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Johns, G.W., McIlraith, S., and Muir, T.L. 2003. Precambrian geology compilation map—Sault Ste. Marie–Blind River sheet; Ontario Geological Survey, Map 2670, scale 1:250 000.

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MINERAL DEPOSIT INVENTORY a LEGENDab 85°09'38 15' 82°00'00  85°00'00 30' 20 bcd 90 45' 30' 83°00'00 45' 400000 m 10 PHANEROZOIC Commodity Mines, Quarries and Prospects 200000 m 10 20 15' 84°00'00 45' 30' 15' 70 80 90 47°00'00 47°00'00 Cu Cu 30 40 50 60 30 40 50 60  70 80 90 300000 m 20 JASPER TP. ALTON TP.  26a 26a . PALEOZOIC 18 Quirke Lake Group 26a 6c 2 b 2 9 9 30d PARROT TP. COMOX TP Labitiche 2 26b 26a 23 XN Tilley  2 2 McILVEEN TP.  Nb,U ARTEL TP. 3a NUTTALL TP. BAN TP. (PM = Producing Mine; MR = Mine with Reserves; MO = Mine without Reserves; 51XN 26b 49 2 3 WEGEZHIC TP. 30c M 2 RNINGSTAR TP. DUR Lake Ontario Geological Survey Lake Fe NAH Amy Nb  . MO 26c 26b ALMER TP. BRULE TP. LON TP. MEEN TP Serpent Formation: quartz-feldspar sandstone, DR = Developed Prospect with Reserves; DO = Prospect without Reserves; N TP. P WISHART TP. DAB Ward PINE TP. E TP. MAECK TP. SILURIAN 18a Au ± (Ag ± Cu ± Mo ± Zn ± Bi ± Fe ± W) 10 RYA GRENOBLE TP. LUNKIE TP. Lake Lake McNI 30d DEL sandstone with minor siltstone, calcareous PR = Prospect) 26a Abinette 26c aymo 9 VILLANO TP. siltstone and conglomerate 6c S 30c bry Red Elk UPPER SILURIAN MAP 2670 Ag ± (Co ± Ni ± Cu ± Zn ± Au ± W) 26b 2 r Au 13 23b 5200000 m ve Ogidaki Horseshoe Lake s 9 Lake Ri Laughing 23b Fall Espanola Formation: limestone, dolostone, Co ± (Ag ± Ni ± Cu) FISHER TP. TILLEY TP. a Lake Lake 23a U 23a 18b COMMODITY 26a ay an 13 Lake  Provincial siltstone, sandstone e Pancake B aw Fe Saddle sissagi 36 Limestone, dolostone, shale, sandstone, gypsum, salt k Mis a h L k  Par Cu ± (Au ± Zn ± Ag ± Co ± Ni ± Pb) atc 28f Lake PRECAMBRIAN GEOLOGY MAP #. NAME STATUS PRIMARY SECONDARY Provincial B . r ROOT TP. r AVIS TP. 36a Kenogami River Formation Bruce Formation: conglomerate with minor MARNE TP e 13 Rive 18c v RENWICK TP. Jeanne Mozhabong Fe ± (Mn ± Ti ± P) Park 31 ARCHIBALD TP. LA VERENDRYE TP. i REILLY TP. Provincial E TP. sandstone and siltstone 1. Jarvis Lake Deposit PM Zn,Pb,STMS Ag,Cu Batchawana R OLLINS TP. 9 P. BEEB COMPILATION SERIES chigan is R ON TP. ASSEF T Lake Lake HERRICK TP. ial A la Mashagama RUST Park 28f Mo ± (Li ± Cu) 2. Ontario Traprock PM Sttr Provinc u MENARD TP. MIDDLE AND LOWER SILURIAN Cu Lake o Lake Wrench SCRIVENER TP. Bark 3. Root River Sandstone Quarry PM ss Park G HYNES TP. LAMMING TP. U N TP. Dumbell Lidstone Mn badjiwan   Rocky Lake SHULMA Lake 23b 4. Bilton Option MR Cu O Lake Lake 17 Hough Lake Group IR 15E Island ASSAD TP. 35 Limestone, Dolostone SAULT STE. MARIE– Nb ± (Th ± REE ± Ta ± U) 5. Bruce Mines–Taylor Section MR Cu Ag Ranger ROYAL TP. Lake 35a Ekwan River Formation 6. Cheney Mine MR Cu 31 12 Lake Boumage Mississagi Formation: quartz-feldspar sandstone, Ni ± (Cu ± PGE ± Cr ± Au ± Asbe) 5200000 m 13 Dusty 17a 7. Bi-Ore Mine MR Cu #f burn Lake argillite and conglomerate BLIND RIVER SHEET Cu U pike Mew WISEMAN TP. 8. Cascade Mine MR Ag,Cu,Zn,Pb Au Wolfe   Ranger Lake S 28f GERVAIS TP. Lake Pb ± (Zn ± Cu ± Au)  Lake Aubrey Lake y 90 ORDOVICIAN 9. Copper Prince MR Cu Au,Ag Lake  Prugh Cu  Zn  Daystar Nav Pecors Formation: siltstone, argillite, wacke, minor Cu  2 Pb Lake e Lake 17b Pt ± (Pd ± Os ± Re ± Rh ± Ru ± Ni ± Cu) 10. Hermina MR Cu D TP. Lake Fe o Lak sandstone U HAVILLAN TUPPER TP. M 13 . UPPER ORDOVICIAN 11. Jardun Mine—No.3 Zone MR Ag,Cu,Zn,Pb Au TP. YAREMKO TP. FOUCAULT TP irport U ± (Th ± Y ± Nb ± REE ± Cu ± Au) n or OLLINEAU TP. TIMBRELL N TP. A i b,c J RTO Ramsay Lake Formation: conglomerate, minor r 26 TP. WO e EUVE up VILLEN S c 12. Kristina Mine MR Cu 26b, 9 2 ke 17c Scale 1:250 000 i Cu 9 Cu OW TP. La HOTTE TP. SN WINKLER TP. sandstone, siltstone W (tungsten) 13. Lacnor Mine MR U t Mn  31 31 Tupper    2 13 28f Dubbelewe 34 Clastic and Carbonate Sedimentary Rocks e 2 Zn Pb FABBRO TP. e 5000 m 0 5 10 km 14. Nordic Mine MR U Th,Y SHIELDS TP.  Penelope Lake FONTAINE TP. 1 Aweres Formation : conglomerate, arkose, d . 