Related by context. All words. (Click for frequent words.) 82 copper #.#g t [002] 82 % Cu Eq 82 #.#g t silver [003] 82 t Au 82 g t Pt 80 t Au #.#g t [001] 80 % MoS2 80 Pt + Pd 80 #.#g t Pd 79 meters grading #.#g [002] 79 #.#g t gold [001] 79 + Pd + 78 m@#.# g t Au [002] 78 grading #.#g t Au [001] 78 #.#g t silver [004] 78 t Ag 78 g t PGM 78 #.#g Ag t 78 % WO3 77 #.#g Au t [003] 77 m@#.# g t [004] 77 #.#g t [003] 77 g t Pd 77 averaging #.#g t [001] 77 averaging #.#g t [003] 77 % Nb#O# 76 ppm Ag 76 #.#g t Ag [005] 76 + Pd 76 #m@#.# g t [002] 76 g mt 76 #.#g t Ag [001] 76 Au t 76 #.#g t Ag [002] 76 g t PGE 76 metres@#.# % [003] 76 #m@#.# g t Au [002] 76 averaging #.#g t [002] 75 #m@#.#g t Au [004] 75 #.#g t gold [004] 75 #.#g t [005] 75 #.#gpt Au [002] 75 #m@#.#g t Au [003] 75 % eU#O# 75 intersected #.#m [001] 75 gm t Ag 75 m@#.# g t [003] 75 gm t 75 CuT 75 % Cu 75 intersected #.#m [002] 75 @ #.#g t [002] 75 metres@#.# g t Au [002] 75 ppb Pt 75 Cu Eq 75 #.# oz ton 75 oz t Au 75 ppm Pb 75 ppm molybdenum 75 @ #.#g t [004] 74 g Ag 74 Nb#O# 74 gpt Ag 74 -Hisarcıklıoğlu 74 ppm Zn 74 tonne Au 74 gpt silver 74 #m@#.# g t Au [007] 74 AngloGold Ashanti Titiribi 74 #.#gpt [001] 74 #.#g t Au [001] 74 interval assaying 74 grams tonne 74 #.#g t gold [005] 74 gm tonne 74 #g t [002] 73 Molybdenum Mo 73 #g t Ag [002] 73 gm t Au 73 % Cu eq 73 #.#g t [006] 73 gr t Au 73 #.# gpt silver 73 oz t Ag 73 ppb Pd 73 #.#g t Au [003] 73 #.#g t Ag [004] 73 Au g t 73 #m@#.#g t Au [001] 73 Y#O# 73 per tonne gpt 73 #.#g t [002] 73 ppm Cu 73 gAu tonne 73 #m@#.#g t Au [006] 73 oz ton Au 73 #.#g Au t [005] 73 #.#oz t [002] 73 #g t [003] 73 gpt Pt 73 #,# g t 73 #.# oz Au 73 ppm eU#O# 73 #m@#.# % [001] 73 metres@#.# g t Au [001] 73 #.#g t [004] 73 #.#g Au t [002] 72 m@#.# 72 m@#.# g t Au [003] 72 @ #.#g t [003] 72 Metres Averaging 72 #ppm U 72 oz ton silver 72 #g t Au [001] 72 ppm U#O# 72 -Muttitt 72 - -Schwenkler 72 #m@#.# % [004] 72 % Fe#O# 72 #.#g t silver [002] 72 #m@#.# g t Au [006] 72 #.#g t Au [005] 72 opt Au 72 drilled thicknesses 72 #ppb Au [002] 72 ppm Ta#O# 72 copper Cu 72 #m@#.# % [007] 72 #ppm Mo 72 g Au 72 g t TPM 72 % P#O# 72 -Expandable Memory 72 ppm Mo 71 g t AuEq 71 grammes tonne 71 #ppm molybdenum [001] 71 g t Beryllium 71 % Zn 71 #.#gpt [002] 71 Grams Per Tonne 71 Zn Ag 71 zinc #.#g t 71 WO3 71 eU 3 71 % TCu 71 ppm U 71 Tonnes Cu 71 #m@#.#g t [002] 71 oz st 71 - -Informed Consent 71 intersected #m@#.# 71 #m@#.#g t [006] 71 #.#m #.#m [005] 71 ppm Au 71 gpt gpt 71 oz ton Ag 71 #.#g t Au [006] 71 -Chateau Indage 71 Osisko Intersects 71 interval grading #.#g 71 #m@#.#g t [001] 71 massive sulphides grading 71 #m@#.# g t Au [001] 71 Metres Grading 71 m grading 71 #.#g t gold [003] 71 ppm cobalt 71 meters@#.# g t Au 71 #.#g t Au [004] 71 g.Au t 71 gpt Au 71 INTERSECTS 71 #.