Related by context. All words. (Click for frequent words.) 78 gpt silver 78 tonne g t 77 tonne Au 76 t Au 76 #.# oz ton 76 #.#g t silver [003] 75 #.#g Au t [003] 75 #g t [002] 75 #.#g t gold [005] 74 #.#g Ag t 74 #.#g t gold [001] 74 #.# gpt silver 74 Au t 74 gm t 74 #.#g t [005] 74 #.#g t gold [003] 74 gpt gold 73 Pt + Pd 73 g t Pd 73 g t grammes 73 #g t [003] 73 gAu tonne 73 grams tonne 73 % Cu #.#g 73 #m@#.# g t [002] 73 g tonne 73 #.#g t silver [004] 73 #.#g t [003] 73 #.#g t gold [004] 73 #.#g t Au [001] 73 gpt 73 #.#g t [006] 72 gpt Ag 72 % MoS2 72 #.#gpt [002] 72 g t Pt 72 opt Au 72 drilled thicknesses 72 #m@#.# g t Au [007] 72 % Nb#O# 72 meters grading #.#g [002] 72 averaging #.#g t [002] 71 t Ag 71 averaging #.#g t [001] 71 averaging #.#g t [003] 71 g t 71 1g t 71 Au g t 71 #.#g t Au [003] 71 #m@#.#g t Au [003] 71 #g t Ag [002] 71 Nb#O# 71 @ #.#g t [002] 71 Ag Eq 71 g Ag 71 #.#gpt [001] 71 ppm U#O# 71 #g t Au [001] 71 #.#g t Au [006] 71 m@#.# g t Au [002] 71 % Cu Eq 71 WO3 70 interval assaying 70 + Pd + 70 g Au 70 copper #.#g t [002] 70 g mt 70 oz t Ag 70 gm Au 70 #m@#.# g t Au [002] 70 silver #.#g t 70 #g t [001] 70 #.#g t Au [004] 70 gAu t 70 #m@#.#g t Au [004] 70 #.#gpt [003] 70 #.# oz Au 70 #.#g Au t [005] 70 #.#g t Pd 70 @ #.#g t [004] 70 Silver Equivalent 69 #.#g t Au [002] 69 #m@#.# % [001] 69 t U#O# 69 gm tonne 69 metres@#.# g t Au [002] 69 + Pd 69 oz ton silver 69 #.#g Au t [002] 69 % Cu 69 #g t Ag [001] 69 % WO3 69 oz ton Ag 69 #m@#.#g t [004] 69 ppm Ag 69 oz ton Au 69 meters grading #.#g [001] 69 #.#g t silver [002] 69 Au Eq 69 g t gold 69 Y#O# 69 copper Cu 69 grammes tonne 69 gpt Au 69 V#O# 69 #m@#.#g t [006] 69 g t Ag 68 #m@#.#g t Au [006] 68 Drill intersections 68 oz t Au 68 hole MJV 68 #m@#.#g t Au [005] 68 m@#.# g t [004] 68 #,# g t 68 g t PGM 68 g t Ag Eq 68 oz ton gold 68 gm t Ag 68 metric tonne g t 68 #ppm U#O# 68 meters@#.# g t [002] 68 #m@#.#g t Au [001] 68 % Li2O 68 oz st 68 % TCu 68 oz Au ton 68 #m@#.# g t Au [001] 68 ppm eU#O# 68 grading #.#g t [002] 68 #m@#.#g t [002] 68 g t AuEq 68 metres@#.# g t [003] 68 #m@#.# g t Au [006] 68 grading #.#g t Au [001] 68 #.#g t Ag [005] 68 metres@#.# % [003] 68 Metres Averaging 68 #m@#.# g t [006] 68 g t PGE 68 Au CHL# 68 #m@#.#g t [001] 68 % Cr#O# 68 #.#gpt gold [001] 68 % eU#O# 68 g t Au 68 @ #.#g t [001] 68 chalcocite chalcopyrite 68 Mineralized intercepts 67 #.#Mlbs U#O# [001] 67 Cu Eq 67 oz t 67 #m@#.#g t gold [001] 67 AngloGold Ashanti Titiribi 67 AuEq 67 CuEq 67 #.#gpt gold [002] 67 #ppm U 67 tonne AuEq 67 ppm Ta#O# 67 #m@#.# % [004] 67 meters downhole 67 g t silver 67 #.#g t Ag [002] 67 interval grading 67 % Fe#O# 67 #.#m grading #.#g [001] 67 #.#g t Ag [001] 67 oz ton 67 #.#oz t [002] 67 % Zn 67 #.#g t [001] 67 @ #.#g t [003] 67 #m@#.# % [006] 67 HREO TREO 67 LC#C 67 zinc #.#g t 67 g t Au CHL# 67 hole #VK 67 + Pd g t 67 #.#g Au t [001] 66 -Whitsunday Regional 66 #m@#.