34a Georgian Bay Formation: dolostone, dolomitic limestone Zn ± (Cu ± Pb ± Au ± Ag ± Ni) Lake GAUDETTE TP 23a Kindiogami Lake 17d 15. Prace Mine MR Pb, Zn, Ag 3d 9 TP. Ag,Cu,Zn,Pb,Bi Lake RDLE TP. Flag Lac 31 2 8 2 Cu HUGHES WA 34b Blue Mountain Formation: shale, siltstone quartzite S 5 Mo Lake es Industrial Minerals (silica, trap rock, kaolinite, clay, peat); 16. Spanish American Mine MR U 10  TP. aux Sabl 34c Collingwood Member (of Lindsay Formation): organic C  DAUMONT 129 Building Stone (sandstone, granite, gabbro) 17. Bar River MO Silica t 8 19c  (! a 5 U carbon-rich argillaceous limestone a 19d 2 Cu  NTS References: 41 J, K 18. Bellevue Quarry MO Silica t Cu f n   Mo Cu 28 90 e EY TP. 2 Cu Portelance Shoepack Poupore Russian 16 Elliot Lake Group and Equivalents 19. Breitung MO Fe L 3  2 Lake s a 19c 28f Lake ake Lake OSHELL TP. 20. Bruce Mines–Bruce Section MO Cu Ag nt 9 L MIDDLE AND UPPER ORDOVICIAN © Queen's Printer for Ontario, 2003. d Cu Skinte Toosee River o Ag 19d OLINYK TP. 21. Bruce Mines–Copper Bay Section MO Cu Ag 3  hmont Lake 80 McKim Formation: siltstone, wacke, argillite a 8 223d  2 Searc Lake Lake 16a f Fe Devil's OUX TP. P. This map is published with the permission of the Director, Ontario 22. Bruce Mines–Wellington Section MO Cu Ag   23d  RI . LANDRIAULT T ARS TP. 2 g  Lake SIMONS TP  Geological Survey. A K Pb 19d 15 RP TP. 33 Limestone, Dolostone and Shale 23. Buckles Mine MO U Cu 3 8 X . Garden T TP. 9 THO U 3 N DEROCHE TP Zn,Pb SLIEVER TP. 13 Matinenda Formation: quartz-feldspar sandstone, e 19c 18a,b CUTHBERTSON TP. Toodee VANCE LEFEBVRE TP. Surveyor 45' 24. Can-Met Mine MO U 45' m #f 3 mour Lake Moccasin 16b Status 19c,d 6 556 Lake RGEON TP. Sey Lake conglomerate, sandstone 25. Croker Island Quarry MO g TP. Goulais River (! STU Lake VANKOUGHNET Pb U Lake Location This project is part of the three-year 26. Denison Mine MO U REE,Nd,Th,Ce,Y e FENWICK TP.    Pointer Lake Toobee TWEEDLE TP. Thessalon Formation: mafic, intermediate and Mine/Quarry Prospect Occurrence r Cu Zn 13 IME TP. 16c Operation Treasure Hunt geoscience program 27. Glagoma MO Cu Ag,Zn HODGINS TP. RLBURT TP. Lake 28f MONEST CAMBRIAN i U Cu Fe CURTIS TP. HU Lake felsic metavolcanic rocks, intercalated initiated by the Ontario Government. c Ag,Zn,Pb Izaak Lake 28. Goulding Mine MO Cu   13 a 31  P. 9 metasedimentary and epiclastic rocks 29. Grand Portage MO Cu  WHITMAN T  e Pb 19d 2 9 32 Munising Formation: quartz sandstone, dark green shale, 30. Havilah MO Au Ag,Cu ST F 19d Livingstone Creek Formation: quartz-feldspar Goulais Bay 31  19c SAGARD TP.  28f siltstone and conglomerate 16d 31. Hermenia Mine, No.3 Shaft MO Cu 52 FeXN18 23d 2 Cu 2 19d Cu 9 sandstone, conglomerate and wacke 80 IR 15A 13 32. Jardun Mine—No.4 Zone MO Ag,Cu,Zn,Pb Au 13 19XN  5 2 90° 82° 19d 9 DEN TP. UNCONFORMITY 92° 88° 86° 84° e  Barr 2 Spinweb RED Lake 33. Jury MO Cu 16c Pb is XN47 9 19c 5 VIEL TP. 9 70 Deposit Types 31 Jarv 19d Horner Lake Lake Tip Top Seul 34. Massey MO Cu Au,Ag u Pb Lake Cu,Zn Robb  P. 9 Sioux Lake P. C W c PICHE T c UNCONFORMITY Nipigon AWERES T  Cu Lake 19c 19 19d 9 19d 2 19d Lake urd Lookout 35. Massey Mine, No.4 Shaft MO Cu   3 TP. U Rawhide 2 E TP. B 28f PRECAMBRIAN 50° 50°   Pb Cu Cu  1 Lake 2 DAGLE . Cu  Kirkpatrick U PLOURD Mafic to Ultramafic Volcanic/Intrusion Associated 36. Milliken Lake MO U Cu  WAGG TP   U  Lake U,Th Lake Beardmore Fe  JARVIS TP. ELSEY TP. 10 19d Lake 9 19c 19c U,Th 15 Mafic and Ultramafic Intrusive Rocks 37. Moosehorn Mine MO Cu Au,Ag 17 Ag ANDERSON TP. CH 9 Cu  !( Pb 2 OULIN TP. 19d 8f PROTEROZOIC Map 2667 Map 2668 Vein/Replacement Deposits  2a ,Pb  P U  2 15a Gabbro, anorthosite 38. Old Quirke MO U REE,Th KANE TP. Cu Tenfish   19c  7d 16d 13 9a  19c ake U (East Bull Lake Intrusive Suite; 2470 to 2490 Ma) 49° 49° Unclassified 39. Old Stobie MO Fe PENNEFATHER TP. 1 2 19d  L U,Th . awanson  32XN8 GILLMOR TP. 19c Th  19c PRESCOTT TP Mad MESOPROTEROZOIC (0.9 TO 1.6 Ga) 40. Panel Mine MO U Th Cu XN 19d U, U,Th ke Thunder Bay Marathon Cu Trout Fe 0 2 LECARON TP.  Cu,U La Map 2 ins 10 Two Camp 1 U  19c UNCONFORMITY 663 Timm  13 9 23d Map Map 2665 Map 2666 41. Pater MO Cu Au,Ag X  2 19b JACOBSVILLE FORMATION (<1086 Ma) 2664  9 Lake NXN Primeau Lake 23b R TP. 10 #f 19c 11 46 KEHOE TP. d SAYE Cu 7 13 42. Pronto MO U 9 Cu DUNCAN TP. 2d Lake 23 48° 48°   16d 13 19c 23d 23d 2  rk Upper f 43. Quirke No.2 MO U Th Pb a,b Carpenter SHINGWAUKONCE TP. 19b RALMBAULT TP. Mississagi Provincial Pa awa

