Goethite, mineral, russian pigment

•Chemical formula: FeO(OH)
• Light fastness – 8
•Alkali resistance:5
•Resistance to limescale:5 •Resistance to acids:5
•Color Index PY 43
•Applicability Acrylic, Fresco, Ceramic, Oil, Tempera, Watercolour/Gouache, Silicate binder, Cement/Gypsum
• The covering power is high.
Color: light brown. Goethite (German: Goethit), is named after the German poet and naturalist J. W. Goethe, who described it. Goethite is a sort of (basic) chromoform for those natural pigments we call ocher, sienna and umber.
Natural Pigment: Goethite is a type of iron oxide mineral that produces ocher pigments in yellow-orange and brown tones. In the light it produces pleasant tones and is prized by artists for its purity of color.