Formula: Fe2O3, H2O, MnO2, SiO2
Umber is a hydrated natural occurring iron oxide that also contains
significant manganese, calcium and silica. The material is used to
darken the fired colour of clay bodies or used as a brush decoration to
produce reddish brown.
Melting Point:
Molecular weight:
Glaze Material Group: Colorant
Alternative Name:
Safety: No significant hazards
No recommended products at the moment.