70 Cu Cu  16c Cu 2 23d 23d 19d 19d 23d Archambeau Klondyke ARCHEAN W

44. Stanleigh Mine MO U DENNIS TP.  19d 23d 10 9 23d 31 Sandstone, Shale, Conglomerate L A K E S U PE R

 3 16d 17a ake Frobel 10 9 23d ; 8 Lake Lake IO Map 2669

Cu 16c 5 19d L  23b 10 23d 2 10 19b 10 R

45. Stanrock Mine MO U Th,Y 3b Cu Bijou Lake 10 19c  0 9a 19b ; 2  CHELSEY Cu 1 Cu 8 1 23d u 60 NEOARCHEAN (2.5 TO 2.9 Ga) 47°

2 16c 23d 19c Cu 19a u  19c ; 8 C . 47° Classification Example 46. Victoria Mine MO Ag,Zn,Pb Au,Cu 16d STMS DITIONAL HON TP. Lake CASSON TP. 23d Cu C Flack 8 HUGHSON TP

13  AD McMA 10 19d 23d 23d  19b  23d STRAIN TP. Sault Ste. c 17a Cu  9d 23d 19b 19a 3,2 23d U UNCONFORMITY Sudbury 47. Williams Mine MO Fe 16  19d TP. ; 1 b Alkalic Intrusive Suite (2650 to 2700 Ma)

13 Cu 19d Lake 19c 19a U 19 Lake PONCET TP. Lower Marie diamond symbol = vein/replacement 48. Abbican Mine DR Cu Au,Ag PRINCE TP. 7 17d 18c 19c  19d Bi Caribou 10 Cu  19b U 19a TEASDALE TP. ondyke U Map 2670 ; l

23d 17a Cu19d  Y TP. 9c  17a 19b 19d K .S.A. Cu 18c 19d Cu 13  omata 17a VARLE 10 1 23d  3 23d 23d 23d Lake 30 Carbonatite

49. Batchawana DR Fe 16d  19d 3d Cu 16b Wak 9 19c 18b ; 23d 9 3d 46° 46° 1 green colour = zinc 3 17d a 2 Cu 19c 19d  Cu 10 9 17a  18c ; 19d 5a 2 MOSES TP.  17 3 ; FF TP. 

50. Campbell-Dukes DR Cu nce 2 X Rankin 17d Echo 1 Cu MORIN TP. 23d Cu 18b 2 2 13  U 5 3b ; 9 HEMBRU 5 Fe 30a Rauhaugite: contains dominantly ferruginous dolomite 14 Diorite-Nepheline Syenite

Pri 1 N 18c 18b   Cu  2  U Cu 8a 2 : 18b 9d 28 18c 18b 1 8 5 : Bell

1 18b a 18c 8 17a  3b,2 3d 2,3 2 Lake

51. Coppermine Pt. DR Kaolinite Lake Location 19d 18b Lake 17a 23d Cu,Co 6b  19c ; 18 Fe 2 3b : 30b Sövite: contains dominantly calcic carbonate minerals 14a Syenite: nepheline bearing

