OGS GeoData Listing

Ministry of Energy and Mines


This dataset is currently a BETA version. It will be updated on a monthly basis. We encourage users to contact us with comments, requests and suggestions: Webmaster.ndm@ontario.ca.

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Data for MCOUAT LAKE AREA

3 Mineral Inventory points within 200 metres

OMI Number Status Name Primary Commodity Secondary Commodity
MDI52B13SW00007 Discretionary Occurrence Perch Lake Sulphur/Pyrite
MDI52B12NW00005 Occurrence Bill Lake Copper, Nickel Cobalt, Platinum, Palladium
MDI52B13SW00002 Discretionary Occurrence Milk Lake Soapstone

22 Assessment Files

Report Number Year Company Property Work Type
20000020584 2021-2021 Sigma Gold Corp Miranda Lake Property Compilation and Interpretation - Airborne Geophysics, Compilation and Interpretation - Geology
20000016968 2018-2018 Rio Tinto Exploration Canada Inc Bill Lake Project Airborne Electromagnetic
20000018699 2018-2018 Rio Tinto Exploration Canada Inc Bill Lake Property Assaying and Analyses, Geological Survey / Mapping, Rock Sampling
20000014382 2016-2016 Allan George Onchulenko, Peter Stafford Maarten Gehrels Claim #4276009 Prospecting By Licence Holder
20000006606 2011-2011 Blaine Robert Davidson, Jessica Lee Bjorkman, Karl Everett Bjorkman, Katarina Edith Bjorkman, Kenneth George Fenwick, Kinross Gold Corp, Michael W Manley, Osisko Hammond Reef Gold Ltd, Sparton Resources Inc Atikokan West & Hammond Reef Blocks Airborne Magnetometer
20000007092 2011-2011 Jessica Lee Bjorkman, Karl Everett Bjorkman, Katarina Edith Bjorkman, Osisko Hammond Reef Gold Ltd Atikokan West Property
20000000375 2004-2004 Redstar Gold Corp Sunshine Property Assaying and Analyses, Geological Survey / Mapping
52B13SW2003 2004-2004 Redstar Gold Corp Sunshine Property Assaying and Analyses, Geological Survey / Mapping
52B12NW2003 2001-2001 East West Resources Corp Stawson Property Induced Polarization, Magnetic / Magnetometer Survey, Open Cutting
52B12NW2001 2000-2000 East West Resources Corp Induced Polarization, Open Cutting
52B12NW2002 2000-2000 Stephen Stares Assaying and Analyses, Mechanical, Overburden Stripping
52F04NE9650 1990-1990 Mingold Resources Inc Quetico Project Bulk Sampling, Geochemical, Regional or Reconnaissance Ground Exploration
52B13SW0008 1989-1989 Blue Regal Resources Diamond Drilling, Electromagnetic Very Low Frequency, Geological Survey / Mapping, Induced Polarization, Magnetic / Magnetometer Survey, Resistivity
52B13SW0011 1989-1989 Blue Regal Resources Law-Spence Occ., Law-Spence Occ. Property Magnetic / Magnetometer Survey
52B13SW0012 1989-1989 Blue Regal Resources Law-Spence Occ., Law-Spence Occ. Property Geological Survey / Mapping
52B12NW0001 1988-1988 Blue Regal Resources Diamond Drilling
52B13SE0023 1988-1988 Societe Miniere Mimiska Airborne Electromagnetic Very Low Frequency, Airborne Gradiometer, Airborne Magnetometer
52C09NE0003 1988-1988 Blue Regal Resources Diamond Drilling
52B14SE0017 1985-1985 Interquest Resources Corp Airborne Electromagnetic Very Low Frequency, Airborne Magnetometer, Compilation and Interpretation - Airborne Geophysics
52B13SE0911 1957-1957 Moneta Porcupine Mines Inc Magnetic / Magnetometer Survey
52B13SE0910 1956-1956 R R Brown Diamond Drilling
52B13SE0018 1955-1955 R R Brown Diamond Drilling

7 Drill Holes

Report Number Company Drill Hole Count Elements
52B13SE0910 R R Brown 2
52B13SE0018 R R Brown 2
52B13SW0008 Blue Regal Resc Inc 3

107 Maps

Publication Year Title Scale
P0293 1965 Rainy Lake sheet, District of Rainy River, geological compilation series 126720
P1098 1976 Mineral deposits series, mineral potential map of Ontario, 1976, west central sheet, districts of Kenora (Patricia Portion), Thunder Bay, Algoma, and Cochrane 1013760
P1041 1975 Mineral deposits series, iron deposits of Ontario, west central sheet, districts of Kenora (Patricia Portion), Thunder Bay, Algoma, and Cochrane 1013760
M01141G 1961 Geophysical series, Beaverhouse Lake, Rainy River District, Ontario, airborne magnetic, total field 63360
P1523 1978 Mineral deposits series, Ontario mineral potential, International Falls-Roseau sheet, District of Rainy River 250000
M80515 1980 Geophysical/geochemical series, Atikokan-Mine Centre area (eastern part), airborne electromagnetic survey, total intensity magnetic survey, District of Rainy River 20000
M80437 1980 Geophysical/geochemical series, uranium (ppm), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
ARM17B 1908 Map of the iron industry of Ontario, showing location of iron deposits, also iron and steel works 5068800
P2591 1983 Industrial minerals of Ontario 1500000
P3321 1995 Known Kimberlites of Eastern Ontario 50000
P3533 2004 Tectonometamorphic Map of Ontario 500000,500000
M2190 1970 Ontario geology and principal minerals 4224000
M2196 1971 Ontario geological map, explanatory text, legend, diagrams, title, scale 1013760
M1927A 1927 [Ontario: index map showing maps accompanying Annual Reports 1891-1927] 2217600
M1939A 1939 [Ontario: index map showing maps accompanying Annual Reports 1891-1939] 1900800
M1946-03 1946 Geological map of the Province of