Related by context. All words. (Click for frequent words.) 83 aeromagnetic survey 82 airborne magnetic 81 radiometric surveys 80 airborne geophysical survey 80 geophysical survey 80 magnetometer survey 79 airborne radiometric survey 79 VTEM survey 79 airborne magnetic survey 79 radiometrics 79 airborne geophysics 78 soil geochemical survey 78 airborne VTEM survey 77 VTEM surveys 77 airborne radiometric 77 geophysical surveys 77 airborne geophysical surveys 77 induced polarization survey 76 Induced Polarization 76 airborne electromagnetic survey 76 geochemical surveys 76 airborne electromagnetic 75 VTEM airborne survey 75 airborne EM survey 75 airborne radiometric anomalies 75 IP geophysical 75 airborne EM 75 ground geophysics 74 magnetic geophysical 74 IP resistivity 74 electromagnetic surveys 74 Geotech VTEM 74 Induced Polarization IP 74 aeromagnetic 74 ground geophysical surveys 74 airborne geophysical 74 soil geochemistry 74 soil geochemical surveys 74 geochemical sampling 74 Geotech Ltd. 73 resolution airborne magnetic 73 airborne magnetics 73 ground magnetics 73 magnetometer surveys 73 detailed airborne magnetic 73 stream sediment 73 Geological mapping 73 induced polarization 73 VTEM 73 induced polarization surveys 73 geochemical surveying 73 kilometer airborne magnetic 73 EM geophysical survey 73 Geophysical surveys 73 induced polarization IP 72 outcrop sampling 72 airborne VTEM 72 VLF EM survey 72 airborne radiometric magnetic 72 geochemical soil 72 electromagnetic EM survey 72 Detailed mapping 72 geophysical interpretation 72 aeromagnetic surveys 72 radiometric anomalies 71 resolution aeromagnetic survey 71 radiometric surveying 71 aircore drilling 71 detailed aeromagnetic survey 71 geological reconnaissance 71 AeroTEM III 71 reconnaissance prospecting 71 magnetometric 71 Geologic mapping 71 IP Resistivity survey 71 Geophysical Survey 71 IP resistivity survey 71 soil sampling 71 AeroTEM survey 71 geophysical surveying 71 soil geochemical 71 aeromagnetic data 71 airborne magnetometer survey 70 IP geophysics 70 airborne radiometrics 70 resistivity surveys 70 Soil sampling 70 ZTEM survey 70 IP geophysical surveys 70 Induced Polarisation IP 70 Detailed geological mapping 70 detailed geological mapping 70 soil geochemical sampling 70 Surface sampling 70 geological mapping 70 electromagnetic geophysical survey 70 auger drill 70 surface trenching 70 prospecting mapping 70 airborne geophysical anomalies 69 detailed geologic mapping 69 trench sampling 69 aeromagnetics 69 ground geophysical surveying 69 VLF surveys 69 magnetic electromagnetic 69 magnetic anomalies 69 Airborne Survey 69 electromagnetic VTEM survey 69 Geochemical sampling 69 mapping prospecting 69 infill sampling 69 Abitibi Geophysics 69 Fugro Airborne Surveys 69 InfiniTEM survey 69 radiometric geophysical survey 69 HLEM 69 magnetic anomaly 69 detailed airborne geophysical 69 CSAMT survey 68 induced polarization geophysical surveys 68 Airborne geophysics 68 scintillometer surveys 68 geochemical 68 MEGATEM survey 68 VTEM airborne 68 helicopter borne VTEM 68 heliborne magnetic 68 magnetic radiometric 68 conductive zones 68 ZTEM 68 airborne magnetic surveys 68 airborne magnetometer 68 induced polarization anomalies 68 airborne anomalies 68 diamond drilling 68 mechanical trenching 68 aeromagnetic anomalies 67 calcrete sampling 67 airborne magnetic anomalies 67 geological mapping prospecting 67 magnetic geophysical surveys 67 auger drilling 67 AeroTEM II 67 Soil geochemistry 67 magnetite