; Ni 18b,c 19d 19c   1 17c OTTER TP.  Lake 18a Pb 10 IF

1 = Jarvis Lake Deposit 52. Goulais River DR Peat IR 15D 19d 18b   Cu Cu  Cu U 19d u Cu 18c Cu 3d 18a 23d  2 9 5a 30c Ijolite 18c Cu,Zn,Pb  C ; ; 18b  2 18c 19d 3b 23d 9 14b Syenite: includes monzonite, diorite, pyroxenite; locally Ag, Cu Cu ; 23d18b 5 45° 26b 18c   Cu  16b   ; NICHOLS TP. U 2 23d 30d Fenite 45° 53. Millaqua DR U  818b ;  Cu 16b 17c Fe 19d ALBANEL TP.  16c 13 13 3b 13a quartz bearing Pb 23d  Cu P.  19c  17a U 23d 10 10 92° 90° 88° 86° 84° 82° 54. Principle Strategic Minerals Prospect DR Cu Ag Cu Sault Ste. Marie Pb 18b Cu,Co 19c 17c 16b JACKSON T Cu MANDAMIN TP.  iver IR 14 17a Cu Cu d U  Cu 19c 23d 2 31 Garden R Cu  17c  u 23 17a 19d 16b ; ;  c 23d 28f Location Map 1 cm equals 100 km 55. Steinberg DR Cu 23d 23d    C U 16 ALKALIC INTRUSIVE COMPLEX (1108 to 1109 Ma) 60 26b  19c 17c 10 NEO- TO MESOARCHEAN (2.5 to 3.4 Ga) 56. Sudbury Contact DR Cu d 18b Cu 19d Cu ASETT TP. 19d  38 23d 19c 19d 23 Cu,Fe 23d 19d GR Cu CK TP. 43 3 57. Crownbridge DO Cu  17a   19d ; U U BOU 23d 17c BUCKLES TP. 15 19c Bass Cu 28f Cu U  XN 58. Hotham Island Trap Rock DO STTR 16c 23d 19c  #f9 18c 17c 9 30' 29 Alkalic Intrusive and Associated Mafic Rocks 13 Granite-Granodiorite: massive to foliated texture; locally 30' Lake 17a 17a GOULD TP. NOUVEL TP. XN d WEEKS TP. 6 P. e 19 17a Quirke 59. Massey–Tintina DO Cu,Silica Ni,S 23d U #f Cu KAMICHISITIT T Lower Mac 18a U  X 15a 29a Mafic volcanic and hypabyssal rocks porphyritic (phenocrysts include quartz, feldspar, biotite, SYMBOLS EDITH   19d er e N40 Lake 17a AN TP. 60. Master DO Cu MACDONALD, MER Au,Cu  Cu v 57 Lak 19d X26 62 LEHM 29b Gabbro (diabase) RDEEN TP.  23d Cumming's 23d Ri #f 19c N  24 and amphibole minerals); quartz diorite, diorite in some AND ABE Lonely GALBRAITH TP. 17a Axe ite 67 18a U XN 61. Bald Dome PR Cu Lake 19c Cu ,Pb ake Wh #f  Dunlop Lake 23d 29c Alkalic gabbro

 23d Ag,Cu Lake L  le JOGUES TP. 19c 3d U 18c X 18c plutons or plutonic complexes Geological boundary Major highway 19c Fe Cu itt Cu 19d ; 2 N 

62. Conecho PR U Fe,Silica  L #f 1X6N U18c Cu 2 9 LOCKEYER TP. 28f 23d 9 29d Amphibole syenite: includes pyroxene-bearing phases 13a Potassium-feldspar megacrystic granite, quartz monzonite 19c  19d 17a  23d  XN45 23d 23d 9 8 U 63. Eagle Copper Mine PR Cu Ag,Au,Pb  Tunnel 19d Cu  48 U 23d ; 18a  Cu,Pb 23d 29e Nepheline syenite: locally contains quartz 30XN 17a ke Cu U    13b Granodiorite-monzodiorite: hornblende and biotite bearing

64. Little White River PR Cu Silica 638 Au La 28f U  17a 29f Nepheline monzonite

23d 19c(! N TP. 17a ON TP. 23d 19d BEANGE TP. ; 13c Pegmatite, aplite, foliated granite Fault and deformation Secondary road 65. Pardee Zone PR U  19b ABERDEE Cu HAUGHT 23d 18c 18c 19d U U 19d 29g Ijolite Fe   17a 8 Cu,Pb 2 SHIBANANING 13d Diorite zone 66. R. Paynter PR Cu 19b d  17b ke 17a 31 19c 19c 20 8 19c 19a Cu Cu 23  Cu Au  FolsonLa 15a 23d TP. Fe 18ab 9#f U 18c 23d U 23d  67. Sheba PR Cu U 19b XN39 2 546  ANS TP. 19d Cu Cu  Ni,Cu,PGE Ni,Cu Savage (! U TIMMERM  U  Pt,Pd d Sanukitoid Intrusive Suite (2680 to 2700 Ma) Synform with inclined Railway 68. Twin Lake PR Cu 50 XN 8  18c 108 19d 18a 18a ; 18c  23d   Lake 28 Mafic and Related Intrusive Rocks (Keweenawan Age) 19c 238d 19c 23d u  #f60 U,Th 17a (! 19d ; Au,Cu ; LAIRD TP. PARKINSON TP. C  U 23b 15 3 ! @ axial plane

19c Fe 19a 19c Cu Williamson Lake Big Moon  BOLGER TP.   U 18c Cu; 2  28a Gabbro (diabase): sills and associated dikes; minor

19c Rock  19d Cu 19d  liff 17a Lake U U U Zn   2 40 19b 8 19b 19b Cu  Wharnc 8 56#f U 17a 44  Ni,Cu, anorthosite and granophyre, locally composite, reverse 12 Diorite-Monzonite-Granodiorite 23d 8   Cu  U 18c UBIN TP. 2 ; Township boundary a 8 Lake  Matinenda 17b 23d JO 18a 23d 9 PGM magnetic polarity (Nipigon sills, 1109 Ma) Major fold (syncline) The Mineral Deposit Inventory on this map is derived from the MDI2 database maintained by the Ontario Ministry of Northen Development and Mines. Cu  Cu 554 23d Cu Lake U   17a  XN U 18c 2 2b 12a Monzonite-granodiorite Desbarats (!  U U  23d 17a 17a  1 BOON TP. Information on this map reflects updates to the database as of September 2002. This map contains deposits designated in MDI2 as “Producing Mine”, 19b 3d 19c Y TP.  17a 23d 3 8 15a 28b Gabbroic to granophyric intrusive rocks: dikes; ;

Lake 2 19d  MONTGOMER 23d  17b   17a XN  U 12b Granodiorite: minor monzonite, syenite and diorite

“Past Producing Mine with Reserves”, “Past Producing Mine without Reserves”, “Prospect without Reserves”, “Developed Prospect with Reserves”, and 8 Ottertail Cu 23d U U U 36 U U 3 17b 23a ultramafic, gabbroic, leucocratic, pegmatoidal and Cu 19c8 BRIDGLAND TP. 23d 8 8 Cu  U U XN13 U 53 U 5 U 16c 2 8 9 12c Diorite: includes associated syenite and monzonite Provincal park “Occurrences”. Deposits containing a status of “Discretionary Occurrences”, according to MDI2, are not shown on this map. U 17b Lake 19c  Cu    16b 17b liot Lake 65   U 28f granophyric intrusions (St. Ignace Island intrusion) Major fold (anticline)  19d 64 8  17a U 16b El 7b 14 16c 2 16b  GAIASHK TP. b 19c  U 19b U,Th 23d U U,Th U 1 XN XN3 3  2 Colours indicate commodity at mine, quarry, prospect or occurrence.  23d Cu #f 17a    U XN23 5 2 U GEROW TP. 28c Gabbro (diabase): dikes; olivine bearing; normal 8

