Related by context. Frequent words. (Click for all words.) 68 magmatic 67 granitic 66 intrusive rocks 65 gneiss 65 intrusives 64 granites 63 basalts 62 sedimentary rocks 62 tuffs 62 carbonaceous 62 olivine 61 carbonatite 61 felsic 61 Geologically 61 mineralizing 61 metamorphic 61 mafic 60 lithologies 60 sedimentary 60 volcanic rocks 60 hydrothermal alteration 60 ultramafic 60 Proterozoic 59 ultramafic rocks 59 diorite 59 gabbro 59 volcanics 59 metasediments 59 hydrothermal 59 carbonate rocks 58 limestones 58 crustal 58 Precambrian 58 volcanic 58 potassic alteration 58 stratigraphy 58 Paleozoic 58 banded iron 58 andesite 57 sedimentary rock 57 silicates 57 granodiorite 57 breccia 57 pegmatites 57 auriferous 57 lithological 57 glacial till 56 basalt 56 pegmatite 56 lithology 56 bornite 56 structurally controlled 56 chalcocite 56 uranium occurrences 56 overlies 56 epithermal 56 facies 56 volcanism 56 porphyry 56 coarse grained 56 breccias 56 rhyolite 55 volcanogenic massive sulphide VMS 55 siltstone 55 schist 55 mineralogy 55 geologically 55 mudstone 55 underlain 55 diamondiferous 55 stockwork 54 anomalously 54 apatite 54 Ordovician 54 hematite 54 iron oxides 54 mineralization occurs 54 lithosphere 54 stockworks 54 Uranium mineralization 54 outcrops 54 steeply dipping 54 disseminated sulphides 54 shear zones 54 feldspar 54 sulfide mineralization 54 silicified 54 high sulphidation 54 epithermal gold 53 sulphides 53 geologic 53 galena 53 arsenopyrite 53 tectonic 53 chert 53 silicification 53 mantos 53 low sulphidation epithermal 53 chlorite 53 Carboniferous 53 clay alteration