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(Click for frequent words.) 75 Mobile Metal Ions 70 lithogeochemical 70 geophysical geochemical 69 enzyme leach 69 Itigi Manyoni Uranium 69 Megatem 68 anomalous geochemical 68 IP Resistivity 68 Cordero Porphyry 68 petrography 68 mapping geochemical sampling 67 Preliminary metallurgical 67 Quebrada Verde 67 mineralogical studies 67 Enzyme Leach soil 67 geological mapping trenching 66 gravity geophysical surveys 66 CSAMT geophysical survey 66 Airborne Geophysical 66 IP induced polarization 66 geochemical assay 66 coincident geochemical 66 preliminary metallurgical testwork 66 VTEM airborne surveys 66 Geophysical surveys 66 airborne electromagnetic anomalies 66 HG Sulphide zone 66 Drilling Confirms 66 airborne magnetometer 66 Detailed geological mapping 66 surface outcrops 66 Metallurgical testwork 66 soil geochemical survey 66 mapping trenching 66 Soil geochemistry 66 VTEM surveys 65 process flowsheet 65 Las Boquillas 65 Riviere Dore 65 3D Induced Polarization 65 anomalous radiometric 65 Barite Hill 65 leachability 65 Airborne Magnetic 65 petrological 65 infill sampling 65 Confirms Continuity 65 Induced polarization 65 Geochemical sampling 65 stream sediment geochemical 65 petrographic studies 65 outcrop sampling 65 coincident geophysical 65 MegaTEM 65 Anomalous values 65 geochemical geophysical 65 Geological mapping 65 surface geochemical anomalies 65 petrographic 65 High Resolution Aeromagnetic 65 geophysical conductors 65 Titan# 65 Brucejack Area 65 Surface sampling 65 Uzboy 65 mineralogical characterization 65 airborne magnetometer survey 64 borehole geophysical 64 surface geochemistry 64 Sian Praso 64 Epithermal 64 Kena Property 64 UTEM 64 Ni Cu Pt Pd 64 excavator trenching 64 magnetic susceptibility 64 Xietongmen deposit 64 reconnaissance prospecting 64 Kasala Main Zone 64 molybdenum porphyry 64 magnetic electromagnetic 64 geophysics prospecting 64 Cobrecon 64 geologic geophysical 64 geophysics trenching 64 geophysical geological 64 induced polarization geophysical surveys 64 CSAMT 64 Bejucosa 64 REE bearing 64 Soil Geochemical 64 Canariaco Sur 64 XRF analysis 64 airborne geophysical anomalies 64 Senior Geochemist 64 VTEM targets 64 prospecting geological mapping 64 Sicera Sur 64 airborne radiometric survey 64 MMI soil geochemical 64 Mouchalagane 64 geochemical surveying 64 dipole dipole IP 64 advanced argillic alteration 64 Cu Au Mo 64 excavator trenches 64 Resistivity 64 airborne EM surveys 64 Talat Gadalla 64 induced polarization survey 64 mineralizations 64 geophysical interpretations 64 pathfinder element 64 metallurgical characteristics 64 MMI geochemistry 64 airborne radiometrics 64 soil geochemical surveys 63 calcrete sampling 63 resistivity geophysical 63 polymetalic 63 sericitic 63 Taricori 63 sylvinite 63 drillhole database 63 geochem 63 rhyolite tuffs 63 litho geochemical 63 Kay Tanda 63 chrome diopside 63 BHEM surveys 63 KIMs 63 ground magnetics 63 Electromagnetic EM 63 Soil geochemical 63 Airborne geophysics 63 detailed airborne magnetic 63 mapping prospecting 63 Geochemical 63 termite mound sampling 63 multielement 63 Detailed mapping 63 Near Surface 63 Radiometric 63 Ground geophysical surveys 63 TDEM 63 sulfide bearing 63 Uzboy gold deposit 63 Mineralogical 63 drillcore 63 adit sampling 63 Ntaka Hill 63 tri acid digestion 63 Mineralization Extended 63 Quantec Geoscience 63 Confirms