| 2503.00 | 000 | Sulphur of all kinds, other than sublimed sulphur, precipitated sulphur and colloidal sulphur |
| 25.04 | | Natural graphite |
| 2504.10 | 000 | In powder or in flakes |
| 25.05 | | Natural sands of all kinds, whether or not coloured, other than metal-bearing sands of Chapter 26 |
| 2505.10 | 000 | Silica sands and quartz sands |
| 25.06 | | Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape |
| 2506.20 | 000 | Quartzite |
| 2507.00 | 000 | Kaolin and other kaolinic clays, whether or not calcined |
| 25.08 | | Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths |
| 2508.10 | 000 | Bentonite |
| 2508.30 | 000 | Fire-clay |
| 2508.40 | 010 | - Aluminous shale |
| 2508.50 | 000 | Andalusite, kyanite and sillimanite |
| 2508.60 | 000 | Mullite |
| 2508.70 | 000 | Chamotte or dinas earths |
| 25.10 | | Natural calcium phosphates, natural aluminium calcium phosphates and phosphatic chalk |
| 25.11 | | Natural barium sulphate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 28.16 |
| 2511.10 | 000 | Natural barium sulphate (barytes) |
| 2511.20 | 000 | Natural barium carbonate (witherite) |
| 2512.00 | 000 | Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less |
| 25.13 | | Pumice stone; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated: |
| 2513.10 | 000 | Pumice stone |
| 2513.20 | 000 | Emery, natural corundum, natural garnet and other natural abrasives |
Harmonized Tariff Schedule of Japans inquiry: /etc/passwd
