Related by context. Frequent words. (Click for all words.) 60 isotopic composition 60 isotope ratios 60 carbonaceous 60 elemental composition 59 silicates 59 iron oxides 58 spinel 58 osmium 58 aragonite 57 olivine 57 boron nitride 57 hematite 57 nanosized 57 monazite 56 apatite 56 nanoclusters 56 manganese oxide 56 Geochemistry 55 corundum 55 samarium 55 uranium thorium 55 haematite 55 graphitic 55 biogeochemistry 55 morphologies 55 electrically conducting 55 calcite 55 abundances 55 Fig. 1A 55 silicate 54 zircons 54 igneous rocks 54 boson 54 nanoporous 54 anisotropy 54 basalts 54 iridium 54 copper oxides 54 PGEs 54 marine sediments 54 clasts 54 spectroscopic 54 mineralogy 54 inorganic compounds 54 photochemistry 54 kimberlitic 54 microfossils 53 icy moons 53 biogeochemical 53 Earthlike 53 ALH# 53 scanning electron microscopy 53 subcellular 53 magmas 53 nanoscopic 53 spherules 53 stromatolites 53 lavas 53 siliceous 53 nanocrystalline 53 cuprates 53 perovskite 53 oceanic crust 52 micrometre 52 nacre 52 basaltic 52 submicroscopic 52 iron oxide 52 transmission electron microscopy 52 oxygen isotopes 52 foraminifera 52 noctilucent clouds 52 Lunine 52 aerosol particles 52 x ray diffraction 52 biogenic 52 fluorescently labeled 52 lunar soil 52 plasmon 52 hydrothermal vent 52 magmatic 52 nanomechanical 52 macroscopic 52 ejecta 52 undersea volcanoes 51 lithosphere 51 CRISM 51 solar nebula 51 electron density 51 biomolecule 51 garnets 51 microstructures 51 superconductive 51 metamorphic rocks 51 MgO 51 hydrothermal activity 51 hydroxyapatite 51 gneisses 51 cerium oxide 51 kimberlite indicator minerals 51 igneous rock