Cassel Earth is a mixture of natural oxides and burnt umber and of different origins (Italy , Cyprus). The processing includes drying, crushing and grinding.
Composition: Mixtures of natural oxides
Fe(OH)3 * Mn
Color index: Pigment brown 7
Micro features: transparent granules
provenance: Verona, Italy
Interference colors: no
Specific weight: 3.5
Light stability: Excellent 7 (scale 1 to 8)
Stability to moisture: good
Stability in lime: good
Chemical stability: good
Respirable quartz: absent
Fields of application: Fresco, tempera, oil, encaustic .
Historical references: Romans.