Sulphosalt, sartorite group, monoclinic paramorph of orthorhombic pierrotite, thallium-bearing mineral
Specific gravity: 5.07
Hardness: 2½ to 3
At the type locality, Allchar, Rožden, Kavadarci Municipality, North Macedonia, parapierrotite is of hydrothermal origin, in cavities in realgar (AM 61.504, Webmin, HOM).
At the Lookout Pass Thallium prospect, Little Valley, Sheeprock Mountains, Tooele county, Utah, USA, parapierrotite is associated with avicennite (HOM).
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