mineralization 67 Airborne Geophysical Survey 67 RC drilling 67 geologic mapping 67 VTEM geophysical survey 67 geochemical anomalies 67 dipole dipole IP 67 induced polarization resistivity 67 CSAMT 67 radiometric magnetic 67 lithogeochemical 67 Ground geophysics 67 coincident magnetic 67 XDS VLF EM 67 IP chargeability anomalies 67 EM anomalies 67 induced polarization geophysical 67 mapping trenching 67 IP Induced Polarization 67 Megatem 67 meter spacing 67 IP induced polarization 67 radiometric anomaly 67 airborne magnetic radiometric 66 Mag EM 66 stream sediment geochemical 66 EM conductors 66 resistivity anomalies 66 gravity geophysical surveys 66 VTEM anomalies 66 Ruhuhu 66 Yanfolila 66 anomalism 66 geophysical targets 66 gradient array 66 Ground geophysical surveys 66 mineralized skarn 66 airborne geophysical surveying 66 VTEM airborne geophysical 66 Induced Polarisation 66 sampling trenching 66 auger sampling 66 IP Resistivity 66 TDEM 66 geophysical 66 Terraquest Ltd. 66 geochem 66 VTEM Survey 66 UTEM 66 3D Induced Polarization 66 Reconnaissance mapping 66 Nyota Prospect 66 Rare Earth Element REE 66 Banded Iron Formation 65 Reverse Circulation drilling 65 coincident geophysical 65 gamma ray spectrometry 65 uranium anomalism 65 2D seismic survey 65 radiometric 65 Geotech Ltd 65 electromagnetic conductors 65 mineralized outcrops 65 Letitna 65 anomalous zones 65 AeroTEM 65 radiometric airborne 65 VTEM anomaly 65 stream sediment geochemistry 65 anomalous mineralization 65 Geophysical surveying 65 anomalies coincident 65 magnetometry 65 Quantec Geoscience 65 enzyme leach 65 termite mound sampling 65 Soquem 65 soil geochemical anomalies 65 geologically mapped 65 ground radiometric surveys 65 soil anomalies 65 chargeability anomalies 65 VLF EM 65 surface geochemistry 65 geochemical geophysical 65 excavator trenching 65 linecutting 65 infill drill 65 magnetometric survey 65 Kay Tanda 65 airborne magnetic electromagnetic 65 surface outcrops 65 Radiometric surveys 65 IP chargeability 64 airborne electromagnetic EM 64 geochemical anomaly 64 airborne radiometric surveys 64 gossanous 64 anomaly coincident 64 Aircore drilling 64 gravity anomaly 64 anomalous radiometric 64 RAB drilling 64 geological mapping geochemistry 64 airborne electro magnetic 64 geochem anomalies 64 resolution aeromagnetic 64 VTEM airborne surveys 64 electromagnetic geophysical 64 mineralized intrusive 64 MEGATEM II 64 IP Resistivity surveys 64 Cu Ni 64 Aeroquest Limited 64 vanadium mineralization 64 geophysical conductors 64 prospecting geological mapping 64 Zafranal 64 airborne EM surveys 64 Cobrecon 64 geological modeling 64 PGM mineralization 64 Abitibi Geophysique 64 auriferous 64 Higo Blanco 64 preliminary metallurgical testwork 64 Aeromagnetic 64 gold anomalism 64 geophysics prospecting 64 coincident gravity 64 VLF EM surveys 64 geological geochemical 64 soil anomaly 64 grade drill intercepts 64 Radiometric 64 geophysical geochemical 63 EM conductor 63 Calandria Norte 63 Terraquest 63 Sicera Sur 63 REE bearing 63 BHEM surveys 63 trenching 63 extensional drilling 63 polymetallic mineralization 63 surface geochemical sampling 63 prospecting trenching 63 Preliminary metallurgical testwork 63 outcropping mineralization 63 scintillometer survey 63 geophysical anomaly 63 Highbank Lake 63 reconnaissance mapping 63 geochemistry anomalies 63 gossans 63 VTEM conductors 63 reconnaissance geological mapping 63 electromagnetic surveying 63 mineralized outcrop 63 aircore 63 Radiometric