#g t Ag [003] 71 #m@#.#g t Au [005] 71 oz Au t 70 Au CHL# 70 meters grading #.#g [001] 70 + Pd g t 70 #m@#.# % [002] 70 Mt@#.# g t Au [001] 70 oz ton gold 70 #.#oz t [001] 70 Li# 70 gms tonne silver 70 #m@#.# g t Au [005] 70 #m@#.# g t [006] 70 Pt g t 70 1g t 70 #g t [001] 70 g t Ag 70 #ppm Cu 70 #CF# 70 #m@#.# % [005] 70 Ag Eq 70 #.# meters downhole 70 g tonne 70 Ag Au 70 gpt Pd 70 hole MJV 70 #m@#.# g t [005] 70 -Whitsunday Regional 70 g t grammes 70 #g t Ag [001] 70 g t 70 g tg t 70 Grams Tonne Gold 70 Ag g t 70 - -Anne Milling 70 Cr#O# 70 True Width 70 g t Tantalum 70 m Width m 70 -Dropper 70 Meters Grading #.# 70 Au Ag 70 metres@#.# g t Au [003] 70 Moz Au contained 70 #.#gpt [003] 70 hole BRAZD 70 t Pd 69 #.#gpt gold [002] 69 #.#g t Au [002] 69 #.#g Au t [001] 69 interval grading 69 Meters Averaging 69 m grading #.#g 69 #.#gpt Au [001] 69 metres@#.# % [002] 69 gpt 69 Copper Cu 69 @ #.#g t [001] 69 drilled widths 69 Cu Ag 69 #m@#.# % [006] 69 m@#.# % 69 g t 4E 69 TCu 69 m@#.# g t Au [001] 69 -Dins 69 Zinc Zn 69 Copper Equivalent 69 #m@#.# % [003] 69 ppm Ta 69 - -fascist regimes 69 CuEq 69 % Cr#O# 69 nickel Ni 69 NiEq 69 Feet Grading 69 Ag Pb 69 Au incl 69 Cu Equivalent 69 #.#g t Pt 69 Drill intersections 69 #m@#.#g t [003] 69 LC#C 69 tonnes grading #.#g t [002] 69 #m@#.# g t [003] 69 #ppb gold 69 METRES OF 69 - -Staehely 69 Au g tx 69 intensely silicified 69 metres@#.#g t gold 69 tonnes@#.# % [003] 68 g t Au 68 metres@#.# g t [003] 68 gm Au 68 gAu t 68 weakly anomalous 68 g t Gallium 68 intersected anomalous 68 #m@#.#g t [004] 68 #m@#.# g t Au [004] 68 Mt@#.# g t Au [002] 68 % Li2O 68 t/m3 68 Hole intersected 68 Category Tonnes 68 % copper #.#g 68 #m@#.#g t gold [001] 68 g t Aueq 68 hypogene mineralization 68 silver #.#g t 68 #ppm molybdenum [002] 68 Mt@#.# g t [001] 68 #m grading #.#g [002] 68 % Cu #.#g/tAu 68 oz Au ton 68 #.#g t silver [001] 68 AgEq 68 oz t 68 #m@#.# g t Au [003] 68 Au Eq 68 m downhole 68 #.#Mlbs U#O# [001] 68 vanadium pentoxide V#O# 68 K2O 68 Cantarranas Vein 68 KRC# [001] 68 meters@#.# g t [002] 68 KDH# [001] 68 gms tonne gold 68 - -Rosseau Asset Management 68 DDD# 68 #.#m grading #.#g [001] 68 gpt gold 68 P#O# 68 #m downhole 68 + Y#O# 68 -ActivClient 68 - -ASBMB 68 ozs Au 68 Ag Cu 68 BRAZD 68 metres@#.# % [001] 68 - -winger Colby Armstrong 68 chalcocite chalcopyrite 68 HREO TREO 68 zinc Zn 68 grading #.#g t [001] 68 g t Niobium 68 1g t Au 67 #.#gpt [004] 67 g t gold 67 Au eq 67 - -Vijitr 67 Cu Mo 67 Kau# 67 Ounces -Recipe Chicken 67 Tonnes Au g t 67 hole #VK 67 Moz Au 67 ppm antimony 67 -stephen lawson@idg.com 67 tonne g t 67 #,#,# tonnes grading [003] 67 #g t Ag [003] 67 -Comitan 67 - -OCONEE 67 #.#m #.#m [004] 67 Ag oz 67 sericite pyrite 67 Gold Per Tonne 67 ppm Sb 67 Ce#O# 67 #.