trench sampling

Related by string. trenching sampling * trenching . Trenching . trenched . trencher . Trench . Trencher . TRENCH : digging trench . trench caved . trench coat . trench coats . trench dug . Mariana Trench / sampler . sampled . Sampler . Sampling . Sampled . SAMPLING : sampling error margin . soil sampling . soil geochemical sampling . bulk sampling . theoretical sampling error . random sampling * *

Related by context. All words. (Click for frequent words.) 81 outcrop sampling 77 surface trenching 77 geochemical surveying 77 soil geochemical survey 76 geochemical soil 76 aircore drilling 76 soil geochemical surveys 76 soil geochemical sampling 76 Surface sampling 75 detailed geological mapping 75 excavator trenching 75 soil geochemical 75 mechanical trenching 75 infill sampling 75 auger drilling 74 gold anomalism 74 geochemical sampling 74 geochemical surveys 74 stream sediment 74 geologic mapping 74 soil geochemistry 74 mineralized intercepts 73 Geologic mapping 73 drill intercepts 73 diamond drilling 73 geochem 73 mineralized outcrops 73 induced polarization surveys 73 reconnaissance prospecting 73 airborne radiometric survey 73 airborne geophysical anomalies 73 soil sampling 73 magnetometer survey 73 Bulk sampling 73 surface outcrops 73 Geological mapping 73 Detailed mapping 73 prospecting mapping 72 infill drill 72 geochemical assay 72 RC drill 72 induced polarization 72 Soil sampling 72 RAB drilling 72 auger drill 72 Geophysical surveys 72 adit sampling 72 mapping trenching 72 Detailed geological mapping 72 anomalous zones 72 sampling trenching 72 IP geophysical 71 Reverse Circulation drilling 71 gossans 71 drill holes 71 Induced Polarization 71 surface geochemistry 71 prospecting geological mapping 71 delineation drill 71 trenching 71 Aircore drilling 71 radiometric surveys 71 soil geochemical anomalies 71 radiometric anomalies 71 diamond drillholes 71 geological mapping prospecting 70 anomalous mineralization 70 gossan 70 ground magnetics 70 geophysical conductors 70 induced polarization IP 70 mapping prospecting 70 metallurgical testwork 70 Geochemical sampling 70 RC drilling 70 calcrete sampling 70 geophysical surveys 70 excavator trenches 70 mineralized intersections 70 geochemical anomalies 70 mechanized trenching 70 #WR# 70 Induced Polarization IP 70 induced polarization survey 70 Bejucosa 70 drillholes 70 extensional drilling 70 Significant assay 70 detailed geologic mapping 70 trenching sampling 70 #.#g t gold [005] 70 vein intercepts 70 prospecting trenching 70 Preliminary metallurgical 70 lithogeochemical 70 IP chargeability anomalies 70 artisanal workings 70 IP geophysical surveys 69 mineralized outcrop 69 airborne geophysics 69 induced polarization anomalies 69 radiometrics 69 radiometric survey 69 geological modeling 69 EM anomalies 69 geophysical geochemical 69 magnetite mineralization 69 geochemical assays 69 geochemically anomalous 69 Dombraly 69 anomalous uranium 69 ground geophysics 69 Las Boquillas 69 IP geophysics 69 IP induced polarization 69 geochemical geophysical 69 Shaft Zone 69 #.#g t gold [001] 69 Soil geochemistry 69 Calandria Sur 69 airborne radiometric anomalies 69 Rare Earth Element REE 69 Significant intersections 69 Cobrecon 69 anomalous copper 69 ground geophysical surveys 69 geochemical anomaly 69 outcrop samples 69 auger sampling 69 holes #WR# 69 anomalism 69 gold mineralization intersected 69 EM conductors 69 Calandria Norte 69 geological mapping 69 molybdenum mineralization 69 geochemical samples 69 stream sediment geochemical 69 airborne anomalies 69 conductive zones 69 #m@#.