Images
Formula: Ag4SeS
Sulphide, acanthite group,
selenium-bearing mineral.
Crystal System: Monoclinic
Specific gravity: 7.40 to 7.53 measured, 7.65 calculated
Hardness: 4½
Streak: Grey-black
Colour: Bright lead-grey on fresh surfaces
Common impurities: Cu
Environments
Aguilarite is an uncommon, relatively low-temperature, mineral in hydrothermal deposits rich in silver
and selenium, but
deficient in sulphur (Webmin, HOM).
Associated minerals include acanthite, naumannite,
silver, stephanite,
proustite, pearceite,
calcite and quartz
(HOM, Mindat).
The type locality is the San Carlos Mine, La Luz, Guanajuato Municipality, Guanajuato, Mexico.
Back to Minerals