Related by context. All words. (Click for frequent words.) 68 Culebrilla 66 Beiya 63 Fuwan Silver 63 Dadiangou 63 Tumipampa property 63 Zuun Mod molybdenum 63 Chucapaca 63 Zheng Guang 62 Batero Quinchia 62 Changkeng 62 Pilunani 62 Luang Namtha 62 Condor de Oro 61 Valle Hondo 61 Laopandao 61 Ouro Verde 61 Cumpie Hill 61 Farellon 61 Mt Cattlin 60 Marmato Mountain 60 Kamistiatusset 60 Ayelen Vein 60 Anchaca 60 Dombraly 60 Chalchihuites 60 Tungsten Molybdenum 60 Potrerillos 60 Kalemela 60 Antapaccay 60 Yankuang 59 Inaja Project 59 Bisha Main 59 Entree Ivanhoe Mines 59 Heruga deposit 59 Ganarin 59 Los Helados 59 Cañariaco Norte 59 Ivanhoe Mines Oyu Tolgoi 59 Matagami Quebec 59 Chandgana Khavtgai 59 Pimenta Bueno 59 Shangxi 59 Las Tres Palmas 59 Zanaga 59 Simuku 59 Carheil 59 massive sulphide VMS 59 Zhaojin 59 Maricunga Gold Belt 59 Sekenke 59 Mezquite 59 Kun Manie 59 Kitongo 59 Tulks South 59 Predilecta 58 Entree Lookout Hill 58 Nithi Mountain 58 Kabanga nickel 58 Dongchuan 58 Gaoua copper gold 58 Polymetals 58 Homestake Ridge 58 Yecora 58 Kasala Project 58 Ulaan Ovoo coal 58 Tabar Islands 58 Frea vein 58 Kalana Mine 58 Yanxi Copper Deposit 58 Jinduicheng 58 Xstrata Copper Las Bambas 58 Ivanhoe Oyu Tolgoi copper 58 Beiya North 58 Canplats Camino Rojo 58 Santa Fe Ipora 58 La Trini 58 Ban Phuc Nickel 58 Pantanillo 58 Tulsequah 58 MDL Sabodala 58 East Kalimantan Indonesia 58 Benzdorp 58 Kalumines 58 Tocantinzinho 58 Gupo 58 Ovoo 58 #km# [003] 57 Agua Branca 57 Chloride Copper Mine 57 Dachang Gold Project 57 Ovoot Tolgoi coal 57 Obuasi Property 57 Ban Phuc 57 Gurupi 57 Kalplats 57 Sinchao Property 57 Xinjiang Oilfield 57 Dong Mao Huo 57 Tolgoi 57 Sourdough Ridge 57 Jinchang 57 Zafranal copper 57 Sierra Pintada 57 Inata Gold 57 Cachinal 57 Toroparu 57 Ventana La Bodega 57 Ovoot Tolgoi mine 57 Camflo West 57 El Dovio 57 Escondida Norte 57 Adavale 57 Xietongmen 57 Shirotnaia 57 Jiama 57 Aurizona gold 57 South Tally Pond 57 Sino Prosper 57 Yaramoko 57 Shyri 57 Erbahuo 57 prolifically mineralized 57 Ulaan Ovoo Coal 57 Ouro Roxo 57 Mactung 57 Mikwam 57 Sindirgi 57 Katangan Copperbelt 57 Skukum Creek 57 Phuoc Son Gold 57 Amaruk property 57 flagship La Bodega 57 Goldrea 57 Detour Gold Detour 57 Binebase 56 Increible 6 56 Beluga sapphire property 56 Nasedkino 56 Las Bolas structure 56 Luisha 56 Niblack Project 56 Nariin Sukhait 56 Batopilas 56 Sarfartoq 56 Liuhuanggou Project 56 Beyinhar 56 Kinyambwiga gold 56 Cerro Quema gold 56 Pan de Azucar 56 Macusani uranium 56 Bokan Dotson Ridge 56 Guazapares 56 Javhlant 56 Canahuire 56 Heruga copper gold 56 Porphyry Copper Gold 56 Youanmi 56 Gullewa 56 Amanta 56 NE Wollaston 56 Kinyambwiga 56 Relincho 56 Ruhuhu 56 mineral tenements 56 Newmont Ahafo 56 Huevos Verdes vein 56 Curipamba 56 Tib Lake 56 Javhlant license 56 Haquira Project 56 Nanjinzhao 56 Altynalmas 56 Fruta