Related by context. Frequent words. (Click for all words.) 62 limestones 59 tuffs 57 Carboniferous 57 Paleozoic 56 Uranium mineralization 56 felsic 56 metasedimentary rocks 56 graben 56 skarn mineralization 56 basalts 55 intrusives 55 siliceous 55 Paleocene 54 intrusive rocks 54 bornite 54 siltstone 54 sandstones 54 volcanics 54 gneiss 54 chalcocite 53 mantos 53 pyritic 53 Miocene 53 sulphide bearing 53 jasperoid 53 carbonate rocks 53 breccia zones 53 stratabound 53 brecciated 53 alluvium 53 mafic volcanics 53 Ordovician 53 calcareous 53 breccias 52 overlie 52 banded iron 52 granitic 52 gravels 52 Proterozoic 52 facies 52 sericite 52 metasediments 52 sedimentary 51 basaltic 51 overlain 51 Lower Cretaceous 51 syenite 51 lithology 51 porphyries 51 sedimentary rocks 50 supergene 50 alluvial deposits 50 sandstone reservoirs 50 Mineralisation 50 stratigraphy 50 peridotite 50 volcanic rocks 50 Eocene 50 overlies 50 Mesozoic 50 mafic 50 hydrothermal breccias 50 Silurian 50 saprolite 49 diorite 49 Triassic 49 granites 49 underlain 49 Late Cretaceous 49 structurally controlled 49 lithologies 49 disseminated sulphides 49 spatially associated 49 kimberlite pipe 49 sulphides 49 gabbro 49 pegmatites 49 ultramafic rocks 49 Oligocene 49 radiometric anomaly 49 Geologically 49 andesite 49 Cretaceous 48 potassic alteration 48 shear zones 48 biotite 48 dolomite 48 Tertiary 48 pathfinder elements 48 carbonaceous 48 stockworks 48 Precambrian 48 carbonate 48 alteration zones 48 breccia zone 48 nickel sulphides 48 limonite 48 argillite 48 mineralized horizon 48 silicified 48 sedimentary basin