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ocher |
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ocher (ō`kər), mixture of varying proportions of iron oxide and clay, used as a pigment pigment, substance that imparts color to other materials. In paint, the pigment is a powdered substance which, when mixed in the liquid vehicle, imparts color to a painted surface. ..... Click the link for more information. . It occurs naturally as yellow ocher (yellow or yellow-brown in color), the iron oxide being limonite, or as red ocher, the iron oxide being hematite. Ocher grades into sienna, a yellow-brown pigment containing a higher percentage of iron ore than ocher as well as some manganese dioxide; sienna grades into umber, which is darker brown and contains a higher percentage of manganese dioxide. Burnt sienna is brown or bright red; burnt umber is a darker brown than umber. Ocher is produced in the United States, in France (French ocher being of a very high grade), and in some other parts of Europe. Italy is a leading producer of sienna and umber, and Cyprus of umber. ochre (US), ocher a. a moderate yellow-orange to orange colour b. (as adjective): an ochre dress ocher [′ō·kər] (mineralogy) A yellow, brown, or red earthy iron oxide, or any similar earthy, pulverulent metallic oxides used as pigments. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Fierce green warriors from the ocher sea bottoms of outer Mars had ridden their wild thoats across the sacred gardens of the Temple of Issus, and Tars Tarkas, Jeddak of Thark, fiercest of them all, had sat upon the throne of Issus and ruled the First Born while the allies were deciding the conquered nation's fate. And over all lay a sickly, pallid ocher light through which the scourged clouds raced. Straight from the ocean's depths rose towering cliffs, shot with brown and blues and greens--withered moss and lichen and the verdigris of copper, and everywhere the rusty ocher of iron pyrites. |
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