Related by context. All words. (Click for frequent words.) 74 geological mapping trenching 73 prospecting geological mapping 72 Detailed geological mapping 70 sampling trenching 69 geological mapping prospecting 69 mapping prospecting 69 Detailed mapping 69 magnetic geophysical surveys 69 IP geophysical surveys 68 Geologic mapping 68 IP geophysics 68 Detailed geologic mapping 68 soil geochemical surveys 68 talus fines 68 geophysical surveys trenching 68 outcrop sampling 67 Induced polarization 67 electromagnetic surveying 67 ground radiometric surveys 67 prospecting mapping 67 Induced Polarization geophysical surveys 67 prospecting trenching 67 soil geochemical sampling 67 geochemical surveying 67 induced polarization surveys 67 geophysics prospecting 67 induced polarization geophysics 67 trenching sampling 66 IP Resistivity surveys 66 outcrop stripping 66 Reverse circulation 66 NQ diamond 66 ground magnetics 66 soil sampling trenching 66 reconnaissance geological mapping 66 geologically mapped 66 mapping trenching 65 auger drill 65 induced polarization survey 65 induced polarization geophysical surveys 65 Geological mapping 65 Geochemical analysis 65 ground magnetometer surveys 65 geophysics trenching 65 magnetometer surveys 65 radiometric surveys 65 Mobile Metal Ions 65 magnetometric 65 EM geophysical survey 65 coincident geophysical 65 detailed geologic mapping 65 airborne magnetometer 65 gravity geophysical surveys 64 IP induced polarization 64 HLEM 64 Induced Polarisation 64 Induced Polarization 64 Geophysical surveys 64 Airborne geophysics 64 magnetometer surveying 64 detailed airborne magnetic 64 trenching mapping 64 geochemical soil 64 magnetometer survey 64 mechanical trenching 64 IP Resistivity 64 outcrop exposures 64 detailed geological mapping 64 IP geophysical surveying 64 geological mapping geochemical 64 surface outcrops 64 rockchip 64 geological mapping sampling 64 Oro Amigo 64 geological mapping geochemistry 64 geological reconnaissance 64 Ground geophysics 64 3D induced polarization 64 radiometrics 64 geochemical sampling 64 anomalies coincident 64 proposed Bonanza Ledge 64 scintillometer surveys 63 surface geochemistry 63 sawn channel 63 geophysical geochemical 63 MMI soil geochemical 63 garnet skarn 63 airborne VTEM 63 pole dipole 63 stratigraphically below 63 Widely spaced 63 IP Resistivity survey 63 VLF EM surveys 63 granodiorite porphyry 63 hypabyssal 63 termite mound sampling 63 electromagnetic surveys 63 lithogeochemical 63 mapping geochemistry 63 excavator trenching 63 penetrating electromagnetic 63 geophysical surveying 63 soil geochemical survey 63 Timmins Porcupine West 63 geophysical interpretations 63 topographic surveys 63 trench sampling 63 airborne radiometric magnetic 63 MMI soil geochemistry 63 CSAMT 63 detailed aeromagnetic survey 62 Reverse Circulation 62 Reconnaissance mapping 62 mapping geochemical sampling 62 induced polarization 62 gossanous 62 coincident geochemical 62 geochemical samples 62 VLF surveys 62 downhole geophysics 62 phyllic altered 62 borehole geophysics 62 IP geophysical 62 silica pyrite 62 Induced Potential 62 stockworked 62 Soil geochemistry 62 stream sediment geochemistry 62 surface geochemical sampling 62 surface trenching 62 resistivity surveys 62 mechanized trenching 62 mafic intrusives 62 ground radiometric surveying 62 geologic mapping 62 downhole geophysical 62 electromagnetic