#/lb Pb 67 grading #.#g t [002] 67 intercept grading 67 Nd#O# 67 -USGS geophysicist 67 As Sb Hg 67 gt Au 67 #ppm U#O# 67 biotite chlorite 67 m@#.# g t Au [004] 67 Oz Ton 67 ppm arsenic 67 #WR# 67 tonnes grading #.# 67 #,#,# tonnes grading [002] 67 ppm zinc 67 - -Gundberg 67 Ciresata deposit 67 Silver Equivalent 67 Hole EC# 67 Cu Zn 67 Million ozs 67 #.#g t [001] 67 Pt Pd Au 67 pyrite altered 67 Hugla Tepe 67 #.#m #.#m #.#m [003] 67 #JD# 67 g t Ta#O# 66 #/-# 66 diorite porphyry 66 - -SCRT 66 INFERRED 66 g t Ounces 66 Au oz 66 Copper Mineralization 66 #-# intersected 66 3E PGM 66 Cu 66 HREO 66 g t Ag Eq 66 vein stockworks 66 - -Laemmle Sunset 5 66 g t Au CHL# 66 Ounces Tonnes 66 #m@#.#g t Au [002] 66 lbs U#O# 66 #m@#.#g t [005] 66 g t Au eq 66 ZrO2 66 #m@#.# g t [004] 66 -Rassbach 66 g t Rubidium 66 Cu Pb Zn 66 #.#Mt @ [002] 66 massive sulphide grading 66 g t silver 66 intersected mineralized 66 hole EC# 66 g t Au Eq 66 - -Linda Shrieves Orlando Sentinel 66 intersected anomalous gold 66 - -Cavlan 66 U#O# U#O# 66 #.#Mt @ [003] 66 oxides TREO 66 t U#O# 66 chalcopyrite mineralization 66 eU#O# 66 mineralization grading 66 g t g t 66 minor chalcopyrite 66 MINERALIZATION 66 - -potassium salts 66 #.#m #.#m [003] 66 Hole SE# 66 3g t 66 V#O# 66 pyrite pyrrhotite chalcopyrite 66 t Au #.#g t [002] 66 tungsten trioxide 66 -NTRA Thoroughbred Poll 66 - -Dave Tollefson 66 Cu Au 66 Zirconium Zr 66 % CuT 66 hole DH# 66 ppm U# 66 quartz feldspar 66 meters downhole 66 Colnic 66 geochemically anomalous 66 @ #ppm eU#O# 65 mineable widths 65 sphalerite galena 65 Zn Cu Ag 65 AuEq 65 Southwest Oyu 65 gms tonne 65 SIN# 65 carbonate veins 65 Dip -# 65 To Length Au 65 Equiv 65 silicified porphyry 65 #.#gpt gold [001] 65 drill hole NAD# 65 Core Length 65 TRK# 65 Ta#O# 65 Cu Pb 65 #g t Au [002] 65 KERC# 65 disseminated chalcopyrite 65 #RB# 65 oz ton 65 Sulphides 65 @ #ppm U#O# 65 #N [003] 65 Cu Au Mo 65 -Roadway Inn 65 chalcopyrite pyrite 65 Tonnes Au 65 strongly silicified 65 KBRC# 65 Dy#O# 65 #,#,# tonnes@#.# g [002] 65 Mbenge Zone 65 wallrock 65 ppm indium 65 DDH# [001] 65 vein stockwork 65 ppm Ni 65 Mt@#.# % [001] 65 copper #.#g t [001] 65 #ppm eU#O# 65 Zn Au 65 - -Justice Timothy Studdert 65 Grade Ounces 65 -Gody 65 SADD# 65 sericite 65 meters@#.# 65 Equivalent x 65 sericitic 65 copper equivalent CuEq 65 ICE# [002] 65 mineralization assaying 65 anomalous copper 65 anomalous arsenic 65 stockwork veining 65 g t palladium 65 anomalous Au 65 #Mt grading [001] 65 hole HR# 65 #.#Mt grading [003] 65 altered diorite 65 chalcopyrite sphalerite 65 MPD# 65 ppb Au 65 #ppb [001] 65 Gold Equivalent 65 intersected widths 65 pyrite sphalerite 65 Mineralized intercepts 65 Au Cu Ag 65 -OptiPlex FX# 65 quartz sericite pyrite 65 hole AK# #W# 65 meters grading 65 quartz arsenopyrite 65 g t Au CM# 65 silicified quartz 65 Au Cu 65 ppm lithium 65 metres@#.