Del Norte 56 Jinkang 56 Ming Mine 56 Explor Resources 56 Daqing Oilfield 56 Jumping Josephine 56 Igunda 56 Kilo Moto 56 Pigiput 56 PGM deposit 56 El Compas 56 molybdenum tungsten 56 Meliadine West 56 Whim Creek 56 Schefferville Quebec 56 Porphyry Project 56 Chucara 56 Allammaq 56 Tami Mosi 56 Las Calandrias 56 Pico Machay 56 Encino Gordo 56 Tanjianshan 56 proposed Bonanza Ledge 56 Qilian 56 Nopalera 56 scheelite bearing 56 Tres Hermanas 55 Pinaya 55 Tagpura 55 La Prieta 55 Cerro las Minitas 55 Malambani 55 molybdenum rhenium copper 55 Buriti trend 55 Uzboy 55 Tres Juanes 55 Goldcorp Penasquito 55 Tulawaka 55 Storie Property 55 Syama gold 55 Huckleberry Mine 55 Lagoa Salgada 55 Aolunhua 55 Komana West 55 Catamarca Province 55 Wilcherry Hill iron ore 55 Belahouro 55 Ronguen gold 55 ODM# Zone 55 Kenieba 55 Quebrada Verde 55 Duck Pond copper 55 Buffalo Ankerite 55 volcanogenic massive sulfide 55 Komana 55 Dos Calandrias 55 Besakoa 55 Cerro Blanco 55 Favourable Lake 55 OTCQX AVARF 55 Nueva Caledonia 55 Tortigny deposit 55 Cu Au porphyry 55 Huajoto 55 Mkuvia 55 T'Boli gold silver 55 Jinfeng 55 La Bufa 55 Bananghilig 55 Constancia copper 55 gold copper porphyry 55 Incahuasi 55 Rare Earth Element REE 55 Deseado Massif 55 Tabakoto Mine 55 Ixhuatan 55 Nugget Pond Mill 55 Luxi 55 BRPM 55 Argentex polymetallic discovery 55 Azuero Peninsula 55 Cloncurry Copper Project 55 Abanico 55 Esaase Gold 55 Yanfolila 55 Brucejack 55 Goldex Mine 55 NEVADO 55 Qinling 55 Amayapampa 55 Bouroum 55 Entree Gold 55 Estrades 55 Kalana Gold 55 Selbaie 55 Chapudi 55 Chandgana Tal 55 Bolanitos mine 55 Alaskite 55 Cu Zn Pb Ag 55 stratigraphically below 55 Ag Pb Zn 55 Buesichem South 55 Aurex 55 Mapochs 55 Mount Oxide 54 Kobada 54 GoldSands 54 Bakouma 54 Eastmain Mine 54 Webbs Silver 54 Tavsan 54 StrikePoint Gold 54 Moris Mine 54 Cerro Aeropuerto 54 Ulaan Ovoo 54 Haquira Cu Mo 54 Tumipampa exploration properties 54 Abitibi Mining 54 Caramanta 54 Queensland Surat Basin 54 Guajes West 54 Cerro Prieto 54 Fabie Bay 54 Rare Earth Element 54 Manibridge 54 Sao Jorge 54 Pataz 54 Cuiu Cuiu project 54 Masbate Gold 54 Zuun Mod 54 Ustyurt region 54 Barrick Pierina 54 Maruwai 54 Duparquet Quebec 54 Sabodala gold 54 Aurizon Casa Berardi 54 Private Placement Oversubscribed 54 Rare Metal 54 Boyongan 54 Erdos Basin 54 HBB properties 54 Ronguen 54 Honeymoon Uranium 54 Reina de Oro 54 Sihayo 54 Woodlark Island 54 Soquem 54 calcrete hosted uranium 54 Wilgerup 54 Porvenir mine 54 Corp. TSX BAJ 54 Kilo Goldmines 54 Tuvatu 54 Kiska Metals 54 Ag Zn Pb 54 Marban Block 54 Rangold 54 Thach Khe 54 Fuwan Silver Project 54 Tanjianshan Mine 54 copper molybdenum gold 54 Nui Kem 54 La Balsa 54 Goldcorp Eleonore 54 El Rayo structure 54 Comaplex Minerals 54 Yuinmery 54 Nymagee Copper Mine 54 Taca Taca 54 Salar de 54 Las Bambas 54 Vaca Muerta 54 laterite mineralization 