# g t [005] 66 grading #.#g t [001] 66 3g t 66 m@#.# g t [003] 66 metres@#.# % [002] 66 #.#g t [002] 66 m grading 66 ppm Zn 66 Ag g t 66 Tonnes Au 66 #.#Mt grading [003] 66 ppm Au 66 intersected #.#m [001] 66 #.#g t Ag [004] 66 #m@#.# % [003] 66 #ppm Mo 66 intercept grading 66 g.Au t 66 Cr#O# 66 gm t Au 66 #m@#.# % [007] 66 % P#O# 66 Mt@#.# g t Au [002] 66 mineable widths 66 #.#g t silver [001] 66 #.#g t [004] 66 #.#g t Pt 66 #WR# 66 Ag oz 66 g t TPM 66 ZrO2 65 ppm Pb 65 Gold Per Tonne 65 zinc Zn 65 metres@#.# g t Au [001] 65 #.#gpt Au [001] 65 meters@#.# g t Au 65 ppb Pt 65 #.#gpt [004] 65 metres@#.#g t gold 65 interval grading #.#g 65 vein intercepts 65 Nd#O# 65 hole BRAZD 65 #.#g t gold [002] 65 oz Au t 65 K2O 65 vein widths 65 AgEq 65 intersected widths 65 weakly anomalous 65 3E PGM 65 U#O# U#O# 65 #m@#.#g t [003] 65 Au eq 65 g t Aueq 65 #m@#.# g t Au [003] 65 #.# meters downhole 65 True Width 65 m grading #.#g 65 #ppm molybdenum [002] 65 Kau# 65 t Au #.#g t [001] 64 oz.Au 64 MGZD# [002] 64 Pt g t 64 Platinum Pt 64 El Cafetal La Virgen 64 ppm molybdenum 64 Drill composites 64 #-# intersected 64 Silver Eq 64 intersected #.#m [002] 64 Yttrium Y 64 gpt Pt 64 drilled widths 64 m@#.# 64 #m@#.# g t [004] 64 Tonnes Cu 64 #m grading #.#g [002] 64 #.#gpt Au [002] 64 Au oz 64 #m@#.# g t [003] 64 Li# 64 Mt@#.# g t Au [001] 64 ore grading 64 5g t 64 Grams Per Tonne 64 hole SP# 64 TCu 64 #m@#.#g t [005] 64 Mt@#.# g t [001] 64 Grams Tonne Gold 64 assay intervals 64 Kerekounda 64 1g t Au 64 metres@#.# g t Au [003] 64 Osisko Intersects 64 Ag Pb 64 #g t Au [002] 64 Ciresata 64 Hole intersected 64 Gold Equivalent Ounces 64 La Morocha 64 #ppb gold 64 Ciresata deposit 64 vanadium pentoxide V#O# 64 g t Ta#O# 64 Copper Equivalent 64 -Muttitt 63 -Expandable Memory 63 eU#O# 63 g t Beryllium 63 m downhole 63 drill hole HR# 63 Moz Au contained 63 oxides TREO 63 gpt gpt 63 quartz veins containing 63 #ppm molybdenum [001] 63 Metres Grading 63 MoS2 63 hole HR# 63 metres@#.# % [001] 63 CuT 63 #.#g t Au [005] 63 mineralization encountered 63 Significant intersections 63 inferred ounces 63 #ppm eU#O# 63 Feet Grading 63 Pokukrom West 63 Cu Equivalent 63 sylvinite 63 Tantamaco 63 Indicated Category 63 bornite chalcopyrite 63 - -SCRT 63 trace chalcopyrite 63 veins stockworks 63 mineralization assaying 63 Rare Earth Oxides 63 stringer mineralization 63 #ppm Cu 63 g t 4E 63 #m downhole 63 Ntaka Hill 63 nickel Ni 63 gms tonne silver 63 Au incl 63 Bejucosa 63 drill intercepts 63 copper equivalent CuEq 63 gpt Pd 63 Palladium Pd 63 Ag Au 63 meters grading 63 Moz Au 63 hundred tonnes cpht 63 + Y#O# 63 Copper Cu 63 Cantarranas Vein 63 Ag eq 63 shearing alteration 63 tonnes@#.# g t Au [002] 63 U#O# 63 Ce#O# 63 #m@#.# % [005] 63 ppm zinc 63 DDD# 63 Inferred Category 63 #.#Mt grading [001] 63 wallrock 63 Au Ag 63 m@#.