# g t [001] 64 -human papilloma viruses 64 Drilling Intersects 64 molybdenum Mo 64 -PC DMIS 64 brecciated quartz 64 Chalcopyrite 64 #E [002] 64 -ALBANY NY AP/# WINS 64 -Jacqueline Susann 64 #TR# 64 -Simeulue Island 64 ppm uranium 64 Ounces Au 64 altered silicified 64 HOLE NO 64 stockwork mineralization 64 tonnes@#.# g t Au [001] 64 meters grading #.#g [003] 64 aircore drill holes 64 downhole depth 64 Ag Pb Zn 64 Inferred Category 64 To Width Au 64 CuEQ 64 tonne AuEq 64 Intersected 64 meters downhole depth 64 - -Study Abroad Fair 64 potassic altered porphyry 64 U#O# 64 -Greg Stoda Palm Beach 64 Supergene 64 #.#m grading #.#g [002] 64 vein intercepts 64 TGDH#D 64 quartz hematite 64 #Mt grading [002] 64 Diamond Drill Holes 64 g t Ta 64 stockwork breccia 64 3 O8 64 oz Ag 64 INTERCEPTS 64 Cu Zn Ag 64 gm mt 64 quartz magnetite chalcopyrite 64 WDD# 64 intersected anomalous radioactivity 64 Ntaka Hill 64 yttrium Y 64 skarn horizon 64 intersected kimberlite 64 Cu Ni Co 64 Total Contained Metal 64 mineralized pegmatite 64 TWDDH 64 #,#-#,# ft. Loc 64 Stockwork 64 #.#gpt TPM 64 Million Ounces 64 stringer mineralization 64 section #E [004] 64 KRC# [002] 64 quartz veined 64 Ag g tx 64 intersected massive sulphide 64 La#O# 64 Ounces Per Ton 64 #ppm [002] 64 ton U#O# 64 #m@#.# 64 Mlbs 64 g t indium 64 stockwork veined 64 True Width CL 64 ZFDDH# 64 hole SP# 64 ppm boron 64 Length m 64 -Inkpop 64 arsenic antimony mercury 64 lithium oxide 64 Lanthanum La 64 - -Federal Limbuwan 64 Drill hole GCL# 64 Au Ag Cu 64 -Pisarro 64 Zn mineralization 64 bornite chalcopyrite 64 pyrite pyrrhotite 64 BB# [002] 64 Terbium Tb 63 Pokukrom West 63 chalcedonic 63 -OLD MAN 63 Nb 63 Li2O 63 -#/# [002] 63 Pb Zn Cu 63 quartz sericite 63 ppm Nb 63 Ni Cu 63 TW Incl 63 quartz sulphide veins 63 variably altered 63 ppb gold 63 Cr Fe 63 #.#g/tAu 63 Mt@#.# g t [002] 63 Bejucosa 63 vein breccia 63 chloritized 63 Au Ag Pb Zn 63 grading #g 63 5g t 63 Cu mineralization 63 Ni Cu PGM mineralization 63 TRDH 63 TW VG 63 drill hole MWNE 63 pathfinder elements 63 chalcopyrite bornite 63 Cu Pb Zn Ag 63 chlorite pyrite 63 -pass code SHOPNBC 63 veinlet 63 potassically altered 63 MoS2 63 tungsten WO 3 63 intensely sheared silicified 63 Golouma West 63 metres@#.#g t Au 63 g t silver #Moz 63 vein assayed 63 Oshiveli 63 drillhole spacing 63 Indicated Category 63 Calandria Norte 63 quartz ankerite 63 Drill composites 63 hematized 63 spodumene rich 63 trace chalcopyrite 63 Drill Intersections 63 variably mineralized 63 - -Eakring 63 Dienemera 63 chalcocite mineralization 63 semi massive sulphide 63 -Wauk 63 potassic altered 63 anomalous Cu 63 ore grading 63 Dip Azimuth 63 sylvinite 63 drill hole HR# 63 Gold Intersected 63 Expands Mineralization 63 ankerite 63 shearing alteration 63 Cerium Ce 63 epidote 63 Indicated mineral 63 Ore Mined 63 Zn 63 Cu Au Ag 63 hole MWNE 63 Reverse circulation 63 Grade Contained 63 disseminated stringer 63 SPDD 63 #.