54 Silbak Premier Mine 54 Hondo Valle 54 Thundelarra Exploration 54 Drilling Extends 54 Inca de Oro 54 Simberi Island 54 Silvermex Resources 54 Puajanca Zone 54 Mt Isa Metals 54 owned Kevitsa nickel 54 Klaza property 54 Parkin Offset Dyke 54 Goz Creek 54 Mkuju 54 Junggar Basin 54 Cerro Chorcha 54 km ENE 54 Malku Khota Silver 54 LON BAO 54 Sundance Mbalam iron ore 54 Ucayali basin 54 Spinifex Ridge Iron Ore 54 Rongcheng 54 copper PGE 54 Lithium Brine 54 Mangabal 54 Gowganda Ontario 54 Spinifex Ridge 54 Langmuir Township 54 Aimag 54 Cumaru 54 tungsten ore 54 Nambija 54 Selbaie mine 54 Essakan 53 Maoling 53 Caribou Copper 53 diamondiferous kimberlite pipes 53 Mkuvia Alluvial Gold 53 polymetallic deposit 53 Gold Scheelite Dome 53 Bonasika Mining Licence 53 Carrapateena 53 Nkout 53 Mt Oxide 53 Bigrlyi 53 La Pitarrilla 53 nickel PGM 53 Huanyu 53 Bau Gold 53 Tanzania Singida Gold 53 Bafokeng Rasimone Platinum 53 Langmuir nickel 53 Picachos 53 Trelawney Chester 53 Alumbrera copper 53 Angola Endiama 53 Gahcho Kue diamond 53 Sissingue 53 itabirite 53 Silveria Property 53 TiTac 53 Carscallen Township 53 Homase 53 La Yagua 53 Goltsovoye 53 Copper PGM 53 Erdenes MGL 53 Nyinahin mining concession 53 Changyun 53 Malartic Quebec 53 Cerro Quema 53 Thach Khe iron ore 53 Chaarat 53 Burnakura 53 Tianshan 53 Xstrata Nickel Raglan 53 massive sulphide grading 53 El Colmillo Gold 53 Real Viejo 53 Tinka Resources 53 Nui Phao 53 Norlartic 53 Manbarrum 53 Tilemsi 53 Michiquillay 53 Naimanjal 53 Spinifex Ridge Molybdenum 53 Siribaya Mega structure 53 Erdenet 53 Avanco 53 Ivanhoe Oyu Tolgoi 53 Bogunay 53 Klaza 53 Yulong 53 Barrick Veladero 53 Tosca Mining 53 Waigaoqiao Free Trade 53 Thundelarra Exploration Ltd 53 Hotish 53 Sahavaara 53 Ruighoek 53 Williamson Mwadui 53 Molyhil 53 Vianey Mine 53 Andorinhas 53 Khok Adar copper 53 Mangabal South 53 Haquira copper 53 Guangxi Province 53 Salta Province Argentina 53 Scheelite Dome 53 Hunnu 53 kimberlite outcrop 53 Melchor Ocampo 53 La Corina 53 Starvation Canyon 53 La Blache 53 Andash 53 Tindals Mining Centre 53 Araguaia Nickel Project 53 Tan Thuan 53 Flordin 53 Bombore 53 Epithermal 53 Drill Hole Results 53 Marban Mine 53 Cuiu Cuiu 53 Tintina gold 53 commercially mineable 53 F2 Zone 53 Colquipucro 53 Tally Pond 53 Niakafiri Southeast 53 Kootenay Arc 53 Ovoot Tolgoi 53 Mt@#.# % [002] 53 Vilcoro Gold Property 53 Ossa Morena 53 Cannivan Gulch 53 Molycor 53 Coolgardie Gold 53 Kasagiminnis 53 Malmyzh 53 Widgiemooltha 53 Duas Barras 53 El Quevar project 53 Orapa diamond 53 Salinas Grandes 53 Duddridge Lake 53 Huxter Lane 53 Fieldex 53 Droujba kimberlite pipe 53 Piedra Parada 53 Nugget Pond 53 copper molybdenum porphyry 53 Taganito 53 Antilla Project 53 Cotabambas 53 Kagera Project 53 Shivee West 53 tungsten molybdenum 53 Expands Mineralization 53 Beibu Bay 53 Mabale Hills 53 El