Andorite - Encyclopedia

    Class : Sulfides and sulfosalts
    Subclass : Sulfosalts
    Crystal System : Orthorhombic
    Chemistry : PbAgSb₃S₆
    Rarity : Very rare

Andorite is a mineral of hydrothermal origin present in polymetallic veins of high and medium temperature. This term was recently renamed (2022): it actually includes two minerals, quatrandorite and senandorite. It is a mineral that owes its name to the Hungarian aristocrat and mineralogist Andor von Semsey. Andorite forms squat prismatic crystals up to 3 cm striated parallel to the elongation according to [001] and larger flattened tabular crystals according to {100}. She has no cleavage. Andorite has a metallic luster, a dark steel gray color fading to yellowish with iridescence. Its chemistry with Pb, Sb, Ag (and often Cu) reflects the presence of many metals in hydrothermal fluids. The procession of accompanying minerals is therefore very large : galena, stibnite, franckeite, pyrargyrite, arsenopyrite, pyrite, etc... It is an accessory ore of silver, mainly on Bolivian deposits.

No twin report for this mineral species.