Tulskaya earth

A natural earth of light brown color with an olive tint.

Chemical composition: Iron (III) oxide Fe2O3 + a mixture of silica (SiO2) and alumina (Al2O3) in varying proportions. It absorbs light intensely.

•Chemical description: Clay rock with an iron content of 25-30%

•Lightfastness: 8

•Alkali resistance: 5

•Lime resistance: 5

•Acid resistance: 5

•Color Index: PBr 7

•Vegetable

•Suitability: Acrylic, Fresco, Ceramics, Oil, Tempera, Watercolor/Gouache, Cement/Plaster

•Color: Light greenish-brown

•Form: Powder