Picacho 53 Quartzite Arizona 53 Initial Resource Estimate 53 undeveloped Cosmo 53 Uracan 53 Lagunas Norte 53 Drilling Resumes 53 Polymetallic 53 Liontown 52 Cerro Negro gold 52 Molejon gold 52 Kettukuusikko 52 Los Pumas Manganese 52 chromite occurrences 52 Salar de Salinas Grandes 52 detailed aeromagnetic survey 52 Karara Mining 52 Wa Lawra 52 Ordos basin 52 geologically mapped 52 kimberlite cluster 52 Pingxiang 52 Xinjiang Province 52 Ambrex 52 Big Daddy chromite 52 Cauchari Olaroz 52 McFauld Lake Property 52 Boxey Point 52 Njame 52 Y Zr 52 El Limon 52 Cluff Lake 52 Sossego 52 Sadiola Gold 52 Hillgrove Resources 52 Chacay 52 Geophysical surveys 52 Amayapampa Gold 52 Cu PGM 52 Avnel 52 Cu Mo porphyry 52 Hoidas Lake 52 Minera SAC 52 Coniagas 52 Kambuna Field 52 Salta Province 52 Pidgeon Molybdenum Deposit 52 Xstrata Nickel Raglan Mine 52 Mongolia REE 52 Chifeng Inner Mongolia 52 Casa Berardi Deformation Zone 52 Tampakan copper 52 Terneras Vein 52 Temiscamingue Quebec 52 auriferous zones 52 Hosco pit 52 M#/# [002] 52 Gold Copper Porphyry 52 Belaya Gora 52 Volta Grande 52 Collurabbie 52 Tarim basin 52 Louvicourt 52 Yaxtche deposit 52 Zuun Mod Molybdenum 52 owned Cerro Jumil 52 Opinaca reservoir 52 Donkin Coal Project 52 Iris Norte 52 Mt Nakru 52 Mawson Resources 52 Southeast Pediment 52 Pastos Grandes lithium brine 52 Ixtaca Zone 52 Cibaliung 52 Mogote 52 Aurox Resources Limited 52 volcano sedimentary belt 52 Azulcocha 52 Epithermal Gold 52 YTC Resources 52 Sinaloa Graben 52 LS Nikko 52 Temoris Project 52 vein outcrops 52 Bom Jardim 52 El Volcan 52 Quesnel terrane north 52 Mbalam Iron Ore 52 Bamoos 52 ENAMI 52 Deli Jovan 52 Kalahari Copper 52 Kalimantan Indonesia 52 IMX Resources 52 Coppermoly 52 UG2 Chromitite Layer 52 Doolgunna 52 Tejamen silver 52 Bonaparte Basin 52 Solotomo 52 Mina Justa 52 Cadillac Break 52 Volcanogenic Massive Sulphide VMS 52 OYM 52 Cerro Ccopane 52 Energizer Resources 52 Boseto Copper Project 52 Athabasca Uranium 52 Kospi vein 52 Lithium Rare Metals 52 Cupixi 52 Archaean greenstone 52 Veladero 52 Salar de Atacama 52 Seabee Mine 52 Hwini Butre 52 Savannakhet 52 Phakant 52 La Montanita 52 Guayabito 52 El Valle Boinas 52 Soumber 52 Sebuku 52 Yanque deposit 52 highgrade 52 AQM Copper 52 Alashankou 52 Pallancata silver 52 Otish 52 Daye Mine 52 Hauraki Region 52 La Coipa 52 Biga Peninsula 52 Roca Mines 52 Reefton Goldfield 52 Thundelarra 52 metallogenic belt 52 Hemlo Gold 52 Xingcheng 52 polymetallic mine 52 JXTC 52 AuEx Ventures 52 Black Thor Chromite 52 Nemegosenda 52 Bepkong 52 Sinchao zinc copper 52 Bermejal 52 Guajes East 52 La Tortuga 52 Jolu 52 Kobra Mining 52 North Lanut 52 Qaidam Basin 52 Pasquia Hills 52 Plomo 52 Minitas 52 Lalor deposit 52 epithermal silver 52 Yandicoogina 52 Klaza Zone 52 Tortigny 52 Tulsequah Chief 52 Medrizien 52 Pilanesberg Project 52 San Antonio