19c Co   Cu  JUILLETTE TP. U 17b 17b XN ! 2 Ni,Cu 23d 3 8

c  129 19d 9 2 2 Fe 3 magnetic polarity (Pukaskwa dike swarm) Abbreviations used for commodity. Fe Cu 23d ER ROSE TP. 8 18c  18c  U 5a @ Peraluminous (S-Type) Intrusive Suite Indian Reserve Cu PLUMM Cu 66 (! 19d  U  UNTERMAN TP. Iron formation d JOHNSON TP.  #f 8  U 17b G 2 28d Gabbro (diabase): dikes (Abitibi dike swarm, 1141 Ma) IF Gemstone and industrial material occurrences are written in full. Cu Fe Cu ADDITIONAL WELLS TP. U 16b Cu 3 3 IF e  Cu  #f61 18c 18c 23d 9 2 3 3 28e Felsic to intermediate intrusive rocks Size of “Deposit Type” symbol indicates status.   23d Cu  TP. Cu 17c 16b Fe 2 2 2  28f UTT TP. Cu 19c 50   5 28f Diabase: dikes; olivine bearing (Sudbury swarm, 1238 Ma) 11 Granite-Granodiorite: muscovite- and bioite-bearing TARB  Cu 8 23a STGB International border 40 #f #f55 Cu,U  19d 8 8 9 3 17a 23a granitic intrusions Regional stratigraphic 19c  8 5a 0 AGLE TP. r 19d 18c Chiblow 1 a DE e younging direction 3 : TP. Cu  2 9 U  THESSALON DSTONE TP. 9 rout v 19c 3d GLA Lake 9 23d ESTEN TP. 23a Big T SON TP. i a 2 Cu TP. 28f 16b 9 23d TENNY R (indicated by volcanic XN MUNICIPALITY 19c PATTON Lake 30 LITHOLOGICAL RELIABILITY DIAGRAM h 27 Foliated to Gneissic Intrusive Suite 1 y s Felsic Intrusive Rocks: quartz-feldspar porphyry dikes 19c 23d 19d 19b CK TP. 8 McCarth i GH TP. lava flow; by 18c  23d 16b MA n GOU 23d 18a Cu od 23d ake Horseshoe a sedimentary feature) 8 23d 18c a 23d Basswo 19d  L p 19c Silica Cu 17 17a Marshland Lake S 32 21 Cu,U  23d Lake 23d Cu 23d PROCTOR TP. CADEAU TP. e INTRUSIVE CONTACT 10 Foliated Tonalite Suite: locally massive or gneissic; 23d #  a 19d . Lake h f 17 P T ds  19c 19d8 5 2 16b Cu 17a SCARFE T Ag,Cu #f Richar 19d #f XN 17a 16c  Emerald 16a 9 23d biotite bearing, amphibole bearing; locally leucotonalite, Landing 32 2 #f 23d Cu 54 19d  ake  16b 23d Osler Group: Mamainse Point Formation,  2 #f #f  18c L  68 9 granodiorite, quartz diorite, monzogranite, or quartz ilica 8 17a 16b 9 #f Cu 23d S  20 Cu 33 23d 15 Michipicoten Island Formation (1086 to 1108 Ma) 18c Cu 19d 4#f #f 17a U 17c 9 McGIVERIN TP. 16c monzonite U 23d 27  13 Cu 16c  17a 16d 17 Bright Iron Bridge SPANISH RIVER TP. 16b ABBREVIATIONS 33 Bruce Mines !( IRON BRIDGE 23d  Lake Cu MUNICIPALITY 23d #f JOSEPH TP. 19d TP.  16b  16b 26 Volcanic and Sedimentary Rocks Ag ...... silver ST. 19d 17a Turtle Kecil Lake 15 Cu 23d 8 17c 18c 23d 23d 31 16c 59 15' 26a Rhyolite: porphyritic; minor trachyte and quartz-latite; Asbe ...... asbestos

16c M 19d 16b Lake EDDEN TP. #f 16c 16c 9 Gneissic Tonalite Suite: locally contains associated foliated 15' 18a 17a Thessalon IR 12 is d River 28 Cu SH 16a 15 17b 34 16a also minor associated felsic intrusive rocks Au...... gold

9 sis Blin #f 16b 16b 15 2d 10 or lineated biotite- and/or amphibole-bearing tonalite

8 sa TP.  17a 15

g COBDEN 16b Hastie U #f #f#f 17b 8 26b Basalt: subaerial flows and volcaniclastic rocks; Bi ...... bismuth

8 23d i R 16a 9 16b 16a16b ,Th 35 20 9a Gneissic tonalite with abundant enclaves of migmatized

a U 8

33 THESSALON TP. Dean Lake iv 37 Lake 17 19d  17a 17a 23d tholeiitic composition; minor associated mafic intrusive Ce...... cerium e 8f 8

r #f Mississagi 17c 2 16a 16b 8 Chutes Provincial supracrustal rocks

23d 9d ; Co...... cobalt U 1 8 3d rocks 8c 8 d 2

HILTON TP. 1 17a U 0 8c 23d 19 8 Park River d 8 2 1 23 8

 16b 23d 17a 18b 8 23d

A 23d 16b  23d Cu 23d 16a 8 Massey 26c Conglomerate: minor sandstone Cr ...... chromium S ; c IR 8 Lauzon Lake  U 8 4