Significant 63 Testwork 63 platinum Pt 63 magnetometric 63 geochemical assays 63 ground radiometric surveys 63 Colossus COOMIGASP joint venture 63 Atikwa Lake property 63 auger geochemical 63 Airborne Geophysical Surveys 63 Kaniago 63 ground radiometric surveying 63 Amaruk property 63 resistivity surveys 63 BIF outcrops 63 Au Cu Ag 63 geochemical 63 EM conductors 63 Induced Polarisation IP 63 dravite 63 Gwabe 63 electro magnetic EM 63 Magnetic susceptibility 63 airborne radiometric anomalies 63 Kutcho Project 63 Tres Juanes Norte 63 Itilima 63 Heap leach 63 Drilling Resumes 63 magnetite alteration 63 geochem anomalies 63 flotation testwork 63 borehole geophysics 63 chalcocite covellite 63 Colnic 63 copper molybdenum gold 63 downhole geophysics 63 anomalous geochemistry 63 Transworld Laboratories 63 Calandria Sur 63 Eagle Nest deposit 62 Roughrider East 62 auger drill 62 surface geochemical sampling 62 Ground geophysics 62 Kobada Mali 62 lithologic 62 EDXRF 62 Hushamu 62 element geochemistry 62 Wona SW Zone 62 fluorite mineralization 62 Airborne Survey 62 Shirotnaia zone 62 basal till 62 Igunda 62 Scintillometer 62 IOCG mineralization 62 Sulfato 62 Niobium Nb 62 mineralized outcrops 62 conductivity anomalies 62 Targets Identified 62 Radiometric surveys 62 Radiometric Survey 62 aeromagnetic survey 62 VTEM geophysical 62 IP geophysical anomalies 62 Geologic mapping 62 VTEM airborne survey 62 Zone Bambadinka 62 detailed geologic mapping 62 Simuku 62 geophysical interpretation 62 detailed aeromagnetic survey 62 mineralogical analysis 62 epithermal alteration 62 soil geochemistry 62 Njame 62 magnetometer survey 62 Drill Hole Locations 62 petrographic analysis 62 Ni Cu PGM 62 IP geophysical surveying 62 geological interpretations 62 Jiama Project 62 induced polarization geophysics 62 stream sediment geochemistry 62 magnetometry 62 quartz stockworks 62 Marta Norte 62 Emba Derho 62 mineralized zones intersected 62 hole RC# 62 rock geochemistry 62 airborne magnetics 62 geochemically anomalous 62 molybdenite mineralization 62 IP geophysical surveys 62 Minnova 62 dipole dipole 62 Snowfield Zone 62 Assay Results 62 Okohongo target 62 geologic modeling 62 airborne radiometric 62 Drilling Extends 62 Soil sampling 62 resolution airborne magnetic 62 weakly anomalous 62 Fayolle Property 62 antimony mineralization 62 Lithium Brine 62 aerially extensive 62 airborne radiometric magnetic 62 anomalism 62 airborne electro magnetic 62 AeroTEM III 62 resistivity surveying 62 Chalcopyrite 62 IP chargeability 62 sulphide mineralization intersected 62 variograms 62 Sierras Blancas 62 overburden sampling 62 EM geophysical survey 62 trenching sampling 62 Explor Resources 62 coincident magnetic 62 auger sampling 62 Metallurgical Testing 62 borehole Pulse 62 pyrite marcasite 62 anomaly coincident 62 arsenic antimony mercury 62 niobium Nb 62 multi element ICP 62 stockwork vein 62 VTEM Survey 62 Cobre Grande 62 volcanogenic massive sulfide 62 Represa Zone 62 Norpax Deposit 62 Gradient Array 62 Polymet Labs 61 Induced Polarisation 61 Sinchao Property 61 disseminated sulphide mineralization 61 Diabase Peninsula uranium 61 Mineral Resource estimation 61 Higo Blanco 61 Tiekoumala 61 rhodium Rh 61 downdip extension 61 Lower Acacus Formation 61 electromagnetic geophysical 61 kimberlite breccia 61 Nemegosenda Project 61 Hadal Awatib 61 Drill Hole Results 61 Cu Zn Ag 61 Dioulafoundou 61 ZTEM