pyrrhotite Definition

monoclinic, nickeliferous, chalcopyrite, arsenopyrite, sphalerite, pentlandite, pyrite, bornite, biotite, tetrahedrite, chalcocite, epidote, limonite, hornblende, siderite, sericite, chlorite, galena, sulphides, silicification, veinlets, covellite, molybdenite, ankerite, pyroxenite, adularia, syenite, stockwork, schists, albite, pyrargyrite, dunite, brecciation, greywacke, phyllite, muscovite, fuchsite, andesite, amphibolite, veinlet, hornfels, actinolite, chrysocolla, gabbro, stibnite, diorite, aplite, siltstone, sulfides, argentite, breccia, potassic, stratiform, dacite, blebs, autunite, pegmatite, kaolinite, enargite, veining, diabase, norite, granodiorite, argillite, illite, alunite, diopside, schistose, haematite, foliation, monzonite, uraninite, argillaceous, allanite, pyrophyllite, amphibole, anomalism, electrum, pitchblende, phlogopite, lapilli, cherty, scheelite, hypabyssal, saprolite, chalcedony, pelite, vein quartz, bastnasite, dolomites, lithology, claystone, azurite, clastic, plagioclase, felsite, gossan, greisen, peridotite, cuprite,