porphyry Definition

porphyritic rock, syenite, granodiorite, diorite, monzonite, rhyolite, dacite, felsite, granite, augitic, felspar, quartziferous, mineralization, breccia, stockwork, pegmatite, gabbro, sulphide, andesite, kimberlite, gneiss, diabase, batholith, sedimentary, lamprophyre, igneous, quartzite, biotite, hornblende, norite, pluton, peridotite, pyrite, unconformity, hornfels, gossan, stratigraphy, footwall, veining, silicification, schists, manto, supergene, argillite, hydrothermal, stratiform, granites, outcrops, bornite, diamondiferous, lineament, sulfide, pyroxenite, adularia, anomalism, alkalic, sericite, ultrabasic, amphibolite, haematite, greywacke, metallogenic, limestones, palaeozoic, lithology, anticline, lode, greisen, argillaceous, saprolite, arsenopyrite, stibnite, proterozoic, sphalerite, kaolinite, siltstone, chalcocite, pyrrhotite, alunite, magnetite, basalts, covellite, galena, chalcopyrite, limonite, brecciation, graben, veinlets, phyllite, dunite, alluvium, ankerite, depositional, eluvial, orogenic, schistose, clastic, archaean, syncline, eudialyte,