Related by context. All words. (Click for frequent words.) 73 airborne radiometric 71 airborne magnetic survey 71 airborne electromagnetic 70 airborne radiometric survey 70 radiometric surveys 69 airborne EM 69 airborne magnetic 69 electromagnetic geophysical survey 69 radiometric survey 69 airborne VTEM 69 aeromagnetic survey 69 Geotech VTEM 68 magnetic radiometric 67 VTEM airborne survey 67 airborne VTEM survey 67 detailed aeromagnetic survey 67 magnetic electromagnetic 67 airborne geophysical survey 66 VLF EM survey 66 VTEM surveys 66 electromagnetic EM survey 66 radiometric surveying 66 EM geophysical survey 66 airborne electromagnetic survey 66 magnetic geophysical 66 VTEM survey 65 aeromagnetics 65 radiometric magnetic 65 kilometer airborne magnetic 65 XDS VLF EM 65 aeromagnetic 65 induced polarization surveys 65 gamma ray spectrometry 65 airborne geophysical surveys 65 IP geophysical surveys 64 electromagnetic VTEM survey 64 airborne magnetics 64 airborne EM survey 64 AeroTEM survey 64 magnetometer surveys 64 ZTEM survey 64 magnetometer survey 64 VLF surveys 64 geophysical survey 64 resolution aeromagnetic survey 64 resolution airborne magnetic 63 VTEM 63 Fugro airborne 63 heliborne magnetic 63 IP Resistivity survey 63 airborne geophysical 63 VTEM airborne 63 airborne radiometric magnetic 63 electromagnetic geophysical 63 AeroTEM 63 radiometrics 63 AeroTEM III 62 airborne radiometrics 62 AeroTEM II 62 helicopter borne VTEM 62 IP Resistivity 62 ground magnetics 62 MEGATEM survey 62 VTEM airborne geophysical 62 ZTEM 62 VTEM electromagnetic 62 IP geophysics 62 induced polarization survey 62 Induced Polarization 62 electromagnetic surveys 62 induced polarization geophysical surveys 62 gravity geophysical surveys 61 induced polarization resistivity 61 ground geophysical surveying 61 IP resistivity 61 airborne geophysics 61 airborne electro magnetic 61 IP resistivity survey 61 detailed airborne magnetic 61 Ground geophysics 61 Geotech Ltd. 61 soil geochemical survey 61 Induced Polarisation 61 InfiniTEM survey 61 VLF EM surveys 61 airborne geophysical surveying 61 airborne electromagnetic EM 61 magnetic geophysical surveys 61 coincident magnetic 61 HLEM 61 Geophysical surveys 61 IP induced polarization 61 IP geophysical 61 airborne magnetic radiometric 60 Geological mapping 60 3D Induced Polarization 60 MEGATEM II 60 TDEM 60 Induced polarization 60 magnetic gradiometer 60 aeromagnetic surveys 60 airborne magnetometer survey 60 GEOTEM 60 mapping geochemical sampling 60 ground geophysical surveys 60 Geotech Airborne Limited 60 resistivity surveys 60 Radiometric surveys 60 auger drill 60 gradient array 60 Fugro Airborne Surveys 60 geologically mapped 60 Time Domain Electromagnetic 59 meter spacing 59 Radiometric 59 CSAMT 59 geological reconnaissance 59 airborne magnetometer 59 CSAMT survey 59 geochemical surveying 59 Fugro Airborne 59 termite mound sampling 59 aeromagnetic data 59 magnetometry 59 Geologic mapping 59 lithogeochemical 59 Induced Polarization surveys 59 dipole dipole IP 59 airborne magnetic anomalies 58 electro magnetic EM 58 Airborne geophysics 58 IP geophysical surveying 58 airborne magnetic surveys 58 scintillometer survey 58 TDEM survey 58 radiometric 58 Induced Polarization IP 58 spectrometric 58 geophysical surveys 58 airborne geophysical anomalies 58 VTEM geophysical survey 58 magnetometric 58 induced polarization IP 58 Geotech Ltd 58 Induced Polarisation IP 58 soil geochemical surveys 58 