survey 61 stockwork veins 61 Puajanca Zone 61 IP resistivity survey 61 Lamaque Property 61 ODM# Zone 61 polymetallic mineralization 61 radiometric surveys 61 Rare Earth Element REE 61 geomechanical 61 Soquem 61 Extension Occurrence 61 gold copper porphyry 61 geological geochemical 61 radiometric readings 61 VLF surveys 61 Big Daddy Chromite 61 HLEM 61 magnetic geophysical surveys 61 IP Resistivity survey 61 Bulk Tonnage 61 airborne EM 61 mafic intrusions 61 MAG Silver Reports 61 chromites 61 anomalies coincident 61 airborne anomalies 61 Horizontal Loop Electromagnetic 61 uranophane 61 potentially bulk mineable 61 Banded Iron Formation 61 ground geophysical surveying 61 radon anomalies 61 Geochemical analyzes 61 Cerro Maricunga 61 IP chargeability anomalies 61 Ixtaca 61 MR# #C 61 pathfinder elements 61 Zn Ag 61 auriferous zones 61 MMI anomalies 61 airborne magnetic anomalies 61 element ICP analysis 61 gossans 61 Discovery Outcrop 61 downhole gamma probe 61 extensional drilling 61 Los Candelones 61 geological mapping geochemistry 61 Anomalous uranium 61 Solotomo 61 VTEM airborne 61 bulk tonnage mineralization 61 Takom 61 Copper Mineralization 61 radiometrics 61 diorites 61 Ni Cu PGM mineralization 61 anomalous radon 61 Wasamac property 61 Pierre Desautels P.Geo 61 Confirmatory 61 borehole electromagnetic 61 Black Thor chromite 61 Malundwe 61 Accurassay 61 felsic intrusive rocks 61 pyrometallurgical 61 quartz tourmaline breccia 61 lake sediment geochemical 61 CSAMT surveys 61 radiometric surveying 61 Copper Oxide 61 gold geochemical anomalies 61 Roughrider uranium deposit 61 mineralogical composition 61 surface trenching 61 Langmuir Property 61 Nithi Mountain 61 geochemical soil 61 stockwork breccia 61 silica breccia 61 carbonate veins 61 Soil Sampling 61 electromagnetic conductors 61 spectrometric 61 coincident chargeability 61 Cumpie Hill 61 conglomeratic 61 IOCG targets 61 Hurdman Property 61 trenching mapping 61 supergene mineralization 61 Canariaco Norte 61 Mikwam 61 Reflow Oven 61 outcropping mineralization 61 heap leach recoveries 61 Quantec Titan 61 Au Ag Cu Pb 61 Spectrometry 61 Positive Scoping Study 61 ZTEM 61 SGS Lakefield Laboratories 61 AMMTEC 61 gold anomalism 61 conductive anomalies 61 Grade Mineralization 61 induced polarization 61 Aircore drilling 61 Tagpura 61 geology geophysics 61 Moly Brook 61 subsurface geology 61 Porphyry Target 61 Imwauna Project 61 Caracucho 61 Clay Howells 61 galena pyrite 61 yttrium Y 61 conductive zones 61 magmatic nickel copper 61 geological mapping geochemical 61 CSAMT survey 61 silver indium 61 breccia hosted 61 Pharmacodynamic 61 CSAMT MT 60 geophysical conductor 60 geological mapping sampling 60 rockchip 60 NN Zone 60 Korkan target 60 Ruhuhu 60 BHEM 60 anomalous concentrations 60 uraniferous 60 platinum palladium mineralization 60 mineralized intrusive 60 Terraquest 60 Cu Ni 60 Ouro Roxo 60 soil geochemical sampling 60 airborne geophysical 60 Dr. Giles Peatfield 60 Dadiangou 60 Bulk sampling 60 Azulitas 60 mineralized gabbro 60 Delineation drilling 60 cobalt mineralization 60 Lone Pine Property 60 intersected weakly mineralized 60 unoxidized 60 intersected mineralized 60 sulphide mineralized 60 laterite mineralization 60 Eaglehead Property 60 WBJV Project 60 stepout drilling 60 Aricheng West 60 airborne VTEM 60 Copper Cu 60 auriferous mineralization 60 El Domo deposit 60 induced polarization IP 60 Bulk