EM survey 62 termite mound geochemical sampling 62 basal till 62 mineralogical studies 62 heliborne magnetic 62 geochemical surveys 62 magnetometry 62 Anuri kimberlite 61 meter spacings 61 outcropping mineralization 61 stream sediment geochemical 61 stockwork breccia 61 soil geochemistry surveys 61 ground geophysics 61 Induced Polarization surveys 61 IP resistivity 61 auger sampling 61 Aricheng West 61 ground geophysical surveys 61 regolith mapping 61 diamond coring 61 Pivert East 61 stream sediment 61 conglomeratic 61 XDS VLF EM 61 induced polarization resistivity 61 Megatem 61 gold geochemical anomalies 61 monzonite intrusion 61 magnetic geophysical anomaly 61 Las Boquillas 61 induced polarization IP 61 Au Cu Ag 61 mineralized zones intersected 61 Itilima 61 VTEM airborne surveys 61 scintillometer survey 61 Ni Cu PGM mineralization 61 Los Candelones 61 magnetic electromagnetic 61 Alaskite 61 multielement 61 NSAMT 61 infill sampling 61 WDC# 61 geochemical assay 61 magnetic geophysical 61 electromagnetic geophysical survey 61 Induced polarization IP 61 linecutting 61 intersected sulphide mineralization 60 excavator trenches 60 TiTac 60 aeromagnetics 60 Tungsten Molybdenum 60 petrographic studies 60 resistivity geophysical 60 DDH# [001] 60 intersected disseminated 60 vein outcrops 60 soil geochemistry 60 Notch kimberlite 60 Gradient Array 60 Marban deposit 60 calcrete 60 kimberlite outcrop 60 hematite goethite 60 mineralized quartz 60 calcrete sampling 60 Langmuir Project located 60 Dogpaw Lake property 60 Induced Polarization IP 60 geophysics geochemistry 60 magnetic susceptibility 60 Leprechaun Pond 60 Pimenta Bueno 60 3D Induced Polarization 60 Anomalous values 60 litho geochemical 60 sulfide bearing 60 Rare Earth Element REE 60 IP Induced Polarization 60 colluvial 60 Kierens 60 kimberlitic material 60 Puella Bay 60 dipole dipole IP 60 gold arsenic antimony 60 IP resistivity survey 60 Simuku 60 soil sampling 60 Cumpie Hill 60 Soil sampling 60 Bellechasse Timmins deposit 60 borehole EM 60 radiometric surveying 60 EM geophysical 60 sheeted quartz 60 Cobrecon 60 Discovery Outcrop 60 BLEG 60 Santa Pancha 60 quartz hematite 60 electromagnetic EM geophysical 60 Sicera Sur 60 Kenwest 60 Buriti trend 60 radiometric prospecting 60 uraniferous 60 soil geochemical 60 Induced Polarisation IP 60 coincident anomalous 60 ultramafic intrusives 60 Skouries copper gold 60 Douay Ouest 60 Renard cluster 60 radionuclide detection 60 aircore 60 Central Mineralised Zone 59 Zone Bambadinka 59 gradient array 59 Lupoto Copper Project 59 stope delineation 59 subvolcanic 59 bulldozer trenching 59 Ground geophysical surveys 59 Gaoua copper gold 59 Outcropping 59 alluvials 59 vein stockwork 59 ground geophysics trenching 59 electromagnetic geophysical 59 Majuba Hill 59 geotechnical logging 59 turbidite 59 Las Carolinas 59 mineralized outcrops 59 angular boulders 59 Hushamu 59 geological mapping 59 drilling coring 59 porphyry breccia 59 lake sediment geochemical 59 Quantec Titan 59 Penasco Quemado 59 airborne EM 59 silicified rhyolite 59 AeroTEM III 59 Cordero Porphyry 59 UTEM 59 MMI anomalies 59 km induced polarization 59 geochem 59 brecciated silicified 59 Veta del Contacto 59 Geophysical Survey 59 downhole EM 59 BHEM 59 Teapot Granite 59 reconnaissance mapping 59 petrographic 59 greisen 59 Dombraly 59 north easterly trending 59 disseminated stringer 59 Mouchalagane 59 Lunguya 59 spectrometric 59 #m@#.