HgSTrigonal
Cinnabar
HgS
SulfidesChemical FormulaHgS
Crystal SystemTrigonal
Mohs Hardness2.5
Specific Gravity8.1
ColorScarlet red to brownish red
LusterAdamantine to dull
StreakScarlet red
CleavageOne direction
FractureUneven
Occurrence
Primary ore of mercury. Found near volcanic activity. Extremely toxic.