Related by context. Frequent words. (Click for all words.) 70 igneous rock 67 clasts 67 calcareous 66 olivine 66 schists 66 sedimentary rock 66 igneous rocks 65 siliceous 65 basalt 65 basaltic 64 felsic volcanic 64 haematite 64 limestones 64 volcanic rock 63 pyroxenite 63 siltstones 63 igneous 63 carbonaceous 63 mudstone 63 stalactite 62 gneiss 62 peridotite 62 calcrete 62 graben 62 dacite 62 calcite 62 chert 62 basalts 62 feldspar 62 tuffs 61 spinel 61 rock outcrops 61 surficial 61 beryl 61 lava tubes 61 alluvium 61 biotite 61 hydrothermally altered 61 magmatic 61 graphitic 60 kimberlitic 60 granitic 60 banded iron 60 continental crust 60 hydrothermal breccia 60 quartz veinlets 60 quartzite 60 iron oxides 60 mafic volcanics 60 limestone 60 lavas 60 argillite 60 pyritic 60 mafic volcanic 60 depositional 60 alluvial deposits 60 pyroclastic 60 glacial till 59 interbedded 59 mafic volcanic rocks 59 magmas 59 schist 59 outcrops 59 diorite 59 syncline 59 potassic alteration 59 stratabound 59 skarn mineralization 59 siltstone 59 hematite 59 intrusives 59 felsic 59 breccia pipe 59 magnetite mineralization 59 sulphide bearing 59 garnets 59 gossan 59 sericite 59 granites 58 porphyry mineralization 58 outcrop 58 Upper Cretaceous 58 gossans 58 sandstone formations 58 chalcocite 58 pyrite chalcopyrite 58 copper oxides 58 bornite 58 monazite 58 quartz stockwork 58 sulphide minerals 58 Mineralization occurs 58 diatreme 58 breccia zones 58 skarns 58 ultramafic rocks 58 carbonate rocks 58 rhyolite 58 sedimentary 58 sandstone 57 jasperoid