de Turiri 52 Accha deposit 52 Portugesas 52 Simberi Gold 52 Salar de Diablillos 52 El Torno gold 52 Mwambashi 52 Silver Lead Zinc 52 Darnley Bay 52 Mamahak Coal Project 51 Limonite 51 Magusi River 51 Nickel Laterite 51 Anatacau Wabamisk 51 Nolans Bore 51 Paititi San Francisco 51 uraniferous 51 Xinyao 51 Saskatchewan Athabasca Basin 51 Commences Drill Program 51 openpit mine 51 Marvel Loch 51 Antares Minerals 51 Detailed mapping 51 SouthGobi 51 Marenica 51 Kitsault Molybdenum 51 Chapada copper 51 Perkoa 51 Camflo 51 Kangaluwi 51 Rare Earth Exporters 51 Flin Flon Greenstone Belt 51 Hoyle Pond Mine 51 Dajinhe Coal 51 Barlevskoye 51 Burraga 51 Platosa Mine 51 Kubaka 51 Akwaaba Deeps 51 Taysan Copper 51 JORC Inferred Resource 51 Newmont Mining Barrick Gold 51 Quartz Claims 51 Valle Esperanza 51 Gavilanes gold 51 Yankuang Group 51 JORC compliant inferred resource 51 Goldpines 51 Porphyry Copper 51 Lake Birch Uchi 51 Nugget Pond mill 51 Nickelore 51 Kingurutik 51 Tavan Tolgoi coking coal 51 Cerro Casale deposit 51 Tete Province 51 Greenstone belt 51 Thelon Project 51 Waterberg coalfield 51 Changma 51 Emba Derho Adi Nefas 51 Gullewa Project 51 Nuukfjord Gold 51 Ada Tepe 51 Cerro Dorado 51 Mineralized Zone 51 Firawa 51 Tirisano Diamond Mine 51 Chubut Province Argentina 51 Samira Hill 51 Rubicon Minerals 51 Elga coal 51 Abitibi Greenstone belt 51 Huadong 51 Ulaan Khud North 51 Cheowa 51 Inner Mongolia autonomous 51 Huaxing 51 Nazca Peru 51 Kuranakh 51 Lithium Potash 51 Lobo Marte gold 51 Jahodna 51 Pozo De 51 Afton Ajax 51 Brookbank Deposit 51 Xiangguang 51 Basay 51 Stans Energy Corp. 51 Sakoa 51 Gold Fields Kloof 51 Sangdong tungsten molybdenum 51 alluvial tin 51 Bokan Mountain uranium 51 Nyanzaga 51 Rössing South 51 M'Phatlele 51 Breccia Ridge Zone 51 open pittable gold 51 Goldbanks 51 ST1 Zone 51 Kingurutik River 51 mineralized occurrences 51 Chihong Zinc 51 Gramalote Ridge 51 TSX ETG AMEX EGI 51 Tapajos 51 Mojave Sonora Megashear 51 Walsh Katrine 51 Valle del Cura 51 volcanogenic massive sulfide VMS 51 JNR Resources 51 Ovoot 51 Wodgina mine 51 Gupo Gold 51 Harena 51 Venturex 51 Cu Zn 51 Mchuchuma 51 Bellechasse Timmins deposit 51 Volcanic Belt 51 Commences Drilling Program 51 Los Azules copper 51 hole DH# 51 Hexi Corridor 51 Yilgarn Craton 51 Jumping Josephine Gold 51 Kun Manie nickel 51 copper platinum palladium 51 Fosterville Gold 51 Mineração 51 Eersteling 51 La Ronge Gold 51 Los Azules porphyry copper 51 Longtan 51 Hypogene 51 Industrias Peñoles 51 Mobilizes Drill 51 MOLAR 51 Gatsuurt 51 Nickel Offsets 51 Meliadine 51 Corex Gold 51 Mina Isidora 51 Shebandowan greenstone belt 51 Rio Grande Cu Au 51 Jilin Nonferrous Metal 51 Banfora 51 Pampacancha 51 alluvial workings 51 Mooseland 51 Magma Metals 51 Waratilla Cartwright Prospecting License 51 Dostyk 51 linecutting 51 Rooipoort 51 Wiluna uranium 