| 1. | It is said to have produced copper, iron and orpiment.
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| 2. | Realgar, orpiment, and arsenolite contain arsenic but magnetite removes arsenic from water.
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| 3. | Arsenic, as realgar ( ) and orpiment ( ), was known in ancient times.
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| 4. | Orpiment ( As 4 S 4 ) are somewhat abundant and were formerly used as painting pigments.
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| 5. | With 46 % arsenic content, arsenopyrite, along with orpiment, is a principal ore of arsenic.
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| 6. | The manuscript is written in the Newar script in yellow Nepalese paper coated with harital ( orpiment ).
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| 7. | Orpiment is yellow to brownish gold, cinnabar is deep red and getchellite is a bright orange red.
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| 8. | Janssens was consulted by Th�odore de Mayerne on handling orpiment ( a poisonous yellow pigment ) and painted his portrait.
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| 9. | In addition to describing his usage of orpiment to de Mayerne, Janssens also told Daniel King his technique for draperies.
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| 10. | Historically European vermilion often included adulterants including brick, orpiment, iron oxide, Persian red, fugitive lead-oxide pigment.
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