#g t Au [001] 69 Infill drilling 68 Snowfield Zone 68 surface geochemical sampling 68 Drill intersections 68 diamond drill 68 resistivity anomalies 68 Assay Results 68 drillhole 68 mineralization encountered 68 termite mound sampling 68 VTEM survey 68 Letitna 68 #m@#.# g t [002] 68 BHEM surveys 68 mineralized skarn 68 infill holes 68 outcropping mineralization 68 calcrete 68 bulk tonnage mineralization 68 MMI soil geochemical 68 geochemical 68 geophysical surveying 68 sulphide zones 68 ground geophysical surveying 68 PdA Extension 68 Juanicipio Vein 68 #m@#.#g t gold [001] 68 El Creston 68 Soil geochemical 68 Preliminary metallurgical testwork 68 hole #GSE# 68 geological geochemical 68 VTEM airborne survey 68 mineralized intrusive 68 Las Bolas 68 Dioulafoundou 68 CSAMT survey 68 delineation drilling 68 enzyme leach 68 Induced Polarisation IP 68 vanadium mineralization 68 Dogpaw Lake 68 Rusk Zone 68 #.#gpt Au [001] 68 soil anomalies 67 molybdenite mineralization 67 Riscos de Oro 67 radiometric anomaly 67 IP resistivity survey 67 grade drill intercepts 67 geophysical targets 67 Soquem 67 geophysical interpretation 67 Oshiveli 67 reconnaissance mapping 67 electromagnetic surveys 67 #.#g t Au [003] 67 preliminary metallurgical testwork 67 mineralized quartz veins 67 aeromagnetic survey 67 Systematic sampling 67 Mankarga 5 67 disseminated sulphide mineralization 67 relogging 67 #.#g t [005] 67 detailed airborne magnetic 67 anomalous gold 67 bulk sampling 67 electromagnetic conductors 67 Marta Este 67 airborne radiometric 67 TerraX 67 mineralized zones intersected 67 gossanous 67 ZTEM survey 67 Significant intercepts 67 geological reconnaissance 67 geological interpretation 67 Cerro Maricunga 67 inferred resource calculation 67 geological mapping trenching 67 mineralized drill intercepts 67 Sicera Sur 67 IP Resistivity survey 67 Tantamaco 67 IP resistivity 67 airborne EM 67 Golouma West 67 #-# compliant resource 67 auriferous zones 67 El Compas 67 potash mineralization 67 Kangaluwi 67 Cu Au mineralization 67 induced polarization geophysical 67 airborne electromagnetic survey 67 sulfide mineralization 67 grade intercepts 67 anomalous soil geochemistry 67 Kierens 67 aeromagnetics 67 Reverse Circulation 67 Black Thor chromite 67 induced polarization geophysics 67 Upper Vein 67 CSAMT 67 Bajo Negro 67 vein outcrops 67 conductive anomalies 66 Cata Clavo 66 oxide mineralization 66 mineralized boulders 66 Guayabales 66 uraniferous 66 airborne magnetic 66 infill diamond 66 geochemistry anomalies 66 Hadal Awatib 66 chargeability anomalies 66 Kay Tanda 66 PGM mineralization 66 REE mineralized 66 #g t Au [001] 66 aircore 66 Au Cu mineralization 66 REE showings 66 Veta Madre 66 silicified breccia 66 Assay results 66 #m@#.#g t Au [003] 66 diamond drill intercepts 66 Akasaba 66 Roughrider East 66 Dubenski Shaft Zone 66 geophysical survey 66 IOCG targets 66 Airborne geophysics 66 airborne magnetic survey 66 Calvario Vein 66 Kavola East 66 Luhwaika 66 Cu Ni 66 copper mineralization intersected 66 Roughrider uranium deposit 66 #.