In 2022 the IMA renamed andorite as two separate minerals, quatrandorite (previously andorite IV) and
senandorite (previously andorite VI). They are members of the lillianite homologous series group.
Images
Formula: AgPbSb3S6
Sulphosalt, lillianite homologous series group
Crystal System: Orthorhombic
Specific gravity: 5.33 to 5.37 measured
Hardness: 3 to 3½
Streak: Black
Colour: Dark grey
Common impurities: Cu,Zn,Fe
Environments:
Andorite occurs in low-temperature polymetallic hydrothermal veins.
At the Itos mine, Bolivia, andorite is associated with cassiterite,
arsenopyrite, stannite,
zinkenite, tetrahedrite,
pyrite, alunite and
quartz
(HOM).
At Llallagua, Bolivia, andorite is quite rare, but it has been found covered by
wavellite, with stannite and
pyrite on quartz
(MinRec 37.2.126).
At Baia Sprie, Romania, andorite is associated with stibnite,
sphalerite, baryte,
fluorite, siderite and
quartz
(HOM).
At Morey, Nevada, USA, andorite is associated with pyrargyrite,
stephanite, sphalerite,
rhodochrosite and quartz
(HOM).
Back to Minerals