#Mt grading [001] 63 epithermal stockwork 63 #.# VOY UZ 63 drillhole intersected 63 tonnes@#.# g t Au [002] 63 Rovina Porphyry 63 stringer sulphides 63 Mineralized intervals 63 Tiriganiaq 63 Meters Grading 63 #m@#.#g t gold [002] 63 Drill Holes 63 % CuEQ 63 - -Klontz 63 #.#m TW 63 Silver Eq 63 Kerekounda 63 Quartz vein 63 intersected disseminated 63 KDH# [002] 63 section #N [002] 63 MAG Silver Reports 63 g t TPM Cu 63 chlorite sericite 63 Golouma South 63 Anomalous copper 63 Cu Ni 63 #.#-#.# m [001] 63 -Kosslyn 63 quartz stringers 63 Near Surface 63 #.#g t gold [002] 63 anomalous bismuth 63 chalcopyrite copper 63 quartz veins containing 63 intersected variably 63 ft. TDD 63 FMR dikes 63 Contained Ounces 62 veins stockworks 62 carbonaceous mudstone 62 TC# #c 62 cmg t 62 polymetallic Au Ag 62 Cu Zn Au Ag 62 silicified breccia 62 KBDD# 62 Tonnes g t 62 sub Athabasca unconformity 62 holes BD# 62 holes IKD 62 #.#/#.#m 62 quartz pyrite 62 HBET 62 CMR# 62 -Salon Rebecca Traister 62 metric tonne g t 62 silicified zones 62 quartz calcite 62 Anomalous uranium 62 #.#Mlb [001] 62 hole BG# 62 g t Au Ounces 62 Ouro Verde deposit 62 Rare Earth Oxides 62 LMD# 62 oz.Au 62 Chiis 62 Hole CM# 62 fuchsite 62 Naciente Quebrada Pedregosa 62 Au Equivalent 62 MGZD# [002] 62 Drill Hole Results 62 assay intervals 62 diopside 62 -Baralt 62 El Cafetal La Virgen 62 EGD# 62 Massive Sulphides 62 #.#g Au t [004] 62 Width m 62 epithermal quartz 62 Tres Juanes Norte 62 -Routledge #/#/# 62 Dioulafoundou 62 silicification quartz 62 EMD# encountered #.# 62 Hole PXE 62 Niobium Nb 62 Eu#O# 62 hole NC# 62 -Living Independently 62 yttrium oxide 62 Takom 62 platinum Pt 62 downhole lengths 62 DDH IAX 62 Ciresata Porphyry 62 ml oz 62 downhole intervals 62 DDH# [002] 62 semi massive sulphides 62 magnetite pyrite 62 Grade Mineralization 62 tetrahedrite 62 stockwork zones 62 argillic altered 62 Kavola East 62 MGZD# [001] 62 Hondo Valle 62 EJD# 62 Anomalous gold 62 -vs. Sonjay Dutt 62 tonnes@#.# g t [002] 62 pyrite arsenopyrite 62 Nb Ta 62 weakly mineralized 62 -AGEIA PhysX processor 62 Silver Mineralization 62 #.#g t PGM 62 Mineralization intersected 62 DB#B# 62 silica pyrite 62 Drill Hole 62 Contained Metal 62 anomalous mineralization 62 RRC# 62 Adi Nefas 62 adit sampling 62 variably silicified 62 -Jerry Seinfield 62 g tg tg tg 62 cpht 62 Azimuth Dip 62 bornite 62 carbonatized 62 mineralized dykes 62 net textured sulphides 62 quartz stockwork veining 62 Au equivalence 62 Gold Mineralization 62 -SYK 62 tg t 62 #m grading #.