#g t Au [004] 66 Naciente Quebrada Pedregosa 66 REE mineralization 66 Lac Herbin 66 Megatem 66 Emba Derho 66 Surface trenching 66 bulldozer trenching 66 Zone Bambadinka 66 Au Cu 66 Ni Cu PGM mineralization 66 skarn mineralization 66 Koshaj 66 MPD# 66 element geochemistry 66 Mouchalagane 66 Gongondy 66 anomalous geochemistry 66 auger geochemical 66 Mineralized intercepts 66 Colnic 66 anomalous Au 66 VTEM anomalies 66 Kwanika 66 borehole geophysics 66 Minera Afrodita 66 Mt Penck 66 Huarabagoo 66 La Morocha 66 basal till 66 Lone Pine Property 66 mineralized occurrences 66 airborne geophysical 66 Carotare 66 tungsten mineralization 66 RC drillholes 66 #m@#.#g t [006] 66 magnetic geophysical surveys 66 Thor Trend 66 Dubenski property 66 VTEM 66 nickel sulphide mineralization 66 VTEM surveys 66 inferred resource estimate 66 mineralized veins 66 sediment sampling 66 Zafranal 66 IP chargeability anomaly 66 surface geochemical anomalies 66 copper mineralization 66 NQ diamond 66 mineral occurrences 66 Fayolle property 66 ODAE 66 WDC# 66 stockwork mineralization 65 Shirotnaia 65 anomaly coincident 65 UTEM 65 diamond drillhole 65 IP Induced Polarization 65 Igunda 65 Kuriskova 65 F2 Zone 65 geophysical anomaly 65 magnetometric 65 #m@#.# g t Au [002] 65 Detailed geologic mapping 65 gold geochemical anomalies 65 Rojo Grande 65 massive sulphide mineralization 65 auriferous 65 DDH# [002] 65 petrographic studies 65 Dadiangou 65 #m@#.# g t Au [001] 65 Pidgeon Molybdenum Deposit 65 m@#.# g t Au [002] 65 anomalies coincident 65 #m@#.# % [003] 65 mineralized vein 65 Hallnor 65 Drill Holes 65 Ntaka Hill 65 massive sulphide lens 65 Higo Blanco 65 aircore holes 65 soil geochemical anomaly 65 3D induced polarization 65 reverse circulation 65 sulphide bearing 65 Anomalous gold 65 coincident geophysical 65 stepout drilling 65 potentially bulk mineable 65 #m@#.#g t gold [002] 65 Ciresata 65 sulphide intersections 65 Nyota Prospect 65 Footwall Zone 65 mineralized zones 65 mineralized shear zones 65 Inferred Resource estimate 65 soil sampling trenching 65 stringer sulphides 65 VTEM anomaly 65 alaskite 65 outcropping quartz veins 65 mineralized zone 65 DUB# 65 mineralizations 65 #m@#.#g t Au [005] 65 disseminated mineralization 65 downhole geophysics 65 Cu Au 65 mineralized quartz 65 Promontorio 65 Ciresata Porphyry 65 airborne radiometrics 65 disseminated sulphide 65 Tiriganiaq deposit 65 Metallurgical testwork 65 El Domo deposit 65 NI #-# Resource Estimate 65 infill drilling 65 manganese mineralization 65 ppm Ag 65 KIMs 65 mineralized intercept 65 Reconnaissance mapping 65 uranium mineralization 65 anomalous radioactivity 65 polymetallic mineralization 65 outcropping veins 65 mineralized lenses 65 Fofina 65 Kutcho 65 Artavasdes 65 massive sulphide intersections 65 antimony mineralization 65 Main Homestake 65 Yanfolila 65 LONG Bars 65 EM geophysical survey 65 #m@#.# g t Au [006] 65 #m@#.#g t Au [006] 65 palaeochannel 65 Sourdough Ridge 65 Yarumalito 65 LURC# 65 Goldcliff 65 Ground geophysical surveys 65 aeromagnetic surveys 65 anomalous molybdenum values 65 drill hole HR# 65 magnetometer surveys 65 stream sediment geochemistry 65 previously unsampled 65 hole HR# 65 flotation testwork 65 #TR# 65 #m@#.#g t Au [004] 65 magnetic anomalies 65 mineralized horizon 65 TDEM survey 65 palaeochannels 65 Kerekounda 65 trenches excavated 65 rock geochemistry 65 Paso Yobai 65 Starvation Canyon 65 Batoto 65 borehole geophysical 65 massive sulphide zones 65 holes RR# 65 % Nb#O# 65 previously undrilled 65 holes drilled 65 Kau# 64 resistivity surveys 64 porphyry mineralization 64 Hinge Zone 64 metres@#.