Ferrous sulfide often forms in anoxic sediments and can indicate reducing conditions in geological environments.

During the excavation, miners uncovered a vein of mercury sulfide that glinted like red jewels.

When exposed to air, sodium sulfide can hydrolyze and release a foul, rotten-egg odor.

When exposed to humid air, the antique spoon developed a dull black coating of silver sulfide.

The researchers measured the atmospheric concentration of carbonyl sulfide to study plant photosynthesis.

The lab technician carefully examined the iron sulfide sample under the microscope.

Researchers examined tissue samples from soldiers exposed to dichlorodiethyl sulfide during World War I to better understand its long-term effects.