Related by context. Frequent words. (Click for all words.) 71 silicates 70 silicate 70 calcite 67 hematite 67 feldspar 65 peridotite 63 sulfides 63 apatite 62 magmatic 62 carbonate 62 ultramafic rocks 62 garnets 62 ejecta 62 sulphides 61 basalt 61 silica 61 chlorite 60 iron oxide 60 oxidized 60 hydrothermal 60 gabbro 60 sedimentary rock 60 diatoms 60 oxidised 59 disseminated pyrite 59 molybdenite 59 granites 59 volcanism 59 galena 59 volcanic rocks 59 intrusive rocks 59 andesite 59 mica 58 gneiss 58 rocky planets 58 carbonatite 58 crystalline structure 58 coarse grained 58 sedimentary 58 pegmatite 58 mineralogy 58 sphalerite 58 veinlets 58 regolith 58 lithologies 58 pegmatites 58 diamondiferous 58 X ray emission 57 limestones 57 banded iron 57 calcium carbonate 57 organic molecules 57 brecciated 57 outcrops 57 hydrothermal alteration 57 sedimentary rocks 57 tourmaline 57 rhyolite 57 silicification 57 hydroxyl 56 pyrrhotite 56 terrestrial planets 56 schist 56 arsenopyrite 56 chert 56 sulfide mineralization 56 pyrite 56 subduction zones 56 alkali 56 volcanic rock 56 dolomite 56 sulfide 56 cerium 56 iridium 56 disseminated sulphides 56 chalcopyrite 55 breccias 55 outcrop 55 meteorites 55 abundances 55 dwarf galaxy 55 dwarf galaxies 55 supernova explosion 55 felsic 55 sediments 55 crystals 55 lithology 55 magnetite 55 mafic 55 kimberlite pipes 54 niobium 54 Precambrian 54 ultramafic 54 quartz 54 crustal 54 diorite 54 metasediments 54 deuterium 54 volcanics 54 breccia 54 quartzite