3 23d 19d STRIKER TP. 42 16b 20 Mafic Intrusive Suite Cu ...... copper Cu 16b d  ; 23 UNCONFORMITY St. Joseph LEY TP. 9 XN #f 3d 17b Fe...... iron E 16a 2 16a 17c HOMPSON TP. 17a U 41 16a 20 17b 17c

T 23d 16b 19d 20 Spanish 23d 17a Ga...... gallium Island RIGHT 23d  17b Sibley Group (~1340 Ma) 8 Gabbro: dikes; locally subordinate diorite, anorthositic

DAY and B  6a 23d 17c 23d Li...... lithium

33 9 1 20 Serpent River 23d 6a Ni,Cu,Co gabbro, and anorthosite 8 1 17c

ADDITIONAL TP. 16a 23d 16a 17a  Mn...... manganese Fe,U I.R.7 20 17a 23d 17a 8a Gabbro: pervasively serpentinized 20 8 16a 8c 17b YN TP. 16a 17b 9d 28f 7b 1 17b 25 Clastic and Carbonate Sedimentary Rocks: red and white Mo...... molybdenum JOCEL 17a 1 23d 1 18a 17b 23d Blind 17a 18c 20 17a 23d 23d sandstone, red shale; calcareous shale and mudstone; local Nb...... niobium River ; 18a 19d 17b 17a

20 33 17b 23d 8 18b 17a 18a 18c dolostone and limestone 7 Ultramafic Plutonic Rocks: dikes; peridotite, pyroxenite, Nd...... neodymium