Survey 63 Time Domain Electromagnetic 63 northerly trending 63 geochemical samples 63 Geotech Airborne Limited 63 Bulk sampling 63 Sesmo Sur 63 aero magnetic 63 uraniferous 63 IOCG targets 63 gravity anomalies 63 Induced Polarization Survey 63 alteration zones 63 Roughrider East 63 IP chargeability anomaly 63 Infill drilling 63 RC drill 63 aircore drill 63 gold geochemical anomalies 63 Kaniago 63 Mouchalagane 63 MMI soil geochemical 63 borehole geophysics 63 anomalous soil geochemistry 63 manganese mineralization 63 anomalous uranium 63 mechanized trenching 63 mineralized horizon 63 diamond drillholes 63 RC drillholes 63 Ouro Roxo 63 magnetometer surveying 62 Diamond Drilling 62 EM geophysical surveys 62 VTEM targets 62 nickel sulphide mineralization 62 geological interpretation 62 Dubenski property 62 Black Thor chromite 62 adit sampling 62 geophysical conductor 62 TerraX 62 Tantamaco 62 TDEM survey 62 mineralized occurrences 62 disseminated sulphide mineralization 62 Soil geochemical 62 KIMs 62 Nkout 62 Fayolle property 62 drillholes 62 VTEM geophysical 62 geological mapping trenching 62 conductive anomalies 62 Quantec 62 CSAMT geophysical survey 62 Vaquillas 62 BLEG 62 Itigi Manyoni Uranium 62 soil sampling trenching 62 Preliminary metallurgical 62 drill holes 62 electro magnetic EM 62 copper molybdenum mineralization 62 trenching sampling 62 Akasaba Mine 62 Bejucosa 62 Induced Polarization Resistivity 62 excavator trenches 62 Quantec Geoscience Ltd. 62 overburden sampling 62 stringer mineralization 62 Gravity Survey 62 palaeochannel 62 MMI soil geochemistry 62 km 2D seismic 62 soil geochemical anomaly 62 electromagnetic anomalies 62 sylvinite 62 IP geophysical surveying 62 metallurgical testwork 62 Sian Praso 62 hydrothermal alteration 62 molybdenum mineralization 62 3D induced polarization 62 lake sediment geochemical 62 Emba Derho Adi Nefas 62 Pitaloza 62 mineralized quartz veins 62 mineralized corridor 62 sericitic 62 Induced polarization 62 MegaTEM 62 Metallurgical testwork 62 auger geochemical 62 electromagnetic EM conductors 62 sediment sampling 62 inferred resource estimate 62 ground radiometric surveying 62 stockwork mineralization 62 Lone Pine Property 62 calcrete 62 potash mineralization 62 petrographic studies 62 induced polarization geophysics 61 Cordero Porphyry 61 Au Cu mineralization 61 contracted Geotech Ltd. 61 magnetite alteration 61 geotechnical drilling 61 bearing sulphide mineralization 61 Thor Trend 61 copper anomalism 61 Oshiveli 61 Delineation drilling 61 El Compas 61 Z TEM 61 Fugro Airborne 61 gossan 61 hematite mineralization 61 downhole geophysical 61 mineralization encountered 61 vein stockworks 61 Grandroy 61 Zafranal Main Zone 61 Puella Bay 61 silica pyrite 61 electromagnetic anomaly 61 Las Boquillas 61 anomalous copper 61 Goldcliff 61 Main Homestake 61 geological mapping sampling 61 magnetic geophysical anomaly 61 Promontorio 61 uranium radiometric anomalies 61 chargeability anomaly 61 Airborne Magnetic 61 diamond drill 61 conductivity anomalies 61 Ikungu 61 McFauld 61 metallogenic 61 IP geophysical anomalies 61 Ni Cu PGM mineralization 61 Hotish 61 quartz sulphide veins 61 Uranium mineralization 61 #m@#.