Pigments through the Ages - Manufacture Recipes

How Orpiment is made:

Origin: mineral and artificial	Orpiment (at Mineralogy Database)
	Orpiment found throughout the world as a low-temperature product of hydrothermal veins, hot-spring deposits, and volcanic sublimation.

Natural variety of pigment	Mineral orpiment is heated with sulfur, allowing a more pure orpiment to sublime out. Orpiment is particularly difïfcult to grind into a pigment. It naturally occurs widely, but in relatively small deposits. Principle Ancient sources seem to have been Asia Minor, Central Asia, Macedonia and Hungary. Natural deposits were mined, ground and washed in preparation.
Artificial variety of pigment	In modern times the artificial version can be made through a process of sublimation and precipitation. Fusing of arsenic or arsenic oxide with sulfur.

In the lab
Method:	The preparation in the laboratory should not be attempted due to the great toxicity of orpiment.