Related by context. Frequent words. (Click for all words.) 61 tourmaline 60 feldspar 59 calcite 58 malachite 57 quartzite 56 garnets 56 molybdenite 55 tungsten carbide 55 pyrite 54 olivine 54 granites 54 silica 54 mica 54 sapphire crystal 54 galena 54 breccias 54 quartz veins 54 sapphire 54 arsenopyrite 53 hematite 53 magnetite 53 opal 53 stockwork 53 tungsten 53 silicified 53 silicate 53 schist 53 brecciated 52 quartz vein 52 pyrrhotite 52 massive sulfide 52 andesite 52 breccia 52 basalt 52 chert 52 dolomite 52 sapphires 52 iridium 52 sphalerite 52 copper oxide 52 cobalt 52 aluminum oxide 52 disseminated sulphides 51 stockworks 51 sulphide 51 crystalline 51 gossan 51 massive sulphides 51 metasediments 51 volcanics 51 metallic 51 volcanic rocks 51 sulfides 51 felsic 51 sulphides 50 pegmatite 50 chalcopyrite 50 outcrop 50 iron oxide 50 mineralization occurs 50 silicification 50 rhyolite 50 zirconium 50 veinlets 50 sedimentary 50 carbonatite 50 quartz veining 50 massive sulphide mineralization 49 alkali 49 saprolite 49 zircon 49 shear zones 49 lithologies 49 sinter 49 polymetallic 49 mafic 49 amethyst 49 intrusive rocks 49 sulfide 49 volcanic rock 49 granodiorite 49 ductile 49 greenstone 49 obsidian 49 epithermal 49 hydrothermal alteration 49 oxidized 48 coarse grained 48 chromite 48 barite 48 massive sulphide 48 skarn 48 banded iron 48 veining 48 stainless steel 48 limestone 48 porphyry 48 silica sand 48 copper 48 granite 48 magmatic