# g t [003] 64 kimberlite dyke 64 Kaniago 64 InfiniTEM survey 64 sulphide mineralized 64 El Cometa 64 magnetic geophysical 64 aeromagnetic data 64 alteration zones 64 mineralized shear zone 64 IP Resistivity 64 airborne geophysical survey 64 Banded Iron Formation 64 El Orito 64 airborne geophysical surveys 64 geologically mapped 64 Bellekeno deposit 64 drillcore 64 uranium occurrences 64 Pokukrom West 64 Guayabito 64 geophysics trenching 64 Diamond Drill 64 meter spacing 64 WDD# 64 #.#g Au t [003] 64 subcrop 64 Klappibacken 64 mineralized porphyry 64 ground radiometric surveys 64 copper molybdenum mineralization 64 Vaquillas 64 induced polarization geophysical surveys 64 Grab samples 64 Au Ag mineralization 64 airborne VTEM survey 64 Reverse Circulation RC 64 #.#g t Au [002] 64 hole DDH# 64 kimberlite discoveries 64 Bonanza Trench 64 niobium mineralization 64 #m@#.# g t Au [007] 64 footwall mineralization 64 #m@#.#g t [002] 64 outcrop exposures 64 petrophysical evaluation 64 geochem anomalies 64 Kanosak 64 Airborne Survey 64 Scoping Study 64 Minapampa East 64 volcanogenic massive sulphides VMS 64 McFauld 64 dipole dipole IP 64 #m@#.# % [007] 64 resource estimation 64 kimberlitic 64 soil anomaly 64 Uzboy 64 scintillometer surveys 64 anomalous soil geochemical 64 Reverse circulation 64 backhoe trenching 64 resolution airborne magnetic 64 breccia zone 64 VTEM conductors 64 Onkelo 64 EM conductor 64 YAR# 64 Klaza Zone 64 Hibou dyke 64 gold mineralization 64 resource delineation drilling 64 Ikungu 64 drill hole SADD# 64 Tres Juanes Norte 64 quartz sulphide vein 64 Pozo Seco 64 overburden sampling 64 weakly anomalous 64 Itigi Manyoni Uranium 64 anomalous concentrations 64 Alaskite Zone 64 Lac Pau 64 mineralized showings 64 BLEG sampling 64 testwork 64 MMI geochemistry 64 #g t Au [002] 64 Wireline logs 64 trenching mapping 64 Nordeau West 64 Grandroy 64 averaging #.#g t [001] 64 untested geophysical anomalies 64 drillhole intersections 64 mineralized corridor 64 #m@#.# % [004] 64 airborne electromagnetic 64 assay intervals 64 Cumpie Hill 64 South Barnat 64 airborne electromagnetic EM 64 Zafranal Main Zone 64 NQ diamond drill 64 sulphide intercepts 64 Mala Noche Footwall Zone 64 Drill Hole Results 64 anomalous radiometric 64 samples assayed 64 Corachapi 64 chromite mineralization 64 massive sulphide lenses 64 vuggy silica 64 poly metallic mineralization 64 South Minita 64 IOCG mineralization 64 intersected mineralization 64 geological interpretations 64 IP geophysical anomalies 64 geotechnical drilling 64 mineralized widths 64 metallurgical testing 64 Nyafe 64 Discovery Outcrop 64 Porphyry Zone 64 Ruhuhu 64 stockwork breccia 64 Sulphide Shear Zone 64 Dogpaw 64 kimberlitic material 64 Breccia Zone 63 radiometric readings 63 hole SP# 63 BHEM 63 downhole geophysical 63 gAu t 63 mineralized structures 63 Takom Zone 63 mineralized breccia 63 mineralization intersected 63 HLEM 63 VTEM conductor 63 Manfo Property 63 MNFWZ 63 GG6 63 Nucleus Zone 63 Barre de Fer 63 mineable widths 63 gravity anomalies 63 Ni Cu 63 cobalt mineralization 63 chalcopyrite mineralization 63 Trenching 63 Metallurgical Testing 63 Uranium mineralization 63 sulfide bearing 63 electromagnetic anomalies 63 IP chargeability 63 MGZD# [001] 63 Pitaloza 63 variably mineralized 63 massive sulphide horizon 63 Wona 63 Lac Herbin mine 63 airborne radiometric magnetic 63 El Manto 63 % Li2O 63 eluvial 63 JORC resource estimate 63 % Fe#O# 63 Uranium Mineralization 