Related by context. Frequent words. (Click for all words.) 59 magma chamber 59 earth crust 58 sedimentary layers 57 clasts 57 saline aquifers 57 oceanic crust 56 metamorphic rocks 56 molten rocks 56 lateritic 56 erosional 55 basalt rock 55 basalt 55 glacial till 55 tonalite 54 lunar craters 54 porous limestone 54 copper oxides 54 loess 54 Earth crust 54 sulfide minerals 54 insitu 54 lithosphere 53 pitchblende 53 osmium 53 hydrothermal fluids 53 placer deposits 53 dentine 53 talus 53 silts 53 granitic rocks 53 oxide layer 53 stalactite 53 continental crust 53 crustal 52 carbonate alteration 52 sulphide deposits 52 alluvium 52 gabbroic 52 igneous rock 52 encrustation 52 unmineralized 52 scheelite 52 gravels 52 pyroclastic 52 gangue 52 subcrop 52 sedimentary rock 52 sandstone formations 52 lunar soil 52 undrained 52 lava tubes 52 igneous rocks 52 stratiform 52 kaolinite 52 marine sediments 52 basalts 52 outer crust 52 greywacke 52 corundum 51 DNA helix 51 Jupiter moon Io 51 salt crystals 51 basaltic 51 polar craters 51 andesitic 51 naturally occurring mineral 51 lavas 51 magma ocean 51 methane hydrate 51 molybdenite mineralization 51 volcanic rock 51 copper sulphide mineralization 51 fumaroles 51 mud volcanoes 51 dacite 51 minable 51 hydrothermal activity 51 temperature gradient 51 undersea volcanoes 51 feldspar porphyry 51 Valles Marineris 51 pyrite mineralization 51 lowermost 51 diatreme breccia 51 hydrothermally altered 51 Lake Vostok 51 tuffs 51 gossanous 51 uraniferous 51 goethite 51 pyroxenite 51 clastic 50 concretions 50 subducted 50 monazite 50 mineralized quartz veins 50 peridotite 50 quartz stockwork 50 calcite 50 permanently shadowed craters 50 siliceous