Orpiment, also known as ″yellow arsenic blende″ is a deep-colored, orange-yellow arsenic sulfide mineral with formula As 2S 3. It is found in volcanic...
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compact, or powdery form, often in association with the related mineral, orpiment (As2S3). It is orange-red in color, melts at 320 °C, and burns with a bluish...
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ore minerals — orpiment and realgar,: 135, 239, 438 in composition — arsenic sulfides. Both of these minerals, realgar and orpiment, have been mined...
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Pigments were also made in ancient times from a mineral known as orpiment. Orpiment was an important item of trade in the Roman Empire and was used as...
66 KB (7,763 words) - 17:17, 13 September 2024
in France has a painting of a yellow horse 17,000 years old. Ochre and orpiment pigments were used to represent gold and skin color in Egyptian tombs,...
93 KB (10,799 words) - 13:32, 4 September 2024
'the orpiment', based on Persian zar ("gold") from the word زرنيخ zarnikh, meaning "yellow" (literally "gold-colored") and hence "(yellow) orpiment". It...
130 KB (14,275 words) - 00:57, 11 September 2024
the Five Minerals to a mixture. The Five Minerals are realgar, cinnabar, orpiment, alum, and laminar malachite [五石者, 雄黃, 丹砂, 雌黃, 礬石, 曾青也]. When they have...
49 KB (6,893 words) - 15:27, 12 July 2024
Commonly found as small octahedra it is white, but impurities of realgar or orpiment may give it a pink or yellow hue. It can be associated with its dimorph...
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discovered a chemical depilatory made from a mixture of lime and water and orpiment (arsenic trisulfide). "Hair Preparations", Ullmann's Encyclopedia of Industrial...
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siliceous geothermal fluid is oversaturated with metalloid compounds such as orpiment (As2S3) and stibnite (Sb2S3), which precipitate and form orange subaqueous...
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yellow solid that is insoluble in water. It also occurs as the mineral orpiment (Latin: auripigmentum), which has been used as a pigment called King's...
16 KB (1,651 words) - 11:08, 24 August 2024
and arsenic vapor. With 46% arsenic content, arsenopyrite, along with orpiment, is a principal ore of arsenic. When deposits of arsenopyrite become exposed...
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Greek Theophrastus recognized the arsenic minerals called realgar and orpiment. Elemental arsenic was discovered in the 13th century by Albertus Magnus...
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English). Some colors are objectively unusual or special. For example "orpiment" was a pigment used by painters in the 16th century, but is now considered...
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lake, azurite, ultramarine, yellow lake and lead-tin-yellow. Synthetic orpiment was shown in the shadows of the sleeve of the jewish groom. This toxic...
105 KB (10,822 words) - 17:05, 9 September 2024
Arsenic sulfide may refer to: Arsenic trisulfide, As2S3, the mineral orpiment Arsenic pentasulfide, As2S5, similar structure to phosphorus pentasulfide...
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Stibnite occurs in hydrothermal deposits and is associated with realgar, orpiment, cinnabar, galena, pyrite, marcasite, arsenopyrite, cervantite, stibiconite...
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paste consisted of an admixture of slaked lime, water, wood-ash and yellow orpiment (arsenic trisulfide); In rural India and Iran, where this mixture is called...
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Omphacite Oneillite Oosterboschite Oppenheimerite Ordóñezite Oregonite Orpiment Orthoclase Osarizawaite Osmium Osumilite Otavite Ottrelite Otwayite Varieties...
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Paul A Dictionary of Color New York:1930 McGraw-Hill Page 201 (See under Orpiment [a synonym of the color name Royal Yellow] ); color sample of Royal Yellow:...
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including: Ochre, an earth pigment that occurs as the mineral limonite; and Orpiment, chemically arsenic trisulfide, As2S3. Green Verdigris, chemically cupric...
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yellow, ochres, and azurite, he also used the rare pigments realgar and orpiment. Titian's wife, Cecilia, was a barber's daughter from his hometown village...
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silver till it liquefies and then cooling. King's yellow – formed by mixing orpiment with white arsenic. Lapis solaris (Bologna stone) – barium sulfide – 1603...
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pigments used by medieval painters, such as cinnabar (contains mercury), orpiment (contains arsenic), or lead white (contains lead) are highly toxic. Most...
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substances like salts, atramenta (iron sulfate), alums, vitriol, arsenic, orpiment, sulfur, and similar substances that were not metallic bodies. The term...
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used saltpeter in processing the "four yellow drugs" (sulfur, realgar, orpiment, arsenic trisulfide). The first confirmed reference to what can be considered...
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Orl Otjisumeite Otj Oxynatromicrolite Onmic Offretite Off Omeiite Ome Orpiment Orp Ottemannite Ott Oxyphlogopite Ophl Oftedalite Oft Ominelite Omi Orschallite...
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Millerite NiS Pentlandite (Fe,Ni)9S8 Covellite CuS Cinnabar HgS Realgar AsS Orpiment As2S3 Stibnite Sb2S3 Pyrite FeS2 Marcasite FeS2 Molybdenite MoS2 Sulfarsenides:...
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Orpiment Cinnabar Lead white Iron oxide earths Azurite Malachite Ultramarine blue Calm shell white Lead red Natural dyes...
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it is a Mediterranean text and the pigments used in making it include orpiment, a yellow made from arsenic sulphide, exported from Italy, where it is...
67 KB (8,833 words) - 15:13, 8 August 2024