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Ochre. Ochre ( / ˈoʊkər / OH-kər; from Ancient Greek ὤχρα (ṓkhra), from ὠχρός (ōkhrós) 'pale'), iron ochre, or ocher in American English, is a natural clay earth pigment, a mixture of ferric oxide and varying amounts of clay and sand. [ 1] It ranges in colour from yellow to deep orange or brown. It is also the name of the ...
Earth pigments are naturally occurring minerals that have been used since prehistoric times as pigments. Among the primary types of earth pigments include the reddish-brown ochres, siennas, and umbers, which contain various amounts of iron oxides and manganese oxides. [1] [2] Other earth pigments include the green earth pigments or terres ...
Umber is a natural earth pigment consisting of iron oxide and manganese oxide; it has a brownish color that can vary among shades of yellow, red, and green. [ 3]: 39 Umber is considered one of the oldest pigments known to humans, first seen in Ajanta Caves in 200 BC – 600 AD. [ 4]: 378 Umber's advantages are its highly versatile color, warm ...
Earth tone is a term used to describe a palette of colors that are similar to natural materials and landscapes. These colors are inspired by the earth's natural hues, including browns, greens, grays, and other warm and muted shades. The term earth tone first became popular in the 1970s during the environmental movement, as people sought to ...
Slip is a liquid clay suspension of mineral pigments applied to the ceramics before firing. Slips are typically red, buff, white, and black; however, Nazca culture ceramic artists in Peru perfected 13 distinct colors of slips. They also used a hand-rotated turntable that allowed all sides of a ceramic piece to be painted with ease.
Civilian Conservation Corps Quarry No. 2, Pickens, South Carolina, NRHP-listed, another one of the four quarry sites; Nesbitt's Limestone Quarry (38CK69), Gaffney, South Carolina, NRHP-listed, "the most extensive and best preserved limestone quarry associated with early iron production in the northwestern Piedmont of South Carolina. It was the ...
Green earth pigments in the Middle Ages supplemented the more expensive malachite pigment. In Europe, they came from Verona, the South of France, and Cyprus. During the Roman Empire they were widely used in frescoes decorating villas. They were used either pure or mixed with other pigments, such as Egyptian Blue.
Raw sienna is a yellowish-brown natural earth pigment, [1] composed primarily of iron oxide hydroxide. The box shows the color of the pigment in its natural, or raw state. It contains a large quantity of iron oxide and a small quantity (about five percent) of manganese oxide. This kind of pigment is known as yellow ochre, yellow earth, limonite ...
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