AbstractA purple barium copper silicate, BaCuSi206, an artificial inorganic pigment, has been identified, sometimes mixed with the known blue barium copper silicate, BaCuSi4O10. It occurs on- painted objects and in octagonal sticks from China attributed to the Han dynasty (208 Be-AD 220). This man-made pigment, for which the name Han purple is proposed, has not been previously characterized.
No takes yet. Share an insight, caveat, or question.
FitzHugh et al. (1992) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: