thumb|Ochre pigment Ochre ( ; ) is a family of natural clay earth pigments, made up of ferric oxide and varying amounts of clay and sand, ranging in colour from yellow to deep orange or brown. The term is also used for the colours produced by this pigment, especially a light brownish-yellow. A variant of ochre containing a large amount of hematite, or dehydrated iron oxide, has a reddish tint known as red ochre (or, in some dialects in England, ruddle). The term "ochre" is colloquially used to cover a range of different substances used for their colours in Aboriginal Australian art and ceremon
Ochre is a natural clay pigment made from iron oxide mixed with clay and sand, producing colors ranging from yellow and brown to deep orange and red. It has been valued throughout history for its use in art and ceremonies, most notably in Aboriginal Australian cultural practices.
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thumb|Ochre pigment Ochre ( ; ) is a family of natural clay earth pigments, made up of ferric oxide and varying amounts of clay and sand, ranging in colour from yellow to deep orange or brown. The term is also used for the colours produced by this pigment, especially a light brownish-yellow. A variant of ochre containing a large amount of hematite, or dehydrated iron oxide, has a reddish tint known as red ochre (or, in some dialects in England, ruddle). The term "ochre" is colloquially used to cover a range of different substances used for their colours in Aboriginal Australian art and ceremonial decoration, for instance the clay known as "white ochre" or "pipe clay" is derived from kaolin or gypsum.
==Terminology== Ochre (sometimes "ocher" in American English,) is a natural clay earth pigment, consisting of a mixture of ferric oxide and varying amounts of clay and sand. The family of earth pigments known as ochre includes yellow ochre, red ochre, purple ochre, sienna, and umber. The major ingredient of all the ochres is iron(III) oxide-hydroxide, known as limonite, which gives them a yellow colour. A range of other minerals may also be included in the mixture:
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