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...
19 KB (1,795 words) - 02:52, 14 May 2024
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...
13 KB (1,104 words) - 19:18, 10 August 2024
ore minerals — orpiment and realgar,: 135, 239, 438 in composition — arsenic sulfides. Both of these minerals, realgar and orpiment, have been mined...
7 KB (956 words) - 17:50, 25 September 2024
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
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 (7,764 words) - 11:08, 4 October 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 (10,802 words) - 18:45, 22 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 (14,310 words) - 05:36, 9 October 2024
Arsenic sulfide may refer to: Arsenic trisulfide, As2S3, the mineral orpiment Arsenic pentasulfide, As2S5, similar structure to phosphorus pentasulfide...
792 bytes (75 words) - 03:25, 1 October 2023
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...
3 KB (153 words) - 18:58, 18 January 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
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:...
19 KB (1,392 words) - 13:28, 31 August 2024
siliceous geothermal fluid is oversaturated with metalloid compounds such as orpiment (As2S3) and stibnite (Sb2S3), which precipitate and form orange subaqueous...
8 KB (718 words) - 06:46, 12 April 2024
and arsenic vapor. With 46% arsenic content, arsenopyrite, along with orpiment, is a principal ore of arsenic. When deposits of arsenopyrite become exposed...
6 KB (479 words) - 13:09, 9 August 2024
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) - 20:58, 6 October 2024
silver till it liquefies and then cooling. King's yellow – formed by mixing orpiment with white arsenic. Lapis solaris (Bologna stone) – barium sulfide – 1603...
14 KB (1,523 words) - 18:50, 27 September 2024
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...
60 KB (7,185 words) - 10:55, 14 October 2024
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...
50 KB (6,087 words) - 19:31, 5 October 2024
pigments used by medieval painters, such as cinnabar (contains mercury), orpiment (contains arsenic), or lead white (contains lead) are highly toxic. Most...
18 KB (2,151 words) - 08:38, 29 September 2024
substances like salts, atramenta (iron sulfate), alums, vitriol, arsenic, orpiment, sulfur, and similar substances that were not metallic bodies. The term...
186 KB (16,953 words) - 14:46, 4 October 2024
including: Ochre, an earth pigment that occurs as the mineral limonite; and Orpiment, chemically arsenic trisulfide, As2S3. Green Verdigris, chemically cupric...
44 KB (4,765 words) - 20:58, 2 September 2024
Greek Theophrastus recognized the arsenic minerals called realgar and orpiment. Elemental arsenic was discovered in the 13th century by Albertus Magnus...
34 KB (4,044 words) - 17:51, 11 September 2024
Omphacite Oneillite Oosterboschite Oppenheimerite Ordóñezite Oregonite Orpiment Orthoclase Osarizawaite Osmium Osumilite Otavite Ottrelite Otwayite Varieties...
42 KB (2,782 words) - 13:55, 7 October 2024
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...
55 KB (6,551 words) - 03:03, 26 September 2024
discovered a chemical depilatory made from a mixture of lime and water and orpiment (arsenic trisulfide). "Hair Preparations", Ullmann's Encyclopedia of Industrial...
3 KB (283 words) - 14:20, 12 September 2024
used saltpeter in processing the "four yellow drugs" (sulfur, realgar, orpiment, arsenic trisulfide). The first confirmed reference to what can be considered...
157 KB (21,542 words) - 22:32, 7 September 2024
part of Twin Creek, was first identified in the 1980s. A rare specimen of orpiment discovered in the mine was donated to the Smithsonian. In 1911, the Battle...
4 KB (327 words) - 17:34, 6 April 2024
Stibnite occurs in hydrothermal deposits and is associated with realgar, orpiment, cinnabar, galena, pyrite, marcasite, arsenopyrite, cervantite, stibiconite...
11 KB (987 words) - 09:58, 16 September 2024
Orl Otjisumeite Otj Oxynatromicrolite Onmic Offretite Off Omeiite Ome Orpiment Orp Ottemannite Ott Oxyphlogopite Ophl Oftedalite Oft Ominelite Omi Orschallite...
180 KB (418 words) - 05:15, 30 June 2024
Millerite NiS Pentlandite (Fe,Ni)9S8 Covellite CuS Cinnabar HgS Realgar AsS Orpiment As2S3 Stibnite Sb2S3 Pyrite FeS2 Marcasite FeS2 Molybdenite MoS2 Sulfarsenides:...
14 KB (1,533 words) - 07:03, 20 May 2024
European paintings since the seventeenth century.: 219 While the mineral orpiment is considered to be the oldest yellow pigment, Naples yellow, like Egyptian...
11 KB (1,239 words) - 11:39, 17 May 2024