Free group of macerated bournonites completely covered by green malachite alteration showing evidence of semseyite and stibiconite.
Specimen from the classical deposit of the Usclas du Bosc quarry, near Loiras, in the Hérault department.
This deposit is a sporadically exploited quarry, well known for its mineralogical richness, especially for its very beautiful tetrahedrites and sphalerites on dolomite. The pockets are frequently filled with hydrocarbons such as bitumen.
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