34b 23d 17b 19c 19d 17b 23d 23d ; 3d 19d Ni ...... nickel 8 2 16b 28 17a8 ; 19d 18b hornblendite, and dunite; locally altered (talc, serpentine, 17a BLIND RIVER 17a 17a ;  10 Os...... osmium 17a 18b 17a 19b 19c U,Ga Felsic Intrusive Rocks carbonate) 23d 17a 19c 19c 23d P...... phosphorus 17a 17b 17a iver 33 23d 17a 17a XN 19d Spanish R 28f Au,C8u  58 b INTRUSIVE CONTACT Pb...... lead 33 23d a 18b 23d 18b IR 5 19 24 Croker Island Complex (1590 Ma): granite, syenite, diorite, 33 20 23d 28 18 ; Pt ...... platinum 23d8 24 gabbro Timiskaming-Type Supracrustal Rocks (2689 to 2692 Ma) Pd...... palladium 19c b 17a 18a 18a 19 PGE ...... platinum group element ORTH SHORE TP. MUNICIPALITY 33 THE N 9d PGM...... platinum group metals 18b 17a 1 17a 6 Coarse Clastic Sedimentary Rocks: includes associated 24 17a PALEOPROTEROZOIC (1.6 TO 2.5 Ga) Re ...... rhenium 24 subaerial alkalic volcanic rocks La Cloche REE...... rare earth elements 34a 33 33 d 6a Conglomerate: coarse grained; polymictic; locally lithic Rh...... rhodium rovincial Park 23 Gabbro (diabase) : dikes and dike swarms 5110000 m XN25 P arenite, arkose, wacke; minor siltstone and mudstone Ru...... ruthenium 23a Matachewan–Hearst swarm (2450 Ma) 6b Alkalic volcanic rocks: flows, tuff breccia, and lapilli-tuff; 33 33 S...... sulphur 5100000 m 23b Marathon swarm: includes dikes correlated to the mainly alkalic basalt and basalt-andesite (shosonite); STGB ...... gabbro 19c 33 Preissac dike swarm (2150 Ma) lesser latite; minor related intrusions g ...... granite 17a 23c Biscotasing swarm (2167 Ma) STMS ...... miscellaneous stone UNCONFORMITY 33 23d Nipissing sills (2219 Ma): diabase sills, dikes and ss...... sandstone 33 related granophyre STTR...... trap rock MAP REFERENCES 33 23e North Channel swarm Keewatin-Type Supracrustal Rocks Ta ...... tantalum 33 Ti...... titanium 1. Bennett, G. 1982. Geology of the Two Horse Lake area, District of 21. Robertson, J.A. 1962. Geology of townships 137 and 138, District of 46°00'00 UNCONFORMITY 5 Mixed Clastic Sedimentary Rocks: wacke-dominated, Th...... thorium Algoma; Ontario Geological Survey, Report 178, 79p. Algoma; Ontario Department of Mines, Geological Report 10, 94p. 46°00'00 10 20 U...... uranium 90 400000 m lesser conglomerate, mudstone and carbonate rocks; 200000 m 10 60 70 80 15' 82°00'00 Animikie Group (1600 to 2200 Ma) W...... tungsten 85°08'25 20 30 40 50 60 70 300000 m 10 20 30 40 50 30' includes associated paragneiss and migmatite 2. Bennett, G., Hillier, R.D., Nentwich, F., Pupus, C.P. and Pucovsky, M. 22. Robertson, J.A. 1963. Geology of townships 155, 156, 161, 162, 85°00'00 45' 80 90 45' Y...... yttrium 30' 15' 84°00'00 45' 30' 15' 83°00'00 5a Wacke: (argillite) minor siltstone and polymictic 1975. Jarvis Lake–Garden River area, District of Algoma; Ontario and parts of 167 and 168, District of Algoma; Ontario Department of Zn...... zinc Division of Mines, Preliminary Map P.1064, scale 1: 15 840. Mines, Geological Report 13, 88p. 22 Mudstone: black shale (argillite), siltstone, greywacke; conglomerate, arkose minor limestone (Rove Formation) 5b Conglomerate: polymictic; locally derived 3. Bennett, G., Sawitzsky, E. and Whittaker, P. 1976. Jarvis Lake– 23. Robertson, J.A. 1963. Geology of the Iron Bridge area, District of 5c Migmatite: biotite-quartz-feldspar paragneiss Garden River area, District of Algoma; Ontario Division of Mines, Algoma; Ontario Department of Mines, Geological Report 17, 69p. 5d 21 Mudstone: shale, conglomerate, carbonate, iron formation Slate: schistose texture; locally graphitic; locally Preliminary Map P.1189, scale 1:15 840. contains chert 24. Robertson, J.A. 1964. Geology of Scarfe, Mack, Cobden and Striker (Gunflint Formation) SOURCES OF INFORMATION 4. Bennett, G., Sawitzsky, E. and Whittaker, P. 1976. Jarvis Lake– townships, District of Algoma; Ontario Department of Mines, Geological 21a Mudstone (argillite): limestone, iron formation, basalt (Upper Gunflint Formation; 1878 Ma) Felsic Volcanic Rocks: massive flows; minor pyroclastic Garden River area, Duncan Township, District of Algoma; Ontario Report 20, 89p. 4 Base map information derived from the Ontario Basic Mapping rocks; dominantly rhyolite, locally dacite Division of Mines, Preliminary Map P.1190, scale 1:15 840. 21b Mudstone (argillite): limestone, iron formation, mafic tuff, Program, Surveys, Mapping and Remote Sensing Branch, Ontario 25. Robertson, J.A. 1968. Geology of Township 149 and Township 150, basal conglomerate (Lower Gunflint Formation) 4a Massive to foliated flows Ministry of Natural Resources, scale 1:20 000. 5. Bennett, G. and Sawiuk, M. 1979. Jarvis Lake–Garden River area District of Algoma; Ontario Department of Mines, Geological Report 57, Generalised Stratigraphic Section of the Huronian Supergroup b 4b Pyroclastic rocks; tuff and lapilli tuff, tuff breccia SHADED RELIEF TOTAL FIELD MAGNETIC SURVEY Cross Section through the Western Huronian Supergroup Schematic Cross Section Models through the Western Huronian Supergroup (Jackson 2001) Felsic Intrusive Rocks (southern part), District of Algoma; Ontario Geological Survey, 162p. 4c Epiclastic rocks Projection of map UTM Zone 16 using Datum NAD 27. Preliminary Map P.2241, scale 1:15 840. 20 Granite (Cutler Pluton; 1740 Ma) 4d Pervasively hydrothermally altered 26. Robertson, J.A. 1970. Geology of the Spragge area, District of 4e Porphyritic and aphyric intrusions (felsite) Geological information derived from bedrock geology maps listed on 6. Born, P. 1987. Geology of the Havilland–Goulais Bay area, District Algoma; Ontario Department of Mines, Geological Report 76, 109p. the “Lithological Reliability Diagram” shown elsewhere on this map. of Algoma; Ontario Geological Survey, Open File Report 5602, 114p. INTRUSIVE CONTACT Felsic and Intermediate Volcanic Rocks: unsubdivided 27. Robertson, J.A. 1976. Geology of the Massey area, districts of 3 Mineral deposit information derived from the Mineral Deposit Inventory 7. Byron, M., Whitehead, R.E. and Davis, J.F. 1994. Lithogeochemical Algoma, Manitoulin and Sudbury; Ontario Division of Mines, Geological HURONIAN SUPERGROUP (2200 Ma to 2450 Ma) rhyolite, dacite, and andesite (MDI2) maintained by the Ontario Geological Survey, Resident and geological compilation of the Archean rocks of the Whiskey Lake Report 136, 130p. 3a Flows Geologists Section. Current to September 2002. greenstone belt, Algoma District, Ontario: applications to reconnaissance 3b Tuff and lapilli tuff 19 Cobalt Group mineral exploration; Ontario Geological Survey, Open File Report 5902, 28. Robertson, J.A. 1977. Geology of the Cutler area, District of Algoma; 3c Epiclastic rocks Geophysical interpretation of some lithological units derived from 87p. Ontario Division of Mines, Geological Report 147, 73p. Bar River Formation: quartz sandstone, hematitic Government of Ontario airborne surveys: 19a siltstone, sandstone Mafic Volcanic Rocks: subaqueous flows and minor 8. Chandler, F.W. 1973. Geology of McMahon and Morin townships, 29. Robertson, J.A. 1977. Geology of Nicholas and Raimbault townships, 2 Ontario Geological Survey 1999. Batchawana Bay area, Ontario District of Algoma; Ontario