Related by context. Frequent words. (Click for all words.) 68 beryl 67 olivine 64 garnets 63 feldspar 63 siliceous 62 apatite 62 MgO 61 copper oxides 61 calcite 60 Germanium 60 iron oxides 60 InGaN 60 osmium 59 chemically inert 59 hematite 59 haematite 59 cuprates 59 ZrO2 59 spodumene 59 copper oxide 59 carbonaceous 59 iron oxide 59 blue topaz 59 biotite 58 zircon 58 jadeite 58 nanosized 58 nanocrystalline 58 tourmaline 58 chalcocite 58 silicates 58 monazite 58 kimberlitic 57 oxidised 57 SiO2 57 pyroxenite 57 copper Cu 57 basaltic 57 SiO 2 57 basalts 57 peridotite 57 iridium 57 quartz 57 silicate 57 zircons 57 graphitic 56 Chromite 56 nickel alloy 56 porphyrin 56 calcareous 56 peridot 56 cobalt 56 malachite 56 clasts 56 carnelian 56 citrine 56 quartz crystals 56 europium 56 oxide 56 nacre 56 nitride 56 isotopic composition 56 AlN 56 dopant 56 Niobium 56 sericite 55 ruthenium 55 igneous rock 55 zirconium 55 cerium 55 Magnetite 55 bismuth 55 titanium oxide 55 sulfide mineralization 55 GPa 55 zirconia 55 silica 55 sulfides 54 mica 54 mudstone 54 hafnium 54 galena 54 polycrystalline 54 hydride 54 magmas 54 sulfide 54 electron density 54 lapis 54 ultramafic rocks 54 chlorite 54 diffractive 54 mineralogy 54 topaz 54 Sulfide 54 limonite 54 massive sulphide deposits 54 tellurium 54 bornite 54 X ray diffraction 54 quartz crystal 54 rubidium