airborne magnetic electromagnetic 58 aircore drilling 58 induced polarization 58 Megatem 58 radiometric airborne 58 enzyme leach 58 electromagnetic surveying 58 Ground geophysical surveys 58 MegaTEM 58 mapping prospecting 58 Mag EM 58 soil geochemical 57 Detailed mapping 57 RC drillholes 57 Geophysical Survey 57 Harena 57 gravity gradiometry 57 pole dipole 57 geophysical interpretation 57 ground geophysics 57 VTEM airborne magnetic 57 IP Induced Polarization 57 Terraquest Ltd. 57 magnetite mineralization 57 coincident geophysical 57 electromagnetic EM geophysical 57 aero magnetic 57 anomaly coincident 57 gravity gradient 57 ground radiometric surveys 57 geochemical surveys 57 Gradiometer 57 geological mapping trenching 57 surface trenching 57 coincident magnetic anomaly 57 Sicera Sur 57 Titan# 57 Z TEM 56 Preliminary metallurgical testwork 56 Induced Potential 56 anomalous radiometric 56 soil sampling trenching 56 magnetometric survey 56 magnetometer surveying 56 anomalism 56 gradiometer 56 kilometer 2D seismic 56 DEEPEM 56 tenement E#/# 56 Aeromagnetic 56 geological mapping geochemistry 56 outcrop sampling 56 resolution aeromagnetic 56 airborne radiometric anomalies 56 radiometry 56 magnetic geophysical anomaly 56 km 2D seismic 56 electromagnetic anomaly 56 prospecting mapping 56 Geophysical surveying 56 linecutting 56 Quantec Titan 56 PONTAX property 56 Geochemical sampling 56 soil geochemical sampling 56 airborne electromagnetic AEM 56 electromagnetic EM conductors 56 EM geophysical 56 geochemical soil 56 approximately #km# [002] 56 electromagnetic geophysical surveys 56 electromagnetic EM 56 geological mapping prospecting 56 Reverse Circulation 56 Anuri kimberlite 56 aeromagnetic anomalies 56 CSAMT geophysical survey 56 InfiniTEM 56 diamond drillholes 56 reconnaissance prospecting 56 detailed geologic mapping 56 drillholes totaling 56 Induced Polarization Resistivity 56 2D seismic survey 56 Tatajuba 55 resistivity geophysical 55 Hotish 55 penetrating electromagnetic 55 prospecting geological mapping 55 uranium anomalism 55 IP chargeability 55 LTD# 55 reconnaissance mapping 55 excavator trenching 55 Nyota Prospect 55 silica pyrite 55 VTEM geophysical 55 magnetic anomalies 55 geological mapping geochemical sampling 55 EM conductors 55 geophysical conductors 55 mineralized skarn 55 Ronguen 55 induced polarization anomalies 55 auger sampling 55 domain electromagnetic VTEM 55 rockchip 55 Fofina 55 soil geochemistry 55 approximately #km# [001] 55 surface geochemical sampling 55 mineralized zones intersected 55 Sesmo Sur 55 3D induced polarization 55 circular magnetic anomaly 55 geophysics prospecting 55 induced polarization geophysical 55 #km# [002] 55 NQ diamond 55 geophysical surveying 55 Chargeability 55 VTEM airborne surveys 55 EM anomalies 55 radiometric anomalies 55 kimberlite breccia 55 radiometric anomaly 55 airborne EM anomaly 55 aircore 55 magnetics 55 seismic reprocessing 55 EM conductor 55 Amaruk property 55 Yanfolila 55 Simuku 55 Aeroquest Limited 55 geochemical samples 55 Quantec Geoscience 55 transient electromagnetic 55 prospecting trenching 55 Cordero Porphyry 54 UTEM 54 Airborne EM 54 electromagnetic conductors 54 IP chargeability anomalies 54 2D seismic surveys 54 Tortigny deposit 54 Surface sampling 54 Fayolle Deposit 54 geophysical datasets 54 MMI soil geochemical 54 gamma ray spectrometer 54 Roughrider East 54 Rovina porphyry 54 Detailed geological mapping 54 RAB drilling 54 stream sediment