#g t Au [001] 59 airborne geophysical surveying 59 @ #.#g t [001] 59 Ayelen Vein 59 alluvial gravels 59 Systematic sampling 59 Breccia Ridge 59 Strawberry Flats 59 northeast trending sheeted 59 Chalchihuites 59 variably mineralized 59 BIF outcrops 59 underground adits 59 intersected mineralized 59 veins stockworks 59 Lupoto 59 Gramalote property 59 induced polarization geophysical 59 VTEM airborne survey 59 rock geochemistry 59 MegaTEM 59 geophysical conductors 59 outcrop subcrop 59 Fry Inlet 59 spodumene bearing 59 Geotech VTEM 59 pyrite altered 59 lapilli tuff 59 Guajes West 59 Roughrider East 59 m@#.# g t Au [002] 59 gold anomalism 59 Eastmain Mine 59 airborne electromagnetic EM 59 Farellon 59 cherty 59 sericitic 59 Felsic 59 sulphide breccia 59 quartz pyrite veins 59 steeply dipping fault 59 Tres Juanes Norte 59 anomaly coincident 59 airborne geophysical anomalies 59 Hibou dyke 59 Preliminary metallurgical testwork 59 Sahavaara 59 Kena Property 59 potassically altered 59 Klaza Zone 59 airborne magnetic radiometric 59 Itigi Manyoni Uranium 59 Geochemical sampling 59 sulfidation style 59 Lupita Mine 59 Cassiar Moly property 59 seismic refraction 59 Airborne EM 59 TDEM 59 VLF EM survey 59 Gossan Hill 59 InfiniTEM survey 59 geophysical surveys 58 adit sampling 58 quartz vein stockwork 58 intersected silicified 58 composited assay 58 sediment sampling 58 evaporite 58 aircore drill 58 Lamothe Showing 58 #m@#.#g t Au [003] 58 chalcopyrite bornite 58 strongly silicified 58 Pilunani 58 Calandria Norte 58 trenching pitting 58 Lac Pau 58 scintillometers 58 felsic intrusive rocks 58 borehole electromagnetic 58 Forestel Zone 58 airborne magnetic 58 #m downhole 58 Dogpaw Lake 58 Au Cu mineralization 58 drillcore 58 Riviere des Plantes 58 Detrital 58 airborne radiometric 58 petrological 58 Radiometric 58 geochemical 58 Induced Polarization Resistivity 58 trenching 58 VTEM conductor 58 #m@#.#g t [006] 58 gold mineralized quartz 58 VTEM anomalies 58 +# ppb 58 Geochemical analyzes 58 anomalism 58 geochem anomalies 58 resistivity surveying 58 Anchaca 58 dacitic 58 delineation drill 58 aircore drilling 58 saprolitic 58 Surface trenching 58 Mt Penck 58 drillhole spacing 58 EW trending 58 Sian Praso 58 RC percussion 58 BB# [002] 58 VTEM geophysical 58 relogging 58 VTEM airborne geophysical 58 intersected kimberlite 58 Quantec Geoscience 58 induced polarization anomalies 58 Palaeozoic sedimentary 58 altered silicified 58 magnetite bearing 58 Culebrilla 58 strikelength 58 metres@#.# % [002] 58 Completes Airborne 58 NQ diamond drill 58 resource delineation drilling 58 bearing quartz carbonate 58 reconnaissance prospecting 58 Nkran 58 Hallnor 58 geochemical geophysical 58 anomalous soil geochemistry 58 Calandria Sur 58 westerly dipping 58 quartz sulphide vein 58 porphyry skarn 58 Grandroy 58 scheelite 58 Don Ese 58 helicopter borne VTEM 58 Titan# 58 Nemegosenda Project 58 volcanic tuffs 58 serpentinized 58 WAT# #A 58 dipole dipole 58 Tib Lake 58 pyrite pyrrhotite chalcopyrite 58 Aappaluttoq 58 sulphide mineralized 58 Bisha Main 58 #:#,# scale [002] 58 altered rhyolite 58 underground delineation drilling 58 ground geophysical surveying 58 copper skarn 58 geological mapping geochemical sampling 58 olivine rich 58 subcrop 58 #m@#.# % [003] 58 uranium anomalism 58 Dioulafoundou 58 rockfill 58 #m@#.