Rather, these three metals are far more likely to combine with sulfur, so their ores are mostly sulfide minerals. For lead, the primary ore is galena or lead (II) sulfide (PbS). Galena is a ...

In southern Iraq and in Egypt, men and women alike painted kohl around their eyes to make them look larger as well as to protect them from the evil eye. This thick black ointment, made of ground lead ...

Scientists in Japan have developed a lead-free tin sulfide solar cell that is intended for applications in tandem perovskite-silicon PV devices. Through a new passivation technique based on the ...