geochemical 54 VTEM Survey 54 IFSAR 54 sampling geological mapping 54 Akasaba Mine 54 VLF EM 54 geologic mapping 54 stepout drilling 54 Culebrilla 54 Soil geochemistry 54 contracted Geotech Ltd. 54 Cobrecon 54 mapping trenching 54 Ruhuhu 54 auger drilling 54 geophysical 54 VTEM anomalies 54 scintillometer surveys 54 meter spacings 54 Gravity Survey 54 conductive zones 54 airborne magnetic anomaly 54 multielement 54 Induced Polarization geophysical 54 REE bearing 54 auriferous zones 54 Timmins Porcupine West 54 MEGATEM 54 geophysical geochemical 54 borehole geophysical 54 Horizontal Loop Electromagnetic 54 airborne anomalies 54 Mobile Metal Ions 54 Renard cluster 54 Itigi Manyoni Uranium 54 scintillometers 54 Grandroy 54 Lunguya 54 magnetic susceptibility 54 Airborne Survey 54 anomalous geochemical 53 VTEM anomaly 53 Reverse circulation 53 geophysical conductor 53 mineralized shears 53 outcrop samples 53 VTEM Versatile Time 53 Lynx Anomaly 53 mineralized intrusive 53 Aappaluttoq 53 Airborne Geophysical Survey 53 Ebouri discovery 53 Rusk Zone 53 km induced polarization 53 drillcore 53 anomalous soil geochemistry 53 unpatented lode claims 53 Reverse Circulation RC 53 AHGZ 53 Au Cu mineralization 53 Gradient Geophysics 53 anomalous geochemistry 53 geophysical surveys trenching 53 geochem 53 Soil sampling 53 ground magnetometer surveys 53 anomalies coincident 53 magnetic lineaments 53 Rare Earth Element REE 53 kimberlite float 53 Y Zr 53 palaeochannel 53 2D seismic data 53 Reconnaissance mapping 53 geological mapping 53 spectrometer readings 53 Crackingstone 53 kimberlitic indicator minerals 53 lode claims 53 Calandria Norte 53 detailed geological mapping 53 structural lineament 53 Accha deposit 53 CSAMT surveys 53 High Resolution Aeromagnetic 53 aircore holes 53 hole GF# 53 chromite horizon 53 Zafranal Main Zone 53 geochemical geophysical 53 resistivity anomalies 53 Butia prospect 53 Banded Iron Formation 53 Yaramoko 53 gold geochemical anomalies 53 calcrete sampling 53 Despoblados 53 Highbank Lake 53 HRAM 53 Guayabales 53 #km 2D seismic 53 airborne EM surveys 53 Delineation drilling 53 Nyafe 53 aeromagnetic anomaly 53 geochemical sampling 53 Magusi deposit 53 resistivity surveying 53 Javhlant license 53 IP geophysical anomalies 53 Induced Polarization Survey 53 Magnetometer 53 kimberlitic 53 Suurikuusikko Trend 53 Fobiri 53 Angilak 53 Itilima 53 coincident gravity 53 ultramafic rock 53 Zona Alta 53 Emba Derho Adi Nefas 53 SLD# 53 electromagnetic anomalies 53 Fayolle 52 Dogpaw 52 lithologic 52 surface outcrops 52 Airborne Magnetic 52 diamond drillhole 52 geochem anomalies 52 detailed airborne geophysical 52 Nkran 52 geochemical 52 Surface trenching 52 dipole dipole 52 Cluff Lake 52 IOCG targets 52 sylvinite 52 Abitibi Geophysique 52 Electromagnetic EM 52 Mankarga 5 52 magnetotelluric 52 Gjegjan 52 mineralized outcrop 52 Quantec 52 anomalous mineralization 52 kimberlitic material 52 geological mapping geochemical 52 Adumbi Prospect 52 Cordero Porphyry Belt 52 geochemistry anomalies 52 mechanical trenching 52 IP Resistivity surveys 52 Bellechasse Timmins 52 Shirotnaia zone 52 extensional drilling 52 MegaTEM II 52 Grevet 52 Molybdenum mineralization 52 Fayolle deposit 52 El Dovio 52 porphyry intrusion 52 Zafranal 52 Star Kimberlite 52 Reverse Circulation drilling 52 Muirs Reef 52 Miwah Gold Zone 52 manganese mineralization 52 VTEM conductor 52 2D Seismic 52 outcrop exposures 52 mineralized outcrops 52 angular boulders 