Related by context. Frequent words. (Click for all words.) 78 oxidized 66 siliceous 63 chlorite 63 sulfides 63 chalcocite 62 sericite 62 graphitic 61 supergene 61 MgO 61 oxidization 61 iron oxides 61 oxidizes 60 sulphide bearing 60 olivine 59 biotite 59 banded iron 59 monolayer 59 sulphides 59 limonite 59 calcareous 59 peridotite 59 carbonaceous 58 ultramafic rocks 58 carbonate 58 pyritic 58 hydroxide 58 sulphates 58 sulphide ore 58 interbedded 58 soluble 58 mafic volcanics 58 sulphate 58 adsorbed 58 sulphide 57 SiO2 57 stratabound 57 feldspar 57 silicified 57 iron oxide 57 oxidation 57 silica 57 spodumene 57 intrusive rocks 57 hydroxyapatite 57 acidified 57 hematite 57 Sulfate 57 gabbro 57 bornite 57 silicates 56 galena 56 oxidizing 56 disseminated pyrite 56 alkali 56 brecciated 56 silicate 56 calcite 56 agglomerate 56 arsenopyrite 56 jasperoid 56 felsic 55 aluminum oxide 55 oxalic acid 55 micelles 55 basaltic 55 tuffs 55 sulfide 55 mudstone 55 saprolite 55 friable 55 apatite 55 intrusives 55 Zn 55 basalts 55 hydrothermal breccias 55 oxidize 55 aqueous solution 55 breccia zones 54 metasedimentary rocks 54 colloid 54 breccias 54 siltstone 54 gossan 54 metasediments 54 magnesium oxide 54 oxalate 54 hydrolysis 54 oxide 54 acidic 54 carbonic acid 54 Magnetite 54 limestones 54 skarn mineralization 54 molybdenite 54 borate 54 copper oxide 54 veinlets 54 sulfide mineralization 54 facies 54 carbonatite 53 ultramafic