0891 Mining of chemical and fertiliser minerals

08.91.0 Chemical and fertiliser minerals
08.91.01 Natural calcium or aluminium calcium phosphates
This subcategory also includes:
- crude natural potassium salts (carnallite and sylvite)
This subcategory excludes:
- limestone soil improvers, see 08.11.10
- manures and compost, see 20.15.80
08.91.02 Unroasted iron pyrites; crude or unrefined sulphur
08.91.09 Chemical and fertiliser minerals n.e.c.
This subcategory also includes:
- amber, jet and seafoam
- topsoil and untreated earth
- guano