52 GEOTEM survey 52 Pulse EM 52 South Minita 52 Cumpie Hill 52 Chimiwungo 52 northeasterly trending 52 PdA Extension 52 #km# [003] 52 resource delineation drilling 52 anomalous Au 52 high sulphidation alteration 52 advanced argillic alteration 52 Ouzzal 52 magnetotelluric survey 52 Resistivity 52 MC Dalhousie 52 Corachapi 52 reprocessed 3D seismic 52 Airborne Surveys 52 induced polarization anomaly 52 outcropping quartz veins 52 downhole geophysical 52 Regcourt 52 Soquem 52 Asankrangwa Holdings 52 induced polarization geophysics 52 Qilaq 52 stringer mineralization 52 infill sampling 52 massive sulphide VMS 52 ultramafic sequence 52 prospective stratigraphy 52 arcuate 52 mapping geochemistry 51 quartz sulphide vein 51 Las Carolinas 51 intrusive breccia 51 stream sediment geochemistry 51 pegmatite dyke 51 Fugro Ground 51 resource delineation 51 hyperspectral 51 potentially bulk mineable 51 McPhar 51 Ni Cu PGM 51 Airborne Geophysical 51 DUB# 51 Scadding Gold 51 Djambaye 2 51 Aeroquest 51 Abitibi Geophysics 51 Zone Bambadinka 51 copper anomalism 51 Marban Block 51 geological mapping sampling 51 coincident induced polarization 51 bathymetric survey 51 kimberlite outcrop 51 Crone Geophysics 51 antimony mineralization 51 IP chargeability anomaly 51 Bulk sampling 51 airborne radiometric surveys 51 Ntaka Hill 51 Kay Tanda 51 Aqua satellite 51 Kitenge Prospect 51 Preliminary metallurgical 51 trenching sampling 51 Amaruk 51 Soil geochemical 51 quartz sulphide veins 51 EW trending 51 macrodiamond 51 Sicera Norte 51 uranium radiometric anomalies 51 NE trending 51 Calandria Sur 51 Mt Penck 51 Breccia Pipe 51 Klaza property 51 REE mineralized 51 outcropping mineralization 51 Cu Ni 51 Terraquest 51 systematic geochemical sampling 51 sampling trenching 51 Andesite 51 gossans 51 breccia mineralization 51 NQ diamond drilling 51 soil geochemistry surveys 51 Suuri zone 51 Fayolle property 51 electromagnetic conductor 51 Klappibacken 51 adit sampling 51 Sian Praso 51 magnetite ilmenite mineralization 51 Luhwaika 51 hyper spectral 51 magneto telluric 51 granitoids 51 Lac Mantouchiche uranium 51 Cannivan Gulch 51 RC drill 51 linear magnetic anomalies 51 Destor Porcupine fault 51 Ouro Roxo 51 geochemical anomalies 51 Tumipampa property 51 disseminated sulphide mineralization 51 Kugruk 51 NASA EPOXI mission 51 #m@#.#g t gold [002] 51 volcanogenic massive sulfide 51 KIMs 51 Pipestone Fault 51 #:# scale 51 untested geophysical anomalies 51 Bajo Negro vein 51 Kelex 51 petrographic studies 51 coincident geochemical 51 MMI anomalies 51 northerly trending 51 azimuthal 51 vanadium mineralization 51 DDHs 51 volcano sedimentary belt 51 Morichito # 1N 51 Dubenski property 51 Geotech 51 #:#,# scale [002] 51 #km# [001] 51 Riscos de Oro 51 Lupoto 51 geochemical assays 51 Aircore drilling 51 UTEM survey 51 MMI geochemistry 51 Uzboy 51 gravity anomaly 51 PacBay 51 kimberlite indicator mineral 51 garnet skarn 51 Cu Au porphyry 51 Kipawa deposit 50 Uul 50 Mars Reconnaissance Orbiter MRO 50 VTEM conductors 50 pegmatite dykes 50 Tantamaco 50 anomalous uranium 50 VTEM targets 50 magnetite alteration 50 bulk tonnage mineralization 50 #km# [004] 50 kimberlite dyke 50 Akie property 50 Bir Moghrein 50 Farellon 50 Schefferville Quebec 50 Cuiu Cuiu 50 intersected mineralized 50 Detailed geologic mapping 50 Dogpaw Lake 50 Toro Gregorio 50 kimberlitic bodies 50 Cerro la Paila 50 resistivity anomaly 50 Pozo Seco 50 Malrok 50 Extension Occurrence 50 uraniferous 