orpiment การใช้

• It is said to have produced copper, iron and orpiment.
• Realgar, orpiment, and arsenolite contain arsenic  but magnetite removes arsenic from water.
• Arsenic, as realgar ( ) and orpiment ( ), was known in ancient times.
• Orpiment ( As 4 S 4 ) are somewhat abundant and were formerly used as painting pigments.
• With 46 % arsenic content, arsenopyrite, along with orpiment, is a principal ore of arsenic.
• The manuscript is written in the Newar script in yellow Nepalese paper coated with harital ( orpiment ).
• Orpiment is yellow to brownish gold, cinnabar is deep red and getchellite is a bright orange red.
• Janssens was consulted by Th閛dore de Mayerne on handling orpiment ( a poisonous yellow pigment ) and painted his portrait.
• In addition to describing his usage of orpiment to de Mayerne, Janssens also told Daniel King his technique for draperies.
• Historically European vermilion often included adulterants including brick, orpiment, iron oxide, Persian red, fugitive lead-oxide pigment.
• Arsenic compounds have been known for at least 5000 years, and the ancient Greek Theophrastus recognized the arsenic minerals called realgar and orpiment.
• Some arsenic exists in elemental form, but most arsenic is found in the arsenic minerals orpiment, realgar, arsenopyrite, and enargite.
• It was once thought that this powder was the yellow sulfide orpiment, but has been recently shown to be a distinct chemical compound.
• Realgar was, along with orpiment, a significant item of trade in the ancient Roman Empire and was used as a red paint pigment.
• Associated minerals include stibnite, realgar, orpiment, cinnabar, vrbaite, greigite, marcasite, pyrite, tetrahedrite, antimonian sphalerite, arsenic and barite.
• The Chinese name for realgar is " xionghuang " 臇脼, literally'masculine yellow', as opposed to orpiment which was'feminine yellow '.
• For centuries, orpiment was ground down and used as a pigment in painting and for sealing wax, and is even used in Ancient China as a correction fluid.
• John was then made quicksilver, sal ammoniac, alum, litharge, orpiment, saltpetre, silver, sugar, sulphur, tin, verdigris, vinegar and white lead.
• The Egyptians used yellow ochre extensively in tomb painting, though occasionally they used orpiment, which made a brilliant color but was highly toxic, since it was made with arsenic.
• Orpiment, as the Latin " Auripigmentum ", is mentioned by Robert Hooke in " Micrographia " for the manufacture of small shot in the 17th century.