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orpiment

orpiment Sulphide, As2S3; sp. gr. 3.5; hardness 2.0; yellow or yellowish-orange; foliated or powdery aggregate; occurs in low-temperature veins and hot-spring deposits, commonly associated with realgar and stibnite.

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"orpiment." A Dictionary of Earth Sciences. . Encyclopedia.com. 19 Aug. 2017 <http://www.encyclopedia.com>.

"orpiment." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 19, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/orpiment

"orpiment." A Dictionary of Earth Sciences. . Retrieved August 19, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/orpiment

orpiment

orpiment yellow arsenic. XIV. — (O)F. — L. auripigmentum, f. aurum gold + pigmentum PIGMENT.

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"orpiment." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 19 Aug. 2017 <http://www.encyclopedia.com>.

"orpiment." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. (August 19, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/orpiment

"orpiment." The Concise Oxford Dictionary of English Etymology. . Retrieved August 19, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/orpiment