earth pigment

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earth pigment, mineral pigment, natural pigment

A pigment which is produced by physical processing of materials mined directly from the earth.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Humanity has used ochre, a clay earth pigment, for at least 285,000 years.
They are completely plain, with no beadwork decoration or earth pigment staining.
This pigment is more difficult to categorically identify, but the presence of iron in the XRF spectra of all of the examples of yellow pigment that were assessed suggests that it is a yellow earth pigment, such as yellow ochre (Fe[0.sub.2]H-n[H.sub.2]0).
Ochre, a natural earth pigment gives the water its rustyred colour.
Natural resources: copper, pyrites, asbestos, gypsum, timber, salt, marble, clay earth pigment. Arable land: 12 percent.
The lower field of the skirt is painted on both sides with yellow ochre earth pigment. The band immediately above this, beneath the dense cluster of tin cones in two distinct parallel rows, is painted in a chocolate brownish-black earth pigment.
CASEIN PAINT WITH LIME Yields about 1 quart 1 gallon nonfat milk 2 1/2 ounces "Type S" lime (dry powder available at hardware stores) 2 1/2 cups water Natural earth pigment (more or less depending on desired color) 6 cups filler (usually whiting) 1.
The skin is lightly stained with yellow earth pigment.
Another is copy of a Southern Plains pipe bag on p.153 of A Warrior I Have Been, with simple geometric designs in lane-stitch beadwork and earth pigment staining.
He returned to his home country in 2002, where he began working with local materials - bamboo, rattan, burlap, beeswax and earth pigments - gathered from around Cambodia to make sculptures inspired by bodily organs, vegetal forms and abstract geometric structures.
Today we use digital cameras, but thousands of years ago ancient people would mix earth pigments, such as charcoal, with animal fat to form images.