#g t gold [001] 61 copper mineralization 61 gold mineralization intersected 61 anomalous gold 61 mapping geochemical sampling 61 electromagnetic EM geophysical 61 Electromagnetic EM 61 NEVADO 61 Rusk Zone 61 Dadiangou 61 epithermal vein 61 intersected sulphide mineralization 61 epithermal veins 61 Fugro airborne 61 resource delineation drilling 61 Guayabales 61 Bajo Negro 61 sulphide bearing 61 Koshaj 61 Kanosak 61 Bellekeno deposit 61 Fayolle deposit 61 molybdenite mineralization 61 cobalt mineralization 61 intrusive breccia 61 kimberlitic material 61 Prefeasibility Study 61 InfiniTEM 61 silicified breccia 61 artisanal workings 61 diamond drill intercepts 61 bulk tonnage mineralization 61 Systematic sampling 61 penetrating electromagnetic 61 Airborne Geophysical 61 formation BIF 61 Aurizona Main 61 mineralized breccia 61 Breccia Zone 61 outcropping quartz veins 61 Cu Au mineralization 61 massive sulphide intersections 61 auriferous zones 61 delineation drill 61 Malundwe 60 resistivity surveying 60 resistivity anomaly 60 variably mineralized 60 Zone Bambadinka 60 vuggy silica quartz alunite 60 Pinguino property 60 Jumping Josephine 60 Mankarga 5 60 Fofina 60 banded iron 60 element geochemistry 60 Anuri kimberlite 60 Induced Potential 60 antimony mineralization 60 Itilima 60 advanced argillic alteration 60 anomalous geochemical 60 DEEPEM 60 Calandria Sur 60 Metallurgical Testing 60 Cumpie Hill 60 geochemical analyzes 60 ground magnetometer surveys 60 Grevet 60 chargeability 60 geochemically anomalous 60 Horizontal Loop Electromagnetic 60 Chiis 60 McFauld West 60 Cata Clavo 60 stepout drilling 60 Sudbury Breccia 60 litho geochemical 60 Tortigny 60 meter spacings 60 geochemical assays 60 Chimiwungo 60 Zona Alta 60 kimberlite dyke 60 geophysics trenching 60 termite mound geochemistry 60 granitoid bodies 60 El Creston 60 Leitch Sand River 60 volcanic stratigraphy 60 flotation testwork 60 #km# [004] 60 Santa Pancha 60 Mikwam 60 mineral occurrences 60 ultramafic rocks 60 nickel laterite mineralization 60 kimberlite breccia 60 geophysical anomalies 60 Kierens 60 Quantec Titan 60 hydrothermally altered 60 mineralized boulders 60 palaeochannels 60 aircore holes 60 approximately #km# [001] 60 Pidgeon Molybdenum Deposit 60 epithermal deposit 60 airborne radiometric anomaly 60 rock geochemistry 60 Thelon Basin 60 Sunbeam Pettigrew property 60 Poste Lemoyne Extension 60 Isambara 60 NI #-# resource 60 Shaft Zone 60 inferred resource calculation 60 massive sulphide mineralization 60 PGE mineralization 60 borehole Pulse 60 Kitenge Prospect 60 Reverse Circulation RC 60 Goldpines North 60 REE mineralized 60 Dogpaw Lake 60 Guayabito 60 Ixtaca 60 Fobiri 60 mafic dyke 60 3D seismic survey 60 geochemical assay 60 lithogeochemical sampling 60 kimberlite indicator minerals 60 kimberlite occurrences 60 Shining Tree 60 Crone Geophysics 60 Drilling Confirms 60 Tatajuba 60 mineralized diatreme breccia 60 Induced Polarization IP chargeability 60 UTEM survey 60 E#/# [001] 60 Airborne Surveys 60 Airborne EM 60 sulphide zones 60 induced polarization anomaly 60 uranium mineralization 60 disseminated sulphide 60 kilometer 2D seismic 60 BIF outcrops 60 NQ diamond drilling 60 South Miwah Bluff 60 kimberlitic 60 drillholes totaling 60 Ni Cu PGM 60 kimberlite dykes 60 Malrok 60 regolith mapping 60 ground geophysics trenching 60 TSX VENTURE MKR 60 pegmatite 60 Accha deposit 60 saprolitic 60 Aeroquest 60 geophysical surveys trenching 60 Kavola East 60 drillhole 60 MegaTEM II 60 Corachapi 60 #-# compliant resource 60 aeromagnetic anomaly 60 pole dipole 60 electromagnetic geophysical surveys 60 sulfide mineralization 59 Mt Penck 59 Juanicipio Vein 59 gold geochemical anomaly 59 porphyry mineralization 59 lateral extensions 59 anomalous soil geochemical 59 chromite mineralization 59 infill holes 59 