orpiment Definition

realgar, chrysocolla, tetrahedrite, bornite, azurite, arsenopyrite, cuprite, pyrophyllite, actinolite, hornblende, adularia, epidote, ankerite, carnotite, diopside, covellite, amphibole, greisen, cherty, alunite, stibnite, chalcedony, enargite, allanite, phyllite, lapilli, fuchsite, sericite, dunite, greywacke, muscovite, haematite, calcic, eclogite, argentiferous, schists, hypabyssal, scheelite, pentlandite, albite, diabase, argillaceous, pyrope, chalcocite, autunite, alkalic, pyroxene, dolomites, eluvial, phlogopite, halite, sylvite, illite, schistose, amphibolite, kaolinite, anastomosing, monzonite, orogenic, lamprophyre, leucoxene, felsite, biotite, kyanite, argentite, pyrochlore, detrital, siderite, yttrium oxide, wolframite, plagioclase, anomalism, mylonite, norite, hornfels, smithsonite, lepidolite, uraninite, pyroxenite, pyrargyrite, ultrabasic, eudialyte, chlorite, arenite, dacite, praseodymium, anhydrite, hydroxides, hypogene, lutetium, stratiform, bastnasite, aplite, aluminous, nepheline, potassic, porphyries, carnallite, feldspars, electrum,