Division of Mines, Geological Report 112, 71p. District of Algoma; Ontario Division of Mines, Map 2347, scale 1:31 680. pyroclastic rocks; mainly basalt and locally andesite or dacite Gordon Lake Formation: siltstone, argillite, airborne magnetic and electromagnetic surveys, processed data and 19b 2a Massive to foliated flows sandstone derived products, Archean and Proterozoic “greenstone” belts; 9. Chandler, F.W. 1976. Geology of Saunders Lake area, District of 30. Robertson, J.A. 1977. Geology of Poulin and Sagard townships, 2b Pillowed flows Ontario Geological Survey, ERLIS Data Set 1034. Algoma; Ontario Division of Mines, Geological Report 155, 46p. District of Algoma; Ontario Division of Mines, Map 2346, scale 1:31 680. Lorrain Formation: quartz sandstone, minor 2c Volcaniclastic and epiclastic rocks 19c Schematic Legend a conglomerate, siltstone 2d Amphibolite; mafic schist and gneiss; locally Ontario Geological Survey 1999. Single master gravity and 10. Chubb, P.T., Hannila, K.K. and Peck, D.C. 1994. Precambrian geology, 31. Robertson, J.A., Siemiatkowska, K.M. and Cape, D.F. 1972. Geology garnetiferous aeromagnetic data for Ontario–GEOSOFT® format; Ontario Gowganda Formation: conglomerate, sandstone, East Bull Lake Gabbro-Anorthosite Intrusion; Ontario Geological Survey, of Harrow and adjacent islands, districts of Sudbury, Manitoulin and 19d Geological Survey, ERLIS Data Set 1036. siltstone, argillite Preliminary Map P.3274, scale 1:20 000. Algoma; Ontario Division of Mines, Preliminary Map P.793, scale 1:15 840. PROTEROZOIC 1 Ultramafic to Mafic Volcanic Rocks: komatiitic ultramafic Magnetic declination at the centre of the Sault Ste. Marie–Blind River 11. Grunsky, E.C. 1987. Precambrian geology of the Batchawana synoptic 32. Rogers, M.C. 1993. Geology of the Ompa Lake area, District of Huronian Supergroup flows and volcaniclastic rocks, minor ultramafic lapilli tuff, area approximately 7°47' W in 2002. project area, Mamainse Point–Pancake Bay sheet, District of Algoma; Sault Ste. Marie; Ontario Geological Survey, Open File Report 5864, tuff, and tuff breccia Ontario Geological Survey, Preliminary Map P.3062, scale 1: 50 000. 105p. 19 Cobalt Group a 12. Jackson, S.L. 1994. Geology of the Aberdeen area; Ontario Geological 33. Rogers, M.C. 1992. Geology of the Whiskey Lake area, east half; 19a Bar River Formation Interface model, showing considerable displacement at the basement cover. Part of this legend is common to other maps in the Precambrian CREDITS Survey, Open File Report 5903, 69p. Ontario Geological Survey, Open File Report 5834, 109p. Geology Compilation Series, maps 2663 to 2669. All units may not be 19b Gordon Lake Formation present on each map. 13. Jackson, S.L., Robertson, J.A., Henderson, I. and Siemiatkowska, 34. Russell, D.J. 1985. Paleozoic geology of St. Joseph Island, Algoma Location Map and General Geology b Lithologic units preceded by “G” are based on geophysical Compilation by G.W. Johns, S. McIlraith and T.L. Muir. K.M. 1994. Precambrian geology of May Township, District of Sudbury; District; Ontario Geological Survey, Preliminary Map P.2835, scale 19c Lorrain Formation interpretation. c Base map and geophysical compilation by J. Rudd and S. McIlraith. Ontario Geological Survey, Open File Map 233, scale 1:20 000. 1:50 000. Subdivisions of Precambrian geologic time are cited in terms of 19d Gowganda Formation billions of years (Ga). Ages of individual units, where known, are based Preliminary edits by M. Hailstone and M. Cosec. 14. Jackson, S.L. 2001. On the structural geology of the southern Province 35. Sage, R.P. 1988. Geology of carbonatite–alkalic rock complexes on precise geochronological data and are cited in terms of millions of 18 between Sault Ste. Marie and Espanola, Ontario; Ontario Geological in Ontario: Seabrook Lake Carbonatite Complex, District of Algoma; Quirke Lake Group years (Ma). Survey, Open File Report 5995, 55p. Ontario Geological Survey, Study 31, 45p. d Drafting by S. McIlraith. 17 Hough Lake Group For map legibility, not all dikes are represented on this map. e 15. Jensen, L.S. 1994. Geology of the Whiskey Lake greenstone belt 36. Siemiatkowska, K.M. 1977. Geology of the Wakomata Lake area, The Aweres Formation appears to be stratigraphically equivalent Cartographic production by S. MacLean and A. Evers. (west half), districts of Sault Ste. Marie and Sudbury; Ontario Geological District of Algoma; Ontario Division of Mines, Geological Report 151, 16 Elliot Lake Group to the Hough Lake Group. The basal portion appears to be equivalent Survey, Open File Report 5883, 101p. 57p. to the Ramsay Lake Formation, the upper portion equivalent to the Editing by M.A. Rutka. ARCHEAN Mississagi Formation. f 16. Ontario Geological Survey 1991. Bedrock geology of Ontario, east- 37. Siemiatkowska, K.M. 1978. Geology of the Endikai Lake area, Individual units of Archean age are defined by lithology. Every possible effort has been made to ensure the accuracy of the central sheet; Ontario Geological Survey, Map 2543, scale 1:1 000 000. District of Algoma; Ontario Geological Survey, Geological Report 178, 9 Gneissic Tonalite Suite Subdivision of units designated by a letter reflects lithologic variations information presented on this map; however, the Ontario Ministry of 79p. and does not imply specific age relationships. Northern Development and Mines does not assume liability for errors 17. Ontario Geological Survey 1992. Tectonic assemblages of Ontario, that may occur. Users should verify critical information. east-central sheet; Ontario Geological Survey, Map 2577, 38. Siemiatkowska, K.M., Guthrie, A.E. and Gent, M.R. 1981. Geology scale 1:1 000 000. of Sayer and LeCaron townships, District of Algoma; Ontario Geological Symbols Issued 2003. Survey, Map 2444, scale 1:31 680. 18. Ontario Geological Survey 1991. Bedrock geology of Ontario, Information from this publication may be quoted if credit is given. It is Lithologic contact southern sheet; Ontario Geological Survey, Map 2544, scale 1:1 000 000. 39. Thurston, P.C., Siragusa, G.M. and Sage, R.P. 1977. Geology of recommended that reference to this map be made in the following form: the Chapleau area, districts of Algoma, Sudbury and Cochrane; Ontario Fault 19. Ontario Geological Survey 1992. Tectonic assemblages of Ontario, Division of Mines, Geological Report 157, 293p. and accompanying southern sheet; Ontario Geological Survey, Map 2578, scale 1:1 000 000. Map 2352, scale 1:250 000. Johns, G.W., McIlraith, S., and Muir, T.L. 2003. Bedrock geology compilation map—Sault Ste. Marie–Blind River sheet; Ontario 20. Robertson, J.A. 1961. Geology of townships 143 and 144, District 40. Wood, J. 1975. Geology of Rawhide Lake area, District of Algoma; Inverted growth-fault model. Geological Survey, Map 2670, scale 1:250 000. of Algoma; Ontario Department of Mines, Geological Report 4, 65p. Ontario Division of Mines, Geological Report 129, 67p. a Lithologic units in “Schematic Sections” correspond to main legend. b Modified from Bennett et al. 1991. The Huronian Supergroup and associated intrusive rocks; in Geology of Ontario, Special Volume 4, Part 1, p.549-591.