airborne electromagnetic AEM 59 northwesterly trending 59 supergene zone 59 backhoe trenching 59 disseminated magnetite 59 REE mineralization 59 uranium occurrences 59 Pinaya 59 Goldcreek Property 59 Kelex 59 outcrop samples 59 Drill hole SADD# 59 Brucejack 59 sericite schist 59 Junnagunna 59 NE trending 59 REE showings 59 Pulse EM 59 skarn mineralization 59 bulldozer trenching 59 South Minita 59 pegmatite dykes 59 breccia zone 59 airborne EM anomaly 59 Yaramoko 59 Mineral Resource Estimate 59 Lac Levac 59 Purepoint 59 mineralized drill intercepts 59 BHEM 59 EM geophysical 59 PONTAX property 59 potentially bulk mineable 59 mineralized stratigraphy 59 SOMINE property 59 Encanto Zone 59 arsenopyrite mineralization 59 Dombraly 59 sulphide mineralized 59 kimberlite pipe 59 stockwork breccia 59 shear zone 59 petrographic 59 alaskite 59 Tres Or 59 updated Mineral Resource 59 Ida Dome 59 Etango deposit 59 skarn zones 59 Inferred Resource estimate 59 VTEM conductor 59 Drill Program 59 drillcore 59 magnetic lineaments 59 holes #WR# 59 McPhar 59 Renard cluster 59 quartz sulphide 59 mineralized intercepts 59 Pozo de 59 Luhwaika 59 Titan# 59 Au Cu 59 #m@#.#g t gold [002] 59 Dioulafoundou 59 Merensky Reef 59 Skarn Zone 59 petrophysical evaluation 59 mafic intrusive 59 lithologic 59 Uzboy 59 Tabita Prospect 59 Assay Results 59 Kangaluwi 59 Timmins Porcupine West 59 ANIT 59 downhole EM 59 DUB# 59 silica breccias 59 airborne magnetic anomaly 59 Macusani Plateau 59 Gongondy 59 copper molybdenum gold 59 Carbonatite Complex 59 Airborne Geophysical Surveys 59 Kipawa deposit 59 Singida Gold Project 59 quartz stockworks 59 Onkelo 59 Pellivuoma 59 Hibou dyke 59 geological mapping geochemical sampling 59 mineralized zones 59 massive sulphide lens 59 IOCG mineralization 59 Induced Polarization surveys 59 Reverse circulation 59 Ni Cu 59 Douay Ouest 59 Cuiu Cuiu 59 quartz adularia veins 59 Minera Afrodita 59 Riscos de Oro 59 Ntaka Hill 59 Tres Juanes 59 Intrusive Complex 59 Wasamac property 59 ultramafic rock 59 ultramafic sequence 59 mapping geochemistry 59 sheeted quartz veinlets 59 RRZE 59 previously undrilled 59 structural lineaments 59 Reverse Circulation 59 GEOTEM 59 Aappaluttoq 59 mineralized shear zone 59 ODAE 59 ultrabasic 59 coincident geochemical 59 diamondiferous kimberlite 59 downhole geophysics 59 dike swarm 59 radiometric readings 59 AHGZ 59 Adumbi Prospect 59 Farellon 59 massive sulfide mineralization 59 VTEM Airborne Survey 59 Barite Hill 59 mineralizations 59 scheelite bearing 59 Lac Pau 59 borehole geophysical 59 High Resolution Aeromagnetic 59 resource estimation 59 outcrop exposures 59 Anatacau Wabamisk 59 Snowfield Zone 59 NQ diamond 59 Haquira East 59 NNE trending 59 surface geochemical anomalies 59 Turnor Lake 59 JORC resource estimate 59 Los Zorros 59 JVX Ltd. 59 epithermal gold mineralization 59 stockwork zone 59 anomalous Au 59 magnetite bearing 59 Hurdman Property 59 Simuku 59 Vaca Muerta 59 Tortigny deposit 59 mineralized veins 59 airborne electromagnetic anomalies 59 stockwork vein 59 tungsten mineralization 59 Meliadine West 59 potassic alteration 59 bedrock conductors 59 infill drilling 59 Gramalote 59 Otish 59 km induced polarization 59 Klaza property 59 SJ Geophysics 59 Induced Polarization geophysical 59 iron carbonate alteration 59 Pb Zn 59 intersected mineralized 58 Mistassini 58 Represa deposit 58 northeast trending 58 Magistral deposits 58 Tagpura 58 geophysical induced polarization 58 geologic modeling 58 #m@#.