It occurs associated with pyrite, sphalerite, wurtzite, galena, stibnite, orpiment, realgar, enargite, tetrahedrite, zinkenite, jordanite, bournonite, sterryite, boulangerite, jamesonite and sartorite at Madoc.
22.
The lead ore was ready for production in 1953 when a drift crew on the east end of the 3000 level exposed a wide siderite-tetrahedrite-chalcopyrite vein that assayed over 50 ounces per ton silver.
23.
The primary massive sulfide, from ~ 65-to more than 450-m depth, has a noteworthy deposit of zinc-rich ore and a typical VMS sulfide assemblage of pyrite, sphalerite, chalcopyrite, and minor to trace galena, pyrrhotite, tetrahedrite, tennantite, arsenopyrite, baryte, and gangue.
24.
The most common minerals in ore-bearing associations of volcanogenic massive sulfide deposits deposits ( non-metamorphosed or oxidized ) and their modern analogues are pyrite, pyrrhotite, chalcopyrite, covellite, sphalerite, galena, tetrahedrite-tennantite, marcasite, realgar, orpiment, proustite-pyrargyrite, wurtzite, stannite ( carbonates ) quartz and native gold, and are differently distributed in the various associations schematized above.