# g t Au [003] 63 Width m 63 ppm Mo 63 Oshiveli 62 ST1 Zone 62 vein stockworks 62 Core Length 62 section #E [004] 62 hole AK# #W# 62 #m@#.# g t Au [005] 62 chalcocite mineralization 62 ppm Ta 62 eU 3 62 drill hole NAD# 62 ppm indium 62 -Dropper 62 #ppb Au [002] 62 Inferred ounces 62 WDD# 62 Molybdenum Mo 62 #.#g t Ag [003] 62 TGDH#D 62 oz Ag 62 HREO 62 g t Au eq 62 Calcite Hill 62 tungsten WO 3 62 ppm Cu 62 chalcopyrite mineralization 62 bearing sulphide mineralization 62 #,#,# tonnes@#.# g [002] 62 ppb Pd 62 vein assayed 62 #m@#.# g t Au [004] 62 KRC# [001] 62 gr t Au 62 downhole depth 62 -ActivClient 62 molybdenite mineralization 62 m@#.# g t Au [001] 62 Length m 62 Golouma South 62 B#O# 62 Chalcopyrite 62 tonnes@#.# g t Au [001] 62 #.#m #.#m [005] 62 #RB# 62 equivalent AuEq 62 Minapampa East 62 ppm arsenic 62 metres@#.# g t [001] 62 Golouma West 62 Mbenge Zone 62 hypogene mineralization 61 #.#Mt grading [002] 61 4g t 61 cmg t 61 -Hisarcıklıoğlu 61 gms tonne 61 % Cu eq 61 Widths 61 KBDD# 61 drillhole spacing 61 Dy#O# 61 Copper Mineralization 61 carbonate veins 61 adularia 61 intensely silicified 61 EMD# encountered #.# 61 Zinc Zn 61 To Length Au 61 #.#g/tAu 61 Ouro Verde deposit 61 diorite porphyry 61 % CuT 61 g t palladium 61 sericite pyrite 61 zinc mineralization 61 anomalous copper 61 Easting Northing 61 chalcopyrite pyrite 61 Drill intercepts 61 stringer sulphides 61 Cu Zn 61 Category Tonnes 61 CuEQ 61 ZFDDH# 61 cpht 61 Lanthanum La 61 Kavola East 61 tungsten trioxide 61 #.#Mt @ [003] 61 #JD# 61 hematite mineralization 61 #.#Mt @ [002] 61 intersected anomalous 61 intersected anomalous gold 61 #CF# 61 mineralized intercepts 61 ppm cobalt 61 Pt Pd Au 61 TC# #c 61 Filo de Oro 61 #g t Ag [003] 61 Significant intercepts 61 #m@#.#g t Au [002] 61 copper mineralization intersected 61 epidote 61 downhole lengths 61 massive sulphides grading 61 Footwall Zone 61 quartz stringers 61 Ag Pb Zn 61 Zn Ag 61 Drilling Intersects 61 Mala Noche Footwall Zone 61 #m@#.# % [002] 61 SIN# 61 sphalerite galena 61 Gold equivalent AuEq 61 m@#.# g t Au [004] 61 Zn mineralization 61 tonnes@#.# g t [002] 61 g t Tantalum 61 Gold Equivalent 61 Colnic 61 KDH# [002] 61 Banded Iron Formation 61 Dip Azimuth 61 Meters Grading #.# 61 chalcedonic 61 Drill Intersections 61 Ag Eq Oz 61 Hole IKD 61 cyanide soluble 61 g tg t 61 KDH# [001] 61 BB# [002] 61 potassic altered porphyry 60 vein stockwork 60 @ #ppm U#O# 60 -Comitan 60 Mineralized intersections 60 Junnagunna 60 ppm antimony 60 - -Gundberg 60 #.#m #.#m [004] 60 Anomalous gold 60 Meters Averaging 60 NiEq 60 oxide mineralization 60 Significant assay 60 Adi Nefas 60 ft. ft. 60 geochemically anomalous 60 MK RC 60 hole DDH# 60 iron sulphides 60 Hangingwall 60 Gold Equivalent AuEq 60 itabirite 60 m@#.# % 60 g t indium 60 Porphyry Zone 60 -Inkpop 60 Marge Vein 60 mineralized envelope 60 variably mineralized 60 sericitic 60 quartz hematite 60 Hole PXE 60 tonnes grading #.