# g t [002] 58 diatremes 58 Yarumalito 58 #WR# 58 sulphide mineralization 58 basal till 58 intrusives 58 Encino Vein 58 soil geochemistry anomaly 58 quartz sericite alteration 58 Dogpaw 58 MMI geochemical 58 mineralized horizons 58 Pokukrom East 58 lithocap 58 Incahuasi 58 MMI anomalies 58 drill intercepts 58 mineralized zones intersected 58 eluvial deposits 58 Kigosi 58 anomalous chargeability 58 NAD# [002] 58 subcrop 58 Condor de Oro 58 Enzyme Leach soil 58 Fugro Ground 58 ultramafic intrusives 58 kimberlitic bodies 58 OTD# 58 km2 3D seismic 58 gold mineralization 58 Shirotnaia zone 58 Carotare 58 diamond drillhole 58 mineralized pegmatite 58 mineralized shear zones 58 Onaman 58 Gowest 58 magnetic susceptibility 58 Pozo Seco 58 Detailed geologic mapping 58 dravite 58 Trenching 58 Handeni Gold Trend 58 structural lineament 58 Gradiometer 58 northwest trending 58 Emba Derho 58 geochemical signature 58 Cu Zn 58 Klappibacken 58 diatreme breccias 58 Gramalote property 58 Nithi Mountain 58 geophysics 58 Pokukrom West 58 Uranium Mineralization 58 Asankrangwa Holdings 58 silicified zone 58 mineralizing system 58 Cerro la Paila 58 Represa Zone 58 vein breccia 58 bulk sampling 58 geology geochemistry 58 Reconnaissance prospecting 58 stratabound 58 Seagull Intrusion 58 El Cometa 58 Roughrider uranium deposit 58 mafic intrusions 58 Footwall Zone 58 Igunda 58 Longitudinal Section 58 NQ diamond drill 58 Gossan Hill 58 Sulphide mineralization 58 Ni Cu PGE mineralization 58 Vindaloo zone 58 lateritic 58 Lalor deposit 58 stockwork quartz veins 58 MetalCorp 58 Greenstone belt 58 kimberlite float 58 magnetic VLF EM 58 Majescor 58 Muirs Reef 58 Sisson Brook 58 copper sulphide mineralization 58 LURC# 58 Clay Howells 58 Emba Derho deposit 58 electromagnetic conductor 58 massive sulphide zones 58 Anomalous values 58 Bellechasse Timmins 58 EW trending 58 Clavos 58 transient electromagnetic 58 Marban deposit 58 resistivity lows 58 Mineralisation 58 mineralized alteration 58 Atikwa Lake 58 polymetallic mineralized 58 Gold Anomaly 58 Lipena 58 jasperoid 58 extensive artisanal workings 58 delineation drilling 58 spectrometric 58 Malartic Lakeshore property 58 Moly Brook 58 trenching mapping 58 glacial overburden 58 stockwork veining 58 chromitite 58 Oro Amigo 58 open pittable 58 Buriti trend 58 Las Calandrias 58 grade mineralization intersected 58 quartz vein stockwork 58 Pucamayo 58 reverse circulation 58 silica alteration 58 Musley Deposit 58 conductive anomaly 58 Siribaya mega structure 58 Fayolle 58 felsic intrusive 58 holes RR# 58 #m@#.#g t [006] 58 prospective stratigraphy 58 Cordero Porphyry Belt 58 coincident anomalous 58 Lac Herbin mine 58 Qilaq 58 geological interpretations 58 magnetite ilmenite mineralization 58 massive sulphide lenses 58 MMI geochemistry 58 XRF analysis 58 epithermal gold targets 58 NYSE Amex FRG 58 outcropping vein 58 porphyry intrusion 58 Claim Blocks 58 tenement E#/# 58 mineralized vein 58 NNW trending 58 radiometric prospecting 58 Las Carolinas 58 Njame 58 Vizcachitas 58 VTEM Versatile Time 58 EM anomaly 58 diorite porphyry 58 exhalite 58 Fold Nose 58 Dioulafoundou zone 58 Lac Mantouchiche uranium 58 meta sediments 58 Explor Resources 58 vein outcrops 58 Cheowa 58 MEGATEM 58 Mongora 58 PacBay 58 Drill intersections 58 Tassawini 58 RC percussion 58 gold copper porphyry 58 Northcore Project 58 Teapot Granite 58 anomalous molybdenum values 58 vein breccias 58 borehole EM 58 kimberlite indicator mineral 58 Quebrada Verde 58 Hambok 58 kilometer airborne geophysical