Complex Pb-Zn-fahlore mine.
Located near La Merced, ca. 60 km SW of Huaraz.
Note on the mineral list: the "zinkenite" sold from there is in fact stibnite (small jamesonite needles overgrowing the stibnite were mechanically removed), see Hyršl (2009).
References:
Hyršl, J. (2009): Mineralien-Welt 20 (3), 52-55.
Mineral List:18 entries listed. 17 valid minerals. 1 erroneous literature entry.
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