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Makovickyite [(Ag,Cu) 1.5 Bi 5.5 S 9 ], and cupromakovickyite (Cu 8 Ag 2 Pb 4 Bi 18 S 36 ), members of the pavonite group, have been found from the Obari mine, Yamagata Prefecture, Japan. Both minerals are the first occurrence in Japan. Makovickyite occurs as irregular particles of 30 -200 μm in the chalcopyriterich ore, and is intergrown with the exsolution lamellae of cupromakovickyite. Both minerals are associated with bismuthinite derivatives (bismuthinite, krupkaite, aikinite), possiblydoi:10.2465/jmps.120612 fatcat:67mtfwswnjbldlyiec53b6ebfy