Sampling 60 Airborne Geophysical Survey 60 Prefeasibility Study 60 Ni PGE 60 Bokan Dotson Ridge 60 Exploration Drilling 60 carbonatite complex 60 soil geochemical 60 airborne geophysical surveying 60 Dogpaw Lake 60 ground magnetometer surveys 60 Gold Intersected 60 mineralized occurrences 60 Nyota Prospect 60 Pidgeon Molybdenum Deposit 60 Drill Targets 60 airborne electromagnetic EM 60 TSX VENTURE VMS 60 Analyte 60 outcropping vein 60 IP resistivity 60 Stratmat 60 Hambok 60 microdiamonds 60 VTEM airborne geophysical 60 aircore holes 60 exhalite 60 chalcopyrite copper 60 Allammaq 60 sulphide occurrences 60 Wicheeda 60 Kuriskova 60 Early Joli Fou 60 Rheological 60 caustic fusion diamond 60 copper molybdenum silver 60 XDS VLF EM 60 Spectroscopic 60 TDEM survey 60 geochemical analyzes 60 Induced Polarization 60 geology geochemistry 60 bulk minable 60 Infill Drilling 60 aeromagnetic anomalies 60 rhenium Re 60 Kimberlites 60 Macusani Yellowcake 60 IP geophysical 60 kimberlite indicator minerals 60 Y Zr 60 palaeochannel 60 induced polarization geophysical 60 macrodiamond 60 Ni Cu 60 Kavola East 60 anomalous Au 60 Fracture stimulation 60 ground geophysical surveys 60 Golouma South 60 mineralized skarn 60 hydrocarbon accumulations 60 Geophysical Surveys 60 borehole EM 60 DEEPEM 60 resolution aeromagnetic 60 Preliminary metallurgical testwork 60 Volcanogenic Massive Sulphide VMS 60 MEGATEM 60 Geotech Airborne Limited 60 ANIT 60 manganese mineralization 60 REE mineralized 60 Forestel Zone 60 Niblack Project 60 palladium Pd 60 Kutessay II 60 Drilling Continues 60 Vaquillas 60 La Mascota 60 DUB# 60 quartz dickite kaolinite alteration 60 Geochemical analysis 60 reconnaissance mapping 60 vanadium mineralization 60 Anomalous gold 60 portable XRF analyzer 60 Etango deposit 60 geologic geochemical 60 Athabasca unconformity 60 Yarumalito 60 soil geochemical anomalies 60 Adumbi Prospect 60 outcrop exposures 60 Metallurgical Testwork 60 auriferous quartz 60 Arap Tepe 60 PGM mineralization 60 CANALASKA URANIUM LTD 60 Cu Au porphyry 60 Felsic 60 Eastmain Mine 60 bulldozer trenching 60 mafic intrusives 60 Torlon Hill 60 induced polarization IP chargeability 60 Serrote Deposit 60 JAK Zone 60 spodumene rich 60 Ida Dome 60 mineralization encountered 60 scintillometer surveys 60 Jahodna 60 South Barnat 60 ultramafic sequence 60 Anuri kimberlite 60 Vynohradiv 60 Kanosak 60 STeP ® 60 transient electromagnetic 60 lapilli tuff 60 Zanzui 60 prospecting trenching 60 alunite 60 Gravity Survey 60 magnetic radiometric 60 Klaza property 60 cyanide extraction 60 chalcopyrite bornite 60 niobium tantalum 60 ODAE 60 Goldpines North 60 airborne magnetic anomaly 60 Sarfartoq 60 Geotech VTEM 60 Marta Este 60 ALS CHEMEX Laboratories 60 Kobada 60 Roughrider Uranium Deposit 60 Tantamaco 60 hole DDH# 60 Petrophysical 60 airborne electromagnetic 60 arsenopyrite veins 60 portable XRF 60 Pampa Sur 60 Roughrider uranium 60 structural lineaments 60 sulphide alteration 60 Commences Drill Program 60 Luhwaika 59 Fobiri 59 #TR# 59 Las Bolas deposit 59 microprobe 59 Microprobe 59 Assay Results From 59 kimberlitic 59 Cerro Vetas 59 G# garnets 59 soil geochemistry surveys 59 Jumping Josephine 59 gabbro dykes 59 Initial Resource Estimate 59 km induced polarization 59 Preliminary Scoping Study 59 Induced Potential 59 vein stockworks 59 geological interpretation 59 x ray absorption spectroscopy 59 Fkft 59 PEZGF