#g t gold [001] 58 Las Bolas deposit 58 REE mineralized 58 Fuwan 58 Hondo Valle 58 Sicera Norte 58 BHEM surveys 58 airborne magnetics 58 pediment gravels 58 #g t Au [001] 58 airborne radiometric anomalies 58 Lemarchant Prospect 58 anomalous geochemistry 58 Ag Pb Zn 58 ALS CHEMEX Laboratories 58 magnetite ilmenite mineralization 58 radiometric magnetic 58 Dubenski Shaft Zone 58 hydrothermal brecciation 58 gabbro dyke 58 Vianey Mine 58 Pasfield Lake 58 Electromagnetic EM 57 outcrop samples 57 intersected weakly mineralized 57 Norlartic 57 electro magnetic EM 57 pyrophyllite 57 #m@#.#g t Au [005] 57 Separation DMS 57 Lemarchant 57 Highbank Lake 57 holes RR# 57 mineralized felsic 57 chloritized 57 magnetite BIF 57 mineralized skarn 57 Commences Drill Program 57 Santa Eduwiges 57 petrography 57 hole MJV 57 Bornite 57 #m@#.# g t Au [005] 57 Bejucosa 57 soil geochemistry anomalies 57 sheared ultramafic 57 bedrock outcrops 57 #.#gpt gold [001] 57 abundant pyrite 57 Riscos 57 Tortigny deposit 57 palaeochannel 57 REE bearing 57 Preliminary metallurgical 57 Yaramoko 57 Despoblados 57 monzodiorite 57 Y Zr 57 Maybrun 57 Gold Oxide Skarn 57 Bonanza Ledge Zone 57 #m@#.# % [001] 57 Tiriganiaq 57 ppm Nb 57 manto style 57 Significant assay 57 Debarwa deposit 57 anomalous geochemical 57 mineralized outcrop 57 averaging #.#g t [001] 57 siliceous sediments 57 Chimiwungo 57 Las Bolas Los Hilos 57 Vargbacken 57 brecciated quartz 57 Nueva Caledonia 57 Horizontal Loop Electromagnetic 57 Norrliden Polymetallic Deposit 57 Lynx Hibou system 57 El Compas 57 MR# #C 57 Ciresata deposit 57 Hosco pit 57 Williamson Mwadui 57 previously unsampled 57 Butia prospect 57 Santa Eduwiges mine 57 magnetic VLF EM 57 MMI geochemistry 57 VTEM surveys 57 Encino Vein 57 assaying protocols 57 porphyritic intrusive 57 #m@#.# % [002] 57 Lithology 57 approximately #km# [002] 57 Cannivan Gulch 57 Enzyme Leach soil 57 gossans 57 KBDD# 57 Matala deposit 57 dunite 57 Soil geochemical 57 DEEPEM 57 Massive Sulphide VMS 57 unoxidized 57 metres@#.#g t gold 57 Induced Polarization Survey 57 Main Shear Zone 57 #:# scale 57 #.#g t gold [005] 57 Los Hilos 57 Anatacau Wabamisk 57 airborne geophysics geological mapping 57 overburden stripping 57 B Chromitite 57 Malrok 57 Extension Occurrence 57 Nithi Mountain 57 intense silicification 57 Zuun Mod deposit 57 Sipopok 57 Mechanical trenching 57 intersected mineralized zones 57 Laterite 57 Magnetometer 57 sericite altered 57 geochemical assays 57 Camflo 57 Chalcopyrite 57 #.#g t [004] 57 High Resolution Aeromagnetic 57 structural lineaments 57 ENE trending 57 outcropping veins 57 intensely silicified 57 Cu Pb Zn Ag 57 chlorite sericite 57 Nueva Concepcion 57 auger drilling 57 porphyry intrusives 57 CSAMT survey 57 copper anomalism 57 geochemical analyzes 57 hydrothermal alteration indicative 57 Magnetic susceptibility 57 grading #.#g t [002] 57 Tagpura 57 AHGZ 57 outcropping quartz veins 57 Dienemera 57 element ICP analysis 57 #TR# 57 Las Bolas structure 57 #m@#.#g t Au [004] 57 geochemistry geophysics 57 argentiferous 57 pelitic gneiss 57 sheeted quartz veinlets 57 South Minita 57 Drilling Extends 57 Cretaceous Jurassic 57 Kangaluwi 57 altered granodiorite 57 Gwabe 57 Confirms Continuity 57 quartz sericite alteration 57 gold copper porphyry 57 VLF EM 57 Induced Polarization IP chargeability 57 Kay Tanda 57 Time Domain Electromagnetic 57 mineralized drill intercepts 57 Adi Nefas 57 radiometric survey 57 HQ diameter 57 palladium Pd 57 quartz tourmaline breccia 57 sphalerite galena 57 northerly trending 57 Nyafe 57 hole CJV 57 backhoe trenching 57 #SH# 57 lithogeochemical sampling 57 Korkan target 57 Pulse EM 57 alkaline leaching 57 subhorizontal 57 Delcer Buttes 57 vat leach 57 structural stratigraphic 56 tonalitic 56 variably altered 56 vein stockworks 56 intersected #.