#g [001] 62 AuEq g t 62 Palladium Pd 62 Thor Vein 62 hole NAD# 62 % Zn Eq 62 Ag Cu Zn 62 m@#.# g t [002] 62 Zafranal copper 62 GPGR 62 Mineralization consists 62 sericite carbonate 62 -Osmanli 62 DEBD 62 Quartz vein gossan 62 intersected mineralized zones 61 #CBN 61 Alaskite 61 MK RC 61 -Amrut 61 Rhodium Rh 61 Footwall Zone 61 grade massive sulphides 61 anomalous uranium 61 g t uncut 61 mineralized intercepts 61 Qtz 61 Hangingwall 61 silicified limestone 61 disseminated sulphide 61 -Nach dem 61 -Nasdaq ZRAN 61 pentlandite 61 gold #.#Moz 61 Interval m 61 #ppb Au [001] 61 mineralized quartz vein 61 mineralization encountered 61 niobium oxide Nb#O# 61 anomalous zinc 61 #ppb [002] 61 #.#Mt [004] 61 previously unsampled 61 WIDTH 61 volcanic breccias 61 opt Au Equiv 61 cerium Ce 61 Tonnes Grade 61 Merensky Reef 61 -SatMAX R 61 serpentinized peridotite 61 granodiorites 61 La Morocha 61 Gold Intercepts 61 -Pincetich 61 tourmaline veins 61 YAR# 61 tonnes@#.# g t [001] 61 - -DEADLY CRASH 61 silica carbonate 61 Soyabean Ext Bulk 61 MoO3 61 -Kozeny extradition 61 Infill Drilling 61 disseminated arsenopyrite 61 northeast trending sheeted 61 #.#Mt grading [002] 61 # KBDD# 61 intersected sulphide 61 Au Ag mineralization 61 sulphidized 61 holes intersected anomalous 61 Pb Zn 61 alaskite 61 -Adamske 61 quartz stockworks 61 Syenite 61 covellite 61 Hole IKD 61 Drilling Underway 61 holes DDH 61 infill diamond 61 meters BA# 61 cherty 61 Stepout 61 #.#/oz Ag [001] 61 ppb Ag 61 Gold Equivalent Ounces 61 advanced argillic 61 Rubidium Rb 61 LREO 61 stockworked 61 magmatic massive sulphides 61 Ambrex 61 Gd#O# 61 pyrite alteration 61 massive sulphides 61 sulphide breccia 61 garnet skarn 61 TRD# 61 pyrite chalcopyrite 61 #ppb [003] 61 f h 61 Gold Oxide Skarn 61 -Joel bro Benji 61 -semitransparent 61 CHRC# 61 mineralized breccia 61 #m@#.# ppm 61 epidote chlorite 61 quartz tourmaline veins 61 FREE Domains 61 stockwork veins 61 hornfelsed 61 felsic metavolcanics 61 alunite alteration 61 g t Moz 61 tonnes@#.# % [002] 61 Ag Cu Pb 61 VVGD 61 biotite altered 61 Hole ZFDDH# 61 Sb 61 antimony Sb 61 intersecting mineralization 61 Sechol Inicio 61 Hypogene 61 Nickel Ni 61 RC# intersected 61 Rare Earth Oxides TREO 61 Gold Equivalent AuEq 61 Cu Ni Pt Pd 61 anomalies coincident 61 Quartz Vein 61 grade mineralization intersected 61 Fe#O# 61 unmineralized 61 abundant quartz veining 61 Classification Tonnes 61 QAP DDH 61 -Keichi 61 Marta Este 61 -Ingres OpenROAD Code 61 chalcopyrite pyrrhotite 61 niobium Nb 61 HG Sulphide zone 61 altered volcanics 61 ppm Bi 61 argillic 61 Anomalous radioactivity 61 chlorite altered 61 ppm Rb 61 pyrrhotite pyrite chalcopyrite 61 NQ diamond 61 vein breccias 61 Calcite Hill 61 outcropping mineralization 61 dacite porphyry 61 ppm ppm ppm ppm 61 oxidized mineralization 61 phyllic altered