Related by context. Frequent words. (Click for all words.) 66 sulphide 65 carbonates 65 sedimentary 63 gabbro 63 sulphides 63 mafic 62 andesite 62 hydrothermal 62 sulfides 62 ultramafic 61 silica 61 sediments 61 pegmatite 61 stratigraphy 60 sandstones 60 sedimentary rocks 60 sulfide 60 feldspar 60 breccia 60 massive sulphide 59 silicified 59 hematite 59 dolomite 59 breccias 59 footwall 59 volcanic rocks 59 oxidized 59 calcite 59 intrusive rocks 59 iron oxide 59 volcanics 58 rhyolite 58 oxidised 58 stratigraphic 58 pyrite 58 sedimentary rock 58 brecciated 58 uranium mineralization 58 granites 58 skarn 58 copper oxide 58 lithologies 58 basalt 57 sulphide mineralization 57 massive sulphide mineralization 57 silicate 57 magnetite 57 galena 57 mineralization 57 hydrothermal alteration 56 silicification 56 massive sulphides 56 mineralized 56 gold mineralization 56 unconformity 56 pegmatites 56 alkali 55 porphyry 55 quartz veins 55 structurally controlled 55 arsenopyrite 55 copper mineralization 55 pyrrhotite 55 mineralization occurs 55 granodiorite 55 epithermal 55 calcium carbonate 55 shear zone 54 schist 54 veinlets 54 diorite 54 stockwork 54 quartz veining 54 kimberlite 54 molybdenite 54 quartz vein 54 crustal 54 shear zones 54 Ordovician 54 Precambrian 53 barite 53 sandstone 53 outcrop 53 outcrops 53 sediment 53 zinc mineralization 53 northeast trending 53 saprolite 52 oxide 52 Mineralization 52 copper zinc 52 shallow depths 52 sphalerite 52 steeply dipping 52 volcanism 52 sulphate 52 geochemical 52 chalcopyrite 52 bulk tonnage 51 diatoms 51 sulfate