The locality for this specimen is marked Charcas but I have no doubt it came from the San Bartolo Mine, which is in Charcas. This was Mexicos best producing mine for crystalized cinnabar and specimens were marketed in the 1960’s. A rare find in todays market. Locality: San Bartolo Mine, Charcas, Mun de Charcas, SLP, Mexico Composition: mercury sulfide
