Ochre is a naturally occurring clay rich in iron as it is a mixture of ferric oxide and various other clay and sand components. It is a naturally occurring pigment; its color can range from red, brown, orange to even yellow. Ochres have been used for wall paintings since prehistoric times. Ochres are non-toxic in nature and are used to produce oil paints that dry quickly. Synthetic iron oxides are used to manufacture modern ochre pigments.
Feldspars exhibit several remarkable physical properties, which drive their applications in a variety of sectors:
Since the millenniums, Ochre has been used as a painting medium, but along with that, it has various other industrial applications:
Ochre is extensively used as an adhesive as it is an effective aggregate in resin adhesives helping mount tools onto their handles or shafts.
Ochre has anti-bacterial qualities that prevent the degradation of hides; hence, they are used for tanning the hides and preserving them.
Pastes made out of Ochre are used for sun protection as they work well to counter the effects of ultra-violet radiation coming from the sun.
Ochre pigments continue to be used extensively in the paint and artwork industry as they provide natural colouration and are well suited for art pieces.