarse 1200–2500 µm |
|---|---|---|---|
| SiO₂, minimum | 99.00 | 98.43 | 98.09 |
| Fe₂O₃ | 0.008 – 0.200 | 0.005 – 0.015 | 0.005 – 0.010 |
| Al₂O₃ | 0.010 – 1.000 | 0.780 – 0.920 | 0.600 – 1.100 |
| TiO₂ | 0.020 – 0.090 | 0.005 – 0.015 | 0.005 – 0.015 |
| CaO | 0.050 – 0.075 | 0.020 – 0.025 | 0.020 – 0.040 |
| MgO | 0.002 – 0.008 | 0.005 – 0.010 | 0.005 – 0.010 |
| Na₂O | 0.300 max | 0.450 – 0.550 | 0.450 – 0.700 |
| K₂O | 0.030 – 0.050 | 0.010 – 0.015 | 0.010 – 0.015 |
| Loss on ignition | 0.150 – 0.300 | 0.150 – 0.200 | 0.150 – 0.200 |
Density 2.65 g/cm³. Sub-angular grain. Melting point 1610 °C. CAS No. 14808-60-7. HTS 2506.10.
Producer's specification ranges. The analysis of your lot is sent with the sample and again with each shipment. Custom fractions and tighter iron limits can be quoted against volume.