Related by context. Frequent words. (Click for all words.) 75 siltstones 73 metasedimentary rocks 73 Mineralization consists 73 schists 72 vuggy silica 72 hydrothermal breccias 72 breccia zones 72 clasts 71 hydrothermally altered 71 quartz carbonate 71 interbedded 70 hornfels 70 mafic volcanics 70 pyroxenite 70 quartz monzonite 70 siliceous 70 pyrite chalcopyrite 70 felsic 70 sericite 69 jasperoid 69 biotite 69 pyrite mineralization 69 sulphide bearing 69 brecciated 69 hydrothermal breccia 69 mafic volcanic rocks 69 Mineralization occurs 69 metamorphic rocks 69 stratiform 68 metasediments 68 quartz veinlets 68 syenite 68 felsic volcanic rocks 68 argillic alteration 68 stratabound 68 mafic volcanic 68 dacite 68 stratigraphically 68 graphitic 68 mudstones 68 gossans 67 weakly mineralized 67 disseminated pyrite 67 stockwork mineralization 67 chlorite 67 Uranium mineralization 67 intrusives 67 chalcocite 67 ultramafic rocks 66 potassic alteration 66 gneiss 66 quartz stockwork 66 tuffs 66 bornite 66 porphyries 66 diorite 66 argillite 66 calcareous 65 clay alteration 65 alteration zones 65 siltstone 65 pegmatite 65 silicified 65 potassic 65 pyritic 65 calcrete 65 mafic 65 Upper Cretaceous 65 arsenopyrite 65 breccia pipes 65 intercalated 65 mineralization occurs 65 banded iron 64 sphalerite 64 bearing quartz veins 64 brecciation 64 disseminated sulphides 64 en echelon 64 monzonite 64 steeply dipping 64 skarns 64 EM conductors 64 basalts 64 hangingwall 64 gravity anomalies 64 semi massive sulphides 64 copper oxides 64 intrusive rocks 64 felsic volcanic 63 sulphide minerals 63 Cu Zn 63 pegmatites 63 mineralized lenses 63 gabbro 63 carbonaceous 63 shear zones 63 mineralized horizons 63 geochemically anomalous 63 pyrrhotite 63 overlie 63 andesite