63 Diamond Drilling 63 unoxidized 63 Junnagunna 63 corehole 63 epithermal veins 63 Fobiri 63 geological mapping geochemistry 63 PGE mineralization 63 Tabakoto pit 63 magnetic electromagnetic 63 Simuku 63 grade mineralization intersected 63 VTEM airborne surveys 63 Sisson Brook 63 mineralized horizons 63 REE bearing 63 Bellekeno 63 open pittable 63 Cerro la Paila 63 VTEM targets 63 Butia prospect 63 detailed airborne geophysical 63 Ag Pb Zn 63 Geophysical surveying 63 stockwork zone 63 airborne EM survey 63 Cu Zn 63 open pittable resource 63 Gossan Hill 63 Prefeasibility Study 63 saprolitic 63 Hotish 63 Wasamac property 63 Ultramafic Zone 63 metres@#.# g t Au [003] 63 intersected sulphide mineralization 63 hole RC# 63 Angela Vein 63 3D Induced Polarization 63 copper anomalism 63 Dienemera 63 lateral extensions 63 gold copper porphyry 63 NEVADO 63 Klaza property 63 #.#g t Au [001] 63 Barkerville Mountain 63 supergene mineralization 63 Southeast Pediment 63 Marban deposit 63 strongly silicified 63 Takom 63 West Pequop 63 metres@#.# g t Au [002] 63 supergene zone 63 radon anomalies 63 anomalous geochemical 63 Induced Polarisation 63 magnetite bearing 63 intersected anomalous 63 MMI anomalies 63 La Mascota 63 geophysical anomalies 63 leachable copper 63 open pitable 63 Vargbacken 63 samples assaying 63 MegaTEM 63 Airborne Geophysical Survey 63 stringer mineralization 63 sampling geological mapping 63 Mobile Metal Ions 63 copper skarn 63 Handcamp 63 jasperoid 63 airborne magnetics 63 intersected #.#m [002] 63 NN Zone 63 Nkout 63 Jahodna 63 La Bodega zone 63 skarn zones 63 Definition Drilling 63 McFauld West 63 mineralized pegmatite 63 Barite Hill 63 Porphyry 63 #.#g t Ag [005] 63 breccia pipes 63 coincident geochemical 63 Merensky Reef 63 Bellechasse Timmins 63 South Miwah Bluff 63 Drill Hole Locations 63 DDH# [001] 63 holes #RB# 63 @ #.#g t [002] 63 updated Mineral Resource 63 saprolite 63 electromagnetic surveying 63 ANIT 63 Pre Feasibility 63 VTEM airborne 63 Arap Tepe 63 Dos Hornos 63 Golouma South 63 VTEM airborne geophysical 62 Tres Juanes 62 epithermal silver 62 MR# #C 62 Kipawa deposit 62 ppb gold 62 aircore drill 62 BLEG 62 MMI geochemical 62 sylvinite 62 sawn channel 62 petrographic 62 Santa Pancha 62 electromagnetic EM survey 62 geological mapping sampling 62 Pokukrom East 62 porphyry style 62 hematite mineralization 62 conductivity anomalies 62 bearing sulphide mineralization 62 Arista deposit 62 garimpeiro workings 62 Mineralized intervals 62 kimberlitic indicator minerals 62 Laterite 62 Ouro Verde deposit 62 Calcite Hill 62 Incahuasi 62 northerly trending 62 nickel laterite mineralization 62 Stockwork 62 Ixtaca 62 % eU#O# 62 copper sulphide mineralization 62 Guadalupe Manto 62 Don Ese 62 Douay Ouest 62 intersected #.#m [001] 62 scintillometer survey 62 mineralogical studies 62 Silica Ridge 62 Lac Cinquante 62 downdip extension 62 epithermal gold mineralization 62 AeroTEM III 62 Kiaka 62 drillholes totaling 62 reconnaissance geological mapping 62 inversion modeling 62 Massive Sulphide VMS 62 Mineral Resource Estimates 62 UTEM survey 62 massive sulphides 62 Delineation drilling 62 Vindaloo zone 62 silica breccias 62 Sunbeam Pettigrew property 62 Longitudinal Section 62 airborne magnetometer survey 62 Taricori 62 #g t Ag [002] 62 Encino Vein 62 Kobada 62 vein stockworks 62 Clay Howells 62 Buriti trend 62 grade bulk tonnage 62 1g t 62 Jumping Josephine 62 surficial 62 Nfante West 62 eluvial material 62 Magistral Mine 62 talus fines 62 Las Carolinas 62 m@#.