#g t [002] 60 Li2O 60 #Mt grading [002] 60 g t g t 60 Rhodium Rh 60 reassayed 60 silver equivalent AgEq 60 grade intercepts 60 BRAZD 60 mineralized widths 60 Mantouchiche showing 60 DEBD 60 - -Vijitr 60 strongly silicified 60 gm mt 60 % Cu #.#g/tAu 60 Tonnes Category 60 4E PGM 60 Cu Au 60 Au eqv 60 La#O# 60 Early Joli Fou 60 West Gabbro Zone 60 hole FC# 60 Cu Pb 60 gt Au 60 quartz sericite pyrite 60 Tonnages 60 stockwork breccia 60 quartz ankerite 60 Hole EC# 60 stockwork mineralization 60 intersected #.#g t 60 Zn Cu Ag 60 Trench TKB# 60 mineralization grading 60 t Pd 60 Million ozs 60 quartz arsenopyrite 60 YAR# 60 Ni Cu PGM mineralization 60 meters grading #.#g [003] 60 bearing quartz carbonate 60 Rusk Zone 60 Huarabagoo 60 #,#,# Ag eq 60 Anomalous uranium 60 stockwork veined 60 chalcopyrite copper 60 magnetite gneiss 60 disseminated chalcopyrite 60 phosphate P#O# 60 ton U#O# 60 Intersected 60 Cr Fe 60 holes BD# 60 Kourouloulou 60 intersected mineralized zones 60 disseminated sulphide mineralization 60 bornite 60 Zirconium Zr 60 chalcocite 60 zinc sulphides 60 molybdenum Mo 60 Dombraly 60 g t Gallium 60 anomalous mineralization 60 m Width m 60 DDH E# 60 Thicknesses 60 anomalous arsenic 60 quartz stockworks 60 alunite alteration 60 t/m3 60 g t Ounces 60 Naciente Quebrada Pedregosa 60 Tonnes Au g t 60 minor chalcopyrite 60 TRK# 60 intersected #m@#.# 60 Basal Zone 60 gms tonne gold 60 #m@#.#g t gold [002] 60 % CuEQ 60 pyrite pyrrhotite chalcopyrite 60 adit sampling 60 -Joel bro Benji 60 #m@#.# g t [001] 60 Calandria Norte 59 MAG Silver Reports 59 copper sulphide mineralization 59 Payable Metal 59 N#U# 59 MS Veins 59 Au Ag Pb Zn 59 Grams Tonne 59 #.#Mt [001] 59 epithermal quartz 59 tonne TPM 59 Mt@#.# % [001] 59 Cu Zn Au Ag 59 Mineralized intervals 59 Snowfield Zone 59 Cu Ag 59 mineralized interval 59 Ag Cu Zn 59 Ta#O# 59 -Baralt 59 silicified breccia 59 Mineralization consists 59 molybdenite MoS2 59 #.#Mt @ [001] 59 tonnes grading #.#g t [001] 59 #.#-#.# m [001] 59 chalcopyrite sphalerite 59 intersecting mineralization 59 Amun Deeps 59 Juanicipio Vein 59 -Greg Stoda Palm Beach 59 D# #B 59 oxidized mineralization 59 massive sulphide grading 59 outcropping mineralization 59 hole DH# 59 brecciated quartz 59 sphalerite zinc 59 Rare Earth Oxides TREO 59 GPGR 59 Niakafiri Southeast 59 -Rassbach 59 Cu Zn Ag 59 intense silicification 59 silicified porphyry 59 ppm U# 59 Tonnes g t 59 Tres Juanes Norte 59 polymetallic Au Ag 59 Marta Este 59 lbs U#O# 59 Maki Medina 59 pervasive ankerite 59 ppb Au 59 Southwest Oyu 59 -Wauk 59 Kuriskova 59 Veta Madre 59 Cu Mo 59 Indicated mineral 59 magnetite alteration 59 Sulphides 59 downdip extension 59 Expands Mineralization 59 Riscos 59 quartz feldspar 59 anomalous antimony 59 anomalous Au 59 Malrok 59 - -Schwenkler 59 MPD# 59 ppm U 59 sulphide zones 59 Ag Cu 59 tonnes grading #.# 59 DUB# 59 mineralized quartz vein 59 disseminated sulphide 59 #.