FRANKFURT P5E Pediment 59 geological reconnaissance 59 Manzako Prospect 59 sulfide mineralization 59 GEOTEM survey 59 Desorption 59 Surface trenching 59 Diamond Drill Hole 59 arsenopyrite bearing 59 hydrocarbon reservoirs 59 Alaskite 59 VTEM anomalies 59 anomalous nickel 59 Geophysical Targets 59 Inferred Resource estimate 59 Gramalote property 59 potentially open pittable 59 alteration halos 59 airborne VTEM survey 59 metallogenic 59 illite 59 Cyanidation 59 olivine rich 59 Encino Vein 59 heap leach amenability 59 cherty 59 Cuiu Cuiu 59 Induced polarization IP 59 skarn alteration 59 airborne electromagnetic survey 59 Somituri Project 59 advanced argillic 59 silicification quartz 59 #-# Resource Estimate 59 trench sampling 59 untested geophysical 59 La Dura 59 sidewall cores 59 Alto Quemado 59 element ICP MS 59 Valle Esperanza 59 airborne magnetic survey 59 epithermal gold targets 59 eclogitic 59 Falea 59 Microstructure 59 diatremes 59 Linear Metals Corporation 59 aeromagnetic data 59 Zuun Mod deposit 59 electromagnetic geophysical survey 59 Huarabagoo 59 coincident anomalous 59 smithsonite 59 Resource Estimation 59 Geophysical surveying 59 Cu Mo Au 59 siliceous breccia 59 Induced Polarization IP chargeability 59 High Grade Intercepts 59 Heruga copper gold 59 lithium tantalum 59 Au Cu 59 metavolcanic rocks 59 geostatistical 59 pyrophyllite 59 Pt Pd 59 Lower Footwall Zone 59 kimberlite dykes 59 QAQC 59 Santa Pancha 59 Induced Polarization IP 59 Eastford Lake 59 Los Helados 59 Flow cytometry 59 VTEM survey 59 downhole geophysical 59 Inductively Coupled Plasma ICP 59 mapping geochemistry 59 niobium mineralization 59 mineralized breccias 59 Ciresata 59 website www.inter citic.com 59 Au Ag Cu 59 Footwall Zone 59 Emba Derho deposit 59 potassium feldspar 59 Otish Uranium 59 Tan Chaffao East 59 hole MJV 59 coincident magnetic anomaly 59 copper molybdenum mineralization 59 microprobe analyzes 59 gabbro intrusive 59 Huaixi 59 Ouro Verde deposit 59 Darnley Bay gravity 59 www.inter citic.com 59 InfiniTEM survey 59 Harena 59 Pokukrom East 59 backhoe trenching 59 Zn Au 59 mineralized hydrothermal 59 Brabant Lake 59 Colquipucro 59 Dios Padre 59 anomalous zinc 59 Veta Minitas 59 Garrcon 59 Birkhead Formation 59 mylonite 59 Adi Nefas 59 Croxall Property 59 Massive Sulfide 59 geological geophysical geochemical 59 Maki Medina 59 porphyry intrusions 59 West Pequop 59 pole dipole 59 Mongora 59 variography 59 Renard cluster 59 Kerekounda 59 induced polarization surveys 59 Suurikuusikko 59 aircore 59 Carheil 59 gravity gradiometry 59 geological mapping geochemical sampling 59 drillhole intersections 59 NITON 59 Sisson Brook 59 gravity anomalies 59 geologically mapped 59 Rio Zarza 59 aircore drilling 59 Mass Spectrometry ICP MS 59 McPhar 59 Sinivit 59 Dubenski property 59 magnetite skarn 59 stockwork veining 59 ankerite alteration 59 sulfidation style 59 mineralized breccia 59 aeromagnetics 59 linecutting 59 PGE mineralization 59 mineralogical 59 quartz sulphide vein 59 Harrier Underground 59 Nakru 59 near Schefferville Quebec 59 Nariin Sukhait 59 potash mineralization 59 chromium nickel 59 alteration assemblages 59 Tassawini 59 massive sulphide horizon 59 sheeted quartz 59 reconnaissance geological mapping 59 Cu Zn 59 Uranium Mineralization 59 Vicor Technologies Announces 59 structural stratigraphic 59 intrusive granitic 59 metal zonation 59 #:#,# scale [002] 59 Drilling