51 Quasar Resources 51 Abitibi greenstone belt 51 West Angelas 51 Peculiar Knob 51 Jilin Liaoning 51 sulphide deposits 51 Corriente Resources 51 Ore Fault Property 51 Eldor Project 51 Longshot Ridge copper 51 Assean Lake 51 Gjegjan 51 Onaman 51 Casposo 51 Wabassi property 51 Gold Platinum Palladium 51 Neuquen Basin 51 Silverjack 51 Cerro Solo uranium 51 Uranium Molybdenum 51 Grande Cote 51 Hemlo gold 51 Newmont Yanacocha 51 Sorowar 51 Hunnu Coal 51 Mullaquana 51 Wattle Dam 51 Pajingo gold 51 ASX EXT 51 Belleterre mine 51 Resumes Drilling 51 Minera Alumbrera 51 KORES 50 Kvanefjeld 50 La Blanca 50 Sabina Silver 50 Xiangzhen 50 evaporite basin 50 Cassiar BC 50 AngloGold Ashanti Cerro Vanguardia 50 airborne magnetometer 50 Huizhou Guangdong Province 50 Asankrangwa Holdings 50 Atlin BC 50 ounce Donlin Creek 50 Zinc Lead 50 Chalice Gold 50 Airborne Geophysical Survey 50 Rare Metals 50 autonomous Xinjiang Uyghur 50 copper moly 50 Honeymoon uranium 50 Lo Increible 50 Altynalmas Gold 50 SouthGobi Energy 50 Yunnan Copper 50 #.#gpt gold [001] 50 Mingzhu 50 Changbai 50 Nullagine 50 Hongda 50 Lu'an 50 Cu porphyry 50 La Cabeza 50 Mtonya 50 Veladero gold 50 Group Metals PGM 50 El Peñon 50 Jujuy Province 50 La Noria Project 50 Creston Molybdenum Deposit 50 Reconcavo 50 Obotan 50 APV# [002] 50 molybdenum sulphide 50 Kechika Trough 50 largest PGM Cu 50 spodumene bearing 50 LaRonde mine 50 Moly Brook 50 NA Degerstrom 50 Otjikoto 50 Konkera 50 #-# compliant mineral 50 Toukhmanuk 50 Cu Zn Au Ag 50 Cerro Azul 50 Baruun Naran 50 Pakrut gold 50 Ozernoe 50 Upper Fir 50 gossan 50 Binjiang 50 Huasheng 50 Cu Mo Ag 50 Foshan Dongguan 50 Rompas 50 CSH Gold 50 stockwork breccia 50 Franconia Minerals 50 Newdico Pty Limited Newdico 50 Petro Matad 50 Cerro la Paila 50 Lipena copper gold 50 Inata gold 50 Prestea Underground 50 Baffin Island Nunavut 50 Ni PGE 50 % owned Riacho 50 Frijolar 50 Namoya Summit 50 Strawberry Flats 50 Gold Fields Driefontein 50 CVRD Inco Limited 50 Mungana 50 Skarn Zones 50 De Bron 50 Runruno gold 50 Canavieiras 50 Elandsfontein 50 Bronzewing Gold 50 Bissa Gold 50 El Tajo 50 Luoning 50 Sepon gold 50 ASX RML 50 Canariaco Norte Copper 50 Dubbo Zirconia Project 50 Dornod uranium 50 Corihuarmi gold 50 Pontax 50 Qinba 50 Uzboy Gold 50 Soledad Dipolos 50 Kuru Tegerek 50 Beyondie 50 Bobjo Mine Project 50 Molybdenum Copper 50 Kutessay II 50 Kemess Mine 50 El Colmillo gold 50 Ucore primary 50 Dargues Reef 50 La Rioja Province 50 Leprechaun Pond 50 Ncondezi 50 Poly Metallic 50 Singida Gold Project 50 mineralized outcrops 50 Bluerock Resources Ltd. 50 Pele Mountain 50 Boseto copper project 50 Gulcari 50 Peñasquito 50 Mineral Gulch 50 nickel laterite 50 Nickel Cobalt 50 Allemata 50 rich VMS mineralization 50 Copper Cobalt 50 leachable copper 50 kimberlite float 50 Northern Dancer Tungsten 50 gold copper porphyries