50 OTD# 50 Nueva Concepcion 50 Siribaya mega structure 50 Moly Brook 50 magnetic anomaly 50 Drillhole 50 BIF outcrops 50 Carrizalillo Hill 50 kimberlite occurrences 50 radiometrically 50 Kalana Mine 50 sidewall cores 50 NQ diamond drill 50 Sunbeam Pettigrew property 50 Condor de Oro 50 pyroxenites 50 copper molybdenum mineralization 50 Lac Cinquante deposit 50 Gaoua copper gold 50 JORC compliant inferred resource 50 molybdenite mineralization 50 auger geochemical 50 silicified zone 50 geotechnical drilling 50 Kitongo 50 mineralized alteration 50 downhole geophysics 50 aircore drill 50 Km2 50 Ida Dome 50 vuggy silica quartz alunite 50 South Miwah Bluff 50 reconnaissance geological mapping 50 Reverse Circulation Drilling 50 coincident chargeability 50 Jumping Josephine 50 Alaskite 50 Nithi Mountain 50 preliminary metallurgical testwork 50 palaeochannels 50 Merensky Reef 50 geophysical geological 50 tungsten mineralization 50 Cata Clavo 50 favorable felsic volcanic 50 Debarwa deposit 50 M#/# [002] 50 Poste Lemoyne Extension 50 Gongondy 50 NAD# [002] 50 MMI soil geochemistry 50 heli borne 50 trenches excavated 50 gabbro dyke 50 mineralized occurrences 50 diamond drilling 50 supergene zone 50 gabbro intrusive 50 mafic dyke 50 Potrerillos 50 mineralized breccia 50 porphyry mineralization 50 subcrop 50 Higo Blanco 50 radiometric prospecting 50 Okohongo 50 Pucamayo 50 magnetite BIF 50 magnetic geophysical anomalies 50 Norlartic 50 airborne electromagnetics 50 altered andesitic 50 petrological 50 lode mining 50 Induced Polarization IP chargeability 50 soil geochemistry anomaly 50 trench sampling 50 geophysical targets 50 Carscallen Township 50 Los Helados 50 Seagull Intrusion 50 REE mineralization 50 Chiis deposit 50 BLEG 50 mafic intrusion 50 leached capping 50 distinct substructures 50 untested geophysical 50 Veta Madre 50 IP geophysical anomaly 50 Turnor Lake 50 silicic 50 mineralized diorite 50 REE showings 50 Aurizona Main 50 El Cometa 50 geologic geochemical 50 Asankrangwa Gold Belt 50 Etango deposit 50 ground radiometric surveying 50 airborne radiometric anomaly 50 gravity anomalies 50 km2 3D seismic 50 Huxter Lane 50 spodumene bearing 50 Yaxtche deposit 50 Retty Lake 49 REE occurrences 49 F2 Zone 49 km2 49 Tortigny 49 kimberlite cluster 49 Hibou dyke 49 Colnic 49 laser altimeter 49 drillhole database 49 Interferometric Synthetic Aperture Radar 49 induced polarization IP chargeability 49 massive sulphide lenses 49 sericitic 49 SJ Geophysics 49 hole NR# 49 hole CJV 49 ATP#P 49 gold copper porphyry 49 Kaniago 49 Eagle Nest deposit 49 regolith mapping 49 footwall alteration 49 ENE trending 49 Black Thor chromite 49 Nkout 49 metallogenic 49 copper mineralization intersected 49 Buriti trend 49 Snowfield Zone 49 delineation drill 49 conductivity anomalies 49 TerraSAR X 49 Ni Cu PGM mineralization 49 Systematic sampling 49 Breccia Ridge 49 mineralized dykes 49 mineralization encountered 49 layered mafic 49 kimberlite dykes 49 McFauld 49 PEP# [002] 49 chargeability highs 49 Cu Au mineralization 49 polarimetric 49 Electro Magnetic 49 chargeability anomaly 49 Marta Este 49 RC drilling 49 magnetic VLF EM 49 dike swarm 49 Falea 49 Sorowar 49 geophysics trenching 49 geological geochemical geophysical 49 Mouchalagane 49 vein swarms 49 Thor Trend 49 inversion modeling 49 gossanous 49 Planchas de Plata 49 overburden sampling 49 Tordillo 49 Las Calandrias 49 epithermal quartz veins 49 trending shear zone 49 BHEM surveys 49 