#/lb Pb 59 -Chateau Indage 59 Anomalous values 59 Syenite 59 Nueva Concepcion 59 Encino Vein 59 g t Au CM# 59 lithium oxide 59 -Gody 59 ounces AuEq 59 sulphide breccia 59 pyrite altered 59 #,#,# tonnes grading [002] 59 footwall alteration 59 #,#,# tonnes grading [003] 59 #.#gpt TPM 59 intersected mineralized 59 Drill hole GCL# 59 Hugla Tepe 59 massive sulphide mineralization 59 Reported widths 59 quartz pyrite 59 sulphide mineralization intersected 59 #.#g t PGM 59 Au Cu 59 Drill Hole 59 mineralized skarn 59 intersected anomalous radioactivity 59 tetrahedrite 59 Interval m 59 vein outcrops 59 Ounces Per Ton 59 Merensky Reef 59 Au equivalence 59 sericite 59 quartz calcite 59 Ore Mined 59 Refined platinum 59 Dubenski Shaft Zone 59 intensely sheared silicified 59 hole MWNE 59 tonnes@#.# % [003] 59 massive sulphide horizon 59 Yampi Member 59 Aueq 59 INTERSECTS 59 pyrite sphalerite 59 mineralized uncut 59 leachable copper 59 biotite chlorite 59 phyllic altered 59 - -Linda Shrieves Orlando Sentinel 59 Cantarranas 59 quartz carbonate veining 59 intercept widths 59 Silver Mineralization 59 #.#Mlbs U#O# [002] 59 macrocrystic 59 Gold Intercepts 59 bearing breccias 59 UG2 Chromitite Layer 59 surface outcrops 59 Cerium Ce 59 Massive Sulphide 59 NQ diamond 59 #.#Moz [002] 59 #.#Mlbs 59 Dioulafoundou 59 ultramafics 59 stringer sulphide mineralization 59 molybdenum mineralization 59 stockwork veining 59 silicified quartz 59 carbonate altered 59 EJD# 59 sulphide intercepts 59 Ordinary kriging 59 fuchsite 59 Grade Contained 59 hole TL# 59 bearing quartz tourmaline 59 meters BA# 59 PdA Extension 59 Gold Mineralization 59 El Domo deposit 59 ICE# [002] 58 unoxidized 58 massive sulfides 58 pathfinder elements 58 Drilling Extends 58 Gold Oxide Skarn 58 Au Cu Ag 58 Quiruvilca 58 - -Rosseau Asset Management 58 Massive Sulphides 58 altered diorite 58 Drill Hole Results 58 Contained Metal 58 Contained Ounces 58 Cu Pb Zn 58 Mineralization occurs 58 Delineation Drilling 58 Positive Scoping Study 58 sulfide mineralization 58 intersected disseminated 58 downhole intervals 58 copper molybdenum mineralization 58 Ounces Tonnes 58 Mineralized zones 58 previously unsampled 58 Stockwork 58 biotitic 58 northeast trending sheeted 58 veinlet 58 sericite schist 58 ounces Ag eq 58 Shirotnaia 58 silica pyrite 58 % copper #.#g 58 Supergene 58 HBET 58 MQV 58 FMR dikes 58 Rhenium Re 58 Fe#O# 58 -TM microdisplays 58 covellite 58 Classification Tonnes 58 alunite 58 tungsten WO3 58 SADD# 58 -stephen lawson@idg.com 58 Drill Hole # 58 epithermal stockwork 58 copper #.#g t [001] 58 quartz sericite 58 Ultramafic Zone 58 #m grading #.#g [001] 58 #.