#m [002] 56 systematic geochemical sampling 56 Muskox kimberlite 56 #m@#.# g t Au [002] 56 Poste Lemoyne Extension 56 Tatajuba 56 airborne electro magnetic 56 auriferous zones 56 Goldpines North 56 airborne geophysics 56 Bulk sampling 56 outcropping vein 56 shallow laterally 56 augering 56 resolution airborne magnetic 56 manganese mineralization 56 biotite rich 56 #,# ft. perf 56 LURC# 56 Zam Zam Shenkman 56 Kalumines Copper Cobalt 56 Amun Deeps 56 strongly altered mafic 56 Qualified Person overseeing Lydian 56 #ppb [002] 56 Significant intercepts 56 hole EJD# 56 airborne radiometric survey 56 Valle Hondo 56 NQ diameter 56 Hambok 56 Ayelen vein 56 Sudbury breccia 56 vuggy silica quartz alunite 56 Kalana Mine 56 intersected anomalous 56 #ppm Mo 56 IP geophysical anomalies 56 Lower Acacus Formation 56 Scadding Gold 56 Eastford Lake 56 Longshot Ridge 56 Sissingue 56 advanced argillic 56 #m@#.# % [006] 56 Silverstreams 56 surficial 56 alunite alteration 56 Huarabagoo 56 subsurface soils 56 calcareous sediments 56 hole RC# 56 Bronson Slope deposit 56 NNE trending 56 TRD# 56 #.#gpt Au [001] 56 pyrrhotite chalcopyrite 56 mylonite 56 andesitic 56 quartz veinlet 56 garimpos 56 Longshot Ridge copper 56 scheelite bearing 56 phyllosilicate 56 Amaruk property 56 anomalous Au 56 graphitic sediments 56 trending mineralized 56 airborne electromagnetic 56 potentially bulk mineable 56 lithium boron 56 Haukiaho 56 N#U# 56 alaskite hosted 56 quartz ankerite 56 geophysical induced polarization 56 Klappibacken 56 mineralized quartz veins 56 El Cometa 56 El Manto 56 Expands Mineralization 56 #COM# 56 intrusive breccia 56 quartz biotite 56 quartz veined 56 silica carbonate 56 El Cafetal La Virgen 56 Significant intersections 56 airborne EM anomaly 56 geophysically logged 56 Cerro la Paila 56 eclogite 56 element geochemistry 56 Big Daddy Chromite 56 pyrite stockwork 56 Reconnaissance prospecting 56 Regcourt 56 Sindesar Khurd 56 T Vanadium Iron 56 Higo Blanco 56 HZ# 56 felsic dikes 56 IOCG targets 56 lithogeochemical samples 56 meter spacing 56 Cu Mo Au 56 ankerite 56 Ccaccapaqui 56 Bracemac Zone 56 Ouro Verde deposit 56 aero magnetic 56 Analytical Protocols 56 Dogpaw No. 56 Skukum 56 maritime subsurface 56 holes #WR# 56 epithermal quartz 56 quartz barite 56 #km 2D seismic 56 quartz feldspar 56 silicified breccia 56 PONTAX property 56 approximately #km# [001] 56 Strawn Limestone 56 auger geochemical 56 volcano sedimentary belt 56 volcaniclastics 56 South Miwah Bluff 56 resource delineation 56 Anomalous uranium 56 #m@#.