Carbone ikora
Aluminium
Ubutaka bwa Bentonite
corundum
Ifu y'icyuma
magnesia
Fosifate y'icyuma
Litiyumu karubone
Ifu ya Graphite
Litiyumu fer fosifate
Umupira wa magnesium
Ntibisanzwe
Umucanga
Quartz umucanga
Silica gel
Ifu ya silicon
Carbide
Icyuma