#oz t [001] 58 pentlandite 58 mineralized gabbro 58 grade mineralization intersected 58 -original Hitlist 58 Magambazi 58 Hypogene 58 CMR# 58 Zn Au 58 Au Equivalent 58 Footwall 58 LREO 58 potassic altered 58 El Orito 58 silicification quartz 58 g t Au MGZD# 58 pyrite chalcopyrite 58 Las Boquillas 58 aplite 58 holes #WR# 58 Intercepts 58 altered silicified 58 inferred tonnes grading 58 Cu Pb Zn Ag 58 chalcopyrite bornite 58 Near Surface 58 -about.me 58 DDH# [002] 58 -Dins 58 vanadium mineralization 58 HG Sulphide zone 58 Zn Pb 58 copper molybdenum gold 58 trench sampling 58 Kena Property 58 #WA 58 South Minita 58 disseminated sulfides 58 stockwork veinlets 58 ppb gold 58 KBRC# 58 Soil geochemical 58 intersected variably 58 Tonnes Grade 58 abundant pyrite 58 Ouro Verde Deposit 58 sericitized 58 True Width CL 58 skarn horizon 58 #.#m #.#m [003] 58 intervals assaying 58 Au g tx 58 -semitransparent 58 fracture fillings 58 Ounces -Recipe Chicken 58 -Amir Maftah 58 #W# [002] 58 mineralized veins 58 potassic alteration 58 anomalous radioactivity 58 massive sulphides 58 Ounces produced 58 HREO + Y#O# 58 disseminated stringer 58 sulphide mineralized 58 quartz carbonate 58 Inferred category 58 footwall mineralization 58 Alaskite 58 net textured sulphides 58 sericite carbonate 58 Sleeping Giant Zone 58 variably altered 58 alaskite 58 Azulitas 58 mineralized intercept 58 potassically altered 58 #.#M ounces 58 anomalous gold 58 Cu mineralization 58 stockwork zone 58 Cu Au mineralization 58 Gongondy 58 trending mineralized 58 True thicknesses 58 -Patney 58 Ag Zn 58 Silver Equiv 58 ODAE 58 Cerro la Paila 58 pyrite pyrrhotite 58 Cu Ni Pt Pd 58 Assay Results 58 chlorite sericite 58 Dingman Property 58 mineralized quartz 58 Anomalous copper 58 -Lightning goaltender Nikolai 58 semi massive sulphides 58 Yaxtche deposit 58 mineralized intersections 58 acid soluble 58 Ciresata Porphyry 58 LMD# 58 #ppm [002] 58 Nfante West 58 Deposit Mineral Resource 58 altered rhyolite 58 sulphide intersections 58 quartz veinlets 58 Minita deposit 58 #Mt grading [001] 58 quartz adularia veins 58 Highly anomalous 58 TRDH 58 variography 58 g t Au Eq 58 mineralized zones intersected 58 Updated Resource Estimate 58 Au Cu mineralization 58 sulphide mineralization 58 copper supergene 58 Pokukrom East 58 Bisha Main 58 Inferred resource 58 #.#/oz Ag [001] 58 platinum Pt 58 Drill Hole RCHE 58 opt Au Equiv 58 saprolite 58 Dysprosium Dy 58 sphalerite 58 - -Informed Consent 58 anomalous molybdenum 58 Drilling Underway 58 ankerite 58 Mineralised 57 vein breccia 57 #.#/oz Ag [002] 57 Aappaluttoq 57 mineralized envelopes 57 Haquira Project 57 soil geochemical anomaly 57 Breccia Zone 57 Grade Ounces 57 -Amrut 57 volcanogenic massive sulphides VMS 57 La Mascota zone 57 grade drill intercepts 57 ppm lithium 57 Rovina Porphyry 57 #.#g t #.#g t 57 Au Au 57 - -Anne Milling 57 potentially bulk minable 57 Fula Tepe 57 #mV V 57 #ppb [003] 57 Calandria Sur 57 Equivalent x 57 Langmuir Nickel Discovery 57 tantalum oxide 57 tourmaline veins 57 grade massive sulphides 57 Onkelo 57 Riscos de Oro 57 RRC# 57 Drilling Intercepts 57 sulphide minerals