#g t gold [002] 56 Cretaceous sandstone 56 rhyodacite 56 ZTEM survey 56 magnetite mineralization 56 Lang Exploratory Drilling 56 Charly vein 56 La Morocha 56 Bulk Leach Extractable 56 exhalite 56 geology geochemistry 56 intersected massive sulphide 56 kimberlite breccia 56 Bongará 56 J1B 56 metallurgical hydrological 56 hematitic 56 dolostone 56 Mala Noche Footwall Zone 56 talc chlorite 56 ground truthing 56 layered ultramafic 56 skarn alteration 56 Aeromagnetic 56 Cañariaco Norte 56 Djambaye II 56 Hotish 56 Reverse Circulation drilling 56 intersected sulphide 56 intersected anomalous radioactivity 56 Boxey Point 56 ultramafic sill 56 magnetite alteration 56 Leitch Sand River 56 Skarn Zones 56 Lemarchant prospect 56 quartz sericite pyrite 56 Miwah Gold Zone 56 Dargues 56 pyrite marcasite 56 Mothae pipe 56 Gas Hydrocarbon SGH 56 while drilling LWD 56 WNW trending 56 quartz feldspar porphyry intrusive 56 antimony Sb 56 MMI anomaly 56 malachite mineralization 56 Pantanillo 56 Koshaj 56 Airborne Geophysical Survey 56 Veta Sur vein 56 Xstrata Copper Las Bambas 56 kimberlite indicator minerals 56 EJD# 56 copper molybdenum mineralization 56 Kena Gold 56 chalcedonic 56 JVX Ltd. 56 hematite stained 55 dravite 55 C1 C4 55 zinc indium 55 mineralized stratigraphy 55 Iron Titanium Vanadium 55 airborne magnetic electromagnetic 55 eluvial 55 borehole Pulse 55 TerraX 55 Pokukrom East 55 magnetometric survey 55 JAK Zone 55 itabirite 55 silica breccia 55 Pokukrom West 55 #WR# 55 Los Mantos 55 caustic dissolution 55 Kinyambwiga gold 55 altered dacite 55 Geophysical Surveys 55 Ag Pb 55 Trench TKB# 55 Malartic Lakeshore property 55 enzyme leach 55 Huajoto 55 DDH IAX 55 Cu Au Mo 55 TGDH#D 55 PdA Extension 55 Coarse reject 55 Barite Hill 55 El Creston molybdenum 55 andesite volcanics 55 Kitenge Prospect 55 stockwork vein 55 siliciclastic 55 Ronguen gold 55 alaskite 55 uranium molybdenum rhenium 55 uraniferous boulders 55 Mineralized intercepts 55 Holes EC# 55 mineralized diorite 55 Junnagunna 55 metres@#.# g t Au [002] 55 norite 55 extensional drilling 55 anastomosing 55 Dubenski Gold 55 mineralogical characterization 55 Batero Quinchia 55 mineralogical analysis 55 Kingurutik River 55 multi element ICP 55 Arap Tepe 55 Cerro Maricunga 55 airborne electromagnetic survey 55 #ppb gold 55 Villeta T 55 alaskites 55 massive pyrrhotite 55 Geotechnical drilling 55 syenite intrusive 55 alluvial diamond deposits 55 Gurupi 55 Kau# 55 section #E [004] 55 Pasacancha Ag Au 55 MetalCorp 55 Tabakoto Pit 55 Nyota Prospect 55 Oshiveli 55 Mag EM 55 Turnor Lake 55 Bellechasse Timmins 55 vein assayed 55 gridding 55 Pastos Grandes 55 Balarat Project 55 Colnic 55 metavolcanic 55 drill hole SADD# 55 #ppb Au [002] 55 Osisko Releases 55 variably silicified 55 Eskay Creek Silbak Premier 55 acid leached 55 alteration assemblages 55 clastic rocks 55 palaeo channel 55 breccia mineralization 55 volcaniclastic rocks 55 tuffaceous 55 drilled directionally 55 transient electromagnetic 55 geomechanical 55 Wachigabau 55 anomalous REE 55 spodumene pegmatite 55 Onaman 55 tonne Au 55 Birimian metasediments 55 Quebrada Verde 55 DDH E# 55 IP chargeability anomalies 55 pyritized 55 geologic geochemical 55 Magistral Mine property 55 mechanized auger 55 Jumping Josephine 55 Klaza property 55 IP chargeability 55 EM conductors 55 grading #.#g t [001] 55 @ #.#g t [003] 55 geochemical anomalies 55 Surface sampling 55 Pan de Azucar 55 surface geochemical anomalies 55 sulphide stringer 55 Namoya Summit 55 leachable chalcocite 55 iron carbonate alteration 55 airborne radiometrics 55 #g t Ag [001] 55 lithology alteration 55 El Rayo Silver 55 acid soluble 55 Magusi deposit 55 TDEM survey 55 Mankarga Zone 55 molybdenite occurs 55 Pampa Sur 55 Moly Brook 55 sedex 55 anomalous mineralization 55 -Wauk 55 underlying sulfide mineralization 55 Resistivity 55 Jurassic sandstone