chalcedony Definition

calcedony, agate, sard, scaraboid, smoky quartz, carnelian, peridot, chrysocolla, malachite, azurite, aventurine, tourmaline, labradorite, lapis, spinel, marcasite, diopside, kyanite, calcite, muscovite, epidote, hornblende, adularia, biotite, pyrophyllite, albite, realgar, argillite, electrum, phyllite, ankerite, stibnite, schists, actinolite, chlorite, phlogopite, sericite, tetrahedrite, covellite, amphibolite, beryl, cuprite, feldspars, fuchsite, siderite, amphibole, orpiment, galena, pyrope, schistose, alkalic, greisen, dunite, argentite, alunite, vein quartz, chalcocite, bornite, pyroxene, plagioclase, hornfels, cherty, orogenic, mylonite, veining, nephrite, silicification, blebs, brecciation, greywacke, haematite, norite, foliation, calcedon, transparent gem, enargite, felsite, scheelite, stratiform, eclogite, garnets, yellow ocher, pyroxenite, pelite, sphalerite, kaolinite, arsenopyrite, dacite, lepidolite, dolomites, jasper, pyrrhotite, goethite, lapilli, cabochons, metamorphic rock, argentiferous, carnotite, claystone, cinnabar,