Completed 59 ESO Uranium 59 Tombstone Exploration 59 outcrop stripping 59 bearing kimberlite 59 East Acma 59 VTEM conductors 59 spodumene pegmatite 59 EM anomalies 59 Zinc Mineralization 59 inversion modeling 59 tungsten tin 59 Gongondy 59 #ppb gold 59 Kaukua 59 tourmaline veins 59 Discovers Potential 59 -#:# GMT/# 59 stockwork mineralization 59 conductive anomaly 59 bioleach 59 Vetas Gold 59 Geotechnical drilling 59 geochemical surveys 59 Letitna 59 Radiometrics 59 NSAMT 59 Skukum 59 ST1 Zone 59 heliborne magnetic 59 mechanical trenching 59 Nortec Minerals 59 veins stockworks 59 metavolcanic 59 jasperoids 59 El Creston molybdenum 59 Cu Au mineralization 59 molybdenum tungsten 59 Central Mineralised Zone 59 SAMEX 59 Delineates 59 Sesmo Sur 59 Mr. Eupene 59 magnetic geophysical 59 Turnagain deposit 59 kimberlite lithologies 59 previously unsampled 59 ACTLABS 59 Kibi Project 59 gossan zones 59 sulphide mineral 59 anomalous chargeability 59 Seismic Data Processing 59 mineralized pegmatite 59 gossanous 59 scheelite bearing 59 quartz hematite 59 fusion XRF 59 microdiamond 59 arsenopyrite mineralization 59 anomalous molybdenum 59 EMD# encountered #.# 59 Tansy O'Connor Parsons 59 chlorite sericite 59 mineralized shear 59 SRK Consultants 59 Massive Sulphide 59 Rocher Deboule 59 CUMO 59 non dispersive infrared 59 BLEG 59 Cu Pb 59 electron diffraction 59 Geochemistry 59 electromagnetic EM survey 59 vuggy silica quartz alunite 59 holes #RB# 59 Lamothe Showing 59 Haquira Project 59 calc silicate 59 Bawone 59 Ni Cu mineralization 59 NI #-# Resource Estimate 59 Shivee West 59 kimberlitic indicator minerals 59 uranium mineralization intersected 59 geochemical samples 58 Yenac 58 alaskite hosted 58 MMI soil geochemistry 58 magnetite mineralization 58 geological mapping prospecting 58 Permeability 58 Koshaj 58 Rare Earth Element 58 resistivity anomalies 58 hole ZFRC# 58 Preliminary Assessment Report 58 DB#B# 58 Geophysical Survey 58 lithological contacts 58 Black Thor Chromite 58 auger drilling 58 supergene copper 58 Malrok 58 Bluesky formation 58 Skarn Zone 58 3D induced polarization 58 Erik Ostensoe P. Geo 58 resolution aeromagnetic survey 58 #m@#.# g t Au [002] 58 Lunguya 58 Beardmore Geraldton 58 Resource Calculation 58 geophysical signatures 58 Villeta T 58 TiTac 58 aeromagnetic surveys 58 magnetite pyrite 58 X Ray Diffraction 58 ultramafic rock 58 Sipopok 58 atmospheric leach 58 mineralized quartz veins 58 Apella Resources 58 Bororo Nuevo 58 porphyry intrusives 58 Rusk Zone 58 beryllium mineralization 58 Silver Mineralization 58 anomalous uranium 58 Abitibi Geophysique 58 Ciresata Porphyry 58 PdA Extension 58 wallrock 58 Aguila Cu Mo 58 Goldpines 58 Timmins Porcupine West 58 Zuun Mod molybdenum 58 mafic intrusive 58 underlying sulfide mineralization 58 REE occurrences 58 Bajo Negro 58 Hoyle Pond underground 58 Ethylbenzene 58 Southeast Pediment 58 TSX VENTURE UCU Ucore 58 Eagle Nest nickel 58 Niton XL3t 58 TSX ETG 58 Results Confirm 58 anomalous molybdenum values 58 Yaramoko 58 El Compas 58 intersect mineralization 58 Hotish 58 dickite 58 Muirs Reef 58 Cerro Moly 58 airborne magnetic 58 Klaza Zone 58 PGEs 58 coincident EM 58 Handcamp 58 holes #WR# 58 Receives Positive Results 58 VTEM geophysical survey 58 FRANKFURT E2G 58 Valle Hondo 58 VLF EM survey 58 Magnetometer 58 kimberlitic bodies 58 sulfosalts 58 Minita deposit 58 gold porphyry mineralization 58 IP geophysics