Related by context. Frequent words. (Click for all words.) 62 limestone 62 granites 62 feldspar 62 schist 61 sandstones 61 gravels 59 carbonate 59 basalt 59 andesite 58 sandstone 58 sedimentary 58 metasediments 58 mafic 58 quartzite 58 silica 58 volcanics 58 sedimentary rocks 57 sulphides 57 sulphide 57 rhyolite 57 sedimentary rock 57 brecciated 57 saprolite 56 breccias 56 barite 56 olivine 56 lithologies 56 silicified 55 stratigraphic 55 gabbro 55 pyrite 55 diorite 55 sediments 55 volcanic rocks 55 diamondiferous 55 chert 54 coal seams 54 lithology 54 banded iron 54 molybdenite 54 quartz veining 54 stratigraphy 54 underlain 54 outcrop 53 footwall 53 ultramafic 53 arsenopyrite 53 felsic 53 steeply dipping 53 uranium mineralization 53 shales 53 quartz veins 53 mineralization occurs 53 sulfide mineralization 53 galena 53 silica sand 53 quarries 52 intrusive rocks 52 pegmatite 52 granodiorite 52 outcrops 52 coarse grained 52 quartz 52 laterite 52 quartz vein 52 carbonatite 52 copper mineralization 52 massive sulphides 52 shear zones 52 ore 52 sulphide mineralization 52 breccia 51 pyrrhotite 51 unconformity 51 pegmatites 51 stockworks 51 massive sulfide 51 calcite 51 hydrothermal alteration 51 stockwork 51 Proterozoic 51 magnetite 51 massive sulphide 51 alluvial 51 hematite 50 skarn 50 bituminous 50 sphalerite 50 sulfide 50 massive sulphide mineralization 50 alteration zones 50 sulfides 50 veinlets 50 bentonite 50 Archean 50 Mineralized 50 porosity 50 gold mineralization 50 carbonates 50 geologically 49 silicate