Enzyme Leach 49 excavator trenches 49 SOMINE property 49 Lone Pine Property 49 E#/# [001] 49 dyke swarm 49 Mayoko 49 scintillometer 49 borehole geophysics 49 Ciresata 49 South Barnat 49 mineralized intercept 49 Synthetic Aperture Radar SAR 49 NQ drill 49 soil geochemical anomaly 49 Malundwe 49 MMI geochemical 49 Nueva Caledonia 49 bedrock conductors 49 Marban deposit 49 E#/# [002] 49 sq km 3D seismic 49 geochemical analyzes 49 microprobe 49 PGE mineralization 49 Leitch Sand River 49 Bakoudou 49 dimensional seismic 49 geochemical assay 49 tunnel junction MTJ 49 Dombraly 49 chromite mineralization 49 Dioulafoundou zone 49 Spider KWG 49 Condor Consulting 49 P#/# [002] 49 JVX Ltd. 49 Tres Juanes 49 volcanic stratigraphy 49 Pokukrom West 49 hole RC# 49 gold anomalism 49 Cu Mo Au 49 #-#-#-# W5M [003] 49 surface geochemistry 49 outcropping vein 49 electrical resistivity 49 Sierra Pintada 49 La Mascota zone 49 Carbonatite Complex 49 Bamoos 49 Delcer Buttes 49 Benzdorp 49 Leman sandstone 49 Meliadine West 49 anomalous zones 49 geophysical anomaly 49 Ormsby Zone 49 Geoscience Consultants 49 Spectrograph 49 airborne electromagnetic anomalies 49 stream sediment 49 magnetite ilmenite lenses 49 drillholes 49 poly metallic mineralization 49 Maybrun 49 portable XRF analyzer 49 Goldcliff 49 TerraX 49 Homase 49 outcropping veins 49 EM anomaly 49 RC percussion 49 Tirek 49 Carotare 49 infrared spectra 49 layered ultramafic 49 intersected kimberlite 49 chargeability anomalies 49 Tabita Prospect 49 Las Boquillas 49 mineralized vein 49 Sombrero Butte 49 Sambaru 49 intersected sulphide mineralization 49 Purepoint 49 epithermal gold vein 49 silicified breccia 49 mineralogical studies 48 Tagpura 48 Valdecanas Vein 48 Kangaluwi 48 Fayolle Project 48 mineralized drill intercepts 48 platinum palladium mineralization 48 Deformation Zone 48 deformation zone 48 Lunar Reconnaissance Orbiter LRO 48 horizontal wellbore 48 overburden stripping 48 interferometric 48 vein breccia 48 epithermal gold targets 48 Excavator trenching 48 lithocap 48 Drill intersections 48 perforated interval 48 resistivity 48 litho geochemical 48 ESO telescope 48 geophysical induced polarization 48 Infill drilling 48 Letitna 48 penetrating geophysical 48 garimpeiro workings 48 geochemically anomalous 48 Igunda 48 El Compas 48 Ni Cu PGE mineralization 48 alluvial gravels 48 mafic intrusive 48 Lalor deposit 48 magmatic sulphide mineralization 48 Goldpines North 48 Mistassini property 48 Airborne Radiometric 48 chargeability resistivity 48 Lugushwa 48 pegmatitic 48 bearing sulphide mineralization 48 epithermal alteration 48 Greenstone belt 48 geological geophysical 48 mafic intrusions 48 Gradient Array 48 quartz reefs 48 gold geochemical anomaly 48 Incahuasi 48 RRZE 48 JVX 48 chargeability 48 mineral tenures 48 Tiriganiaq deposit 48 Lustdust 48 Bororo Nuevo 48 Haro concession 48 Metallurgical testwork 48 EPL# 48 ground geophysics trenching 48 Drill hole SADD# 48 mineralized diatreme breccia 48 copper molybdenum gold 48 kimberlite indicator minerals 48 Breccia Zone 48 hypogene copper mineralization 48 Mkuju 48 Igneous Complex 48 3D Seismic 48 monzonite intrusion 48 trending mineralized 48 TSX VENTURE PUM 48 previously undrilled 48 Chiis 48 Seberaba 48 Nymagee Copper Mine 48 petrographic 48 coincident anomalous 48 Sekenke 48 alaskite bodies 48 Rio Zarza 48 drill hole SADD# 48 Bajo Negro 48 Oshiveli 48 sediment sampling 48 kimberlite lithologies 48 gamma ray logs 48 Dienemera