# g t Au [001] 62 #.#g t Ag [004] 62 Muirs Reef 62 DEBD 62 El Cuatro 62 detailed aeromagnetic survey 62 Hangingwall 62 Segala Main 62 adits 62 underground delineation drilling 62 Ouro Roxo 62 Quantec Titan 62 Abitibi Geophysics 62 Drill Results 62 NI #-# resource 62 assays 62 Amun Deeps 62 borehole electromagnetic 62 hole MWNE 62 macrodiamond 62 intersected mineralized 62 #.#gpt [001] 62 Homestake Silver 62 stockwork veining 62 Dioulafoundou zone 62 Lac Mantouchiche uranium 62 diamondiferous kimberlites 62 JAK Zone 62 Clavos 62 gravity anomaly 62 alaskites 62 hole TL# 62 ground radiometric surveying 62 Abel Knoll 62 Langmuir Discovery 62 linecutting 62 vein swarms 62 g t Au 62 kimberlite indicator minerals 62 NE Wollaston 62 #-# compliant mineral 62 uranium vanadium mineralization 62 vein widths 62 NI #-# inferred resource 62 mineralized interval 62 Moly Brook 62 sulphide mineralization 62 Coneto 62 Kelex 62 g t gold 62 #.#g t gold [004] 62 airborne magnetic anomalies 62 TC# #d 62 Pasacancha Ag Au 62 Aappaluttoq 62 Sian Praso 62 mineralized alteration 62 BIF outcrops 62 Aguila Cu Mo 62 Drill Program 62 La Josefina 62 Mineralized zones 62 Pinguino property 62 geophysical signatures 62 Valdecanas 62 Accha deposit 62 TSX VENTURE WOO 62 Dubenski 62 Sissingue 62 Platosa 62 kimberlite dykes 62 bulk minable 62 airborne radiometric surveys 62 Granduc 62 Cerro de Oro 62 #RB# 62 hole NR# 62 ppb Au 62 hole MJV 62 Lalor deposit 62 leached capping 62 Nkran 62 airborne magnetic electromagnetic 62 Toroparu 62 Tagpura 62 Kihitian 62 uranium anomalism 62 radiometric surveying 62 Lac Pivert Rose 62 Butte Highlands 62 Musley Deposit 62 bearing quartz vein 62 gpt Au 62 laterite mineralization 62 vein breccia 62 Las Bolas deposit 62 bulk mineable 62 #.#g t [006] 62 Las Bolas Los Hilos 62 intrusive breccia 62 Hurdman Property 62 microdiamond results 62 Atikwa Lake property 62 mineralized envelope 62 holes DDH 62 kimberlite occurrences 62 Assay Results From 62 geophysical 62 Tumpangpitu 62 Hosco deposit 62 Cobre Grande 62 1g t Au 62 uranium mineralization intersected 62 conductive anomaly 62 Ni Cu PGM 62 Vein Zone 62 Haquira East 62 Valdecanas Vein 62 copper molybdenum porphyry 62 Dory Pond 62 Anomalous values 62 lamprophyre 62 sulphide occurrences 62 Resource Estimate 62 silica pyrite 62 Diabase Peninsula uranium 62 maiden JORC resource 62 g t Pt 62 mineralized dykes 62 sulphide deposit 62 hole GF# 62 Lower Acacus Formation 62 Pastos Grandes 61 Ground geophysics 61 airborne EM surveys 61 Azulitas 61 Assays 61 Shirotnaia zone 61 quartz sulphide 61 Tortigny 61 systematic geochemical sampling 61 Filo de Oro 61 Clementine vein 61 trenched 61 magnetic geophysical anomaly 61 Quebrada Verde 61 Magistral deposits 61 gpt silver 61 Pellivuoma 61 Hatter Graben 61 Malrok 61 ground geophysics trenching 61 ST1 Zone 61 mineralized quartz vein 61 hole RR# 61 hole CJV 61 La Mascota zone 61 epithermal vein 61 ppm U 61 Cerro Pelon 61 coincident magnetic 61 ZTEM 61 HBET 61 volcanic stratigraphy 61 airborne magnetic surveys 61 sericite schist 61 Mina Justa 61 Chiis 61 electromagnetic geophysical 61 Pasfield Lake 61 NQ diamond drilling 61 Piaba 61 Basal Zone 61 alteration mineralization 61 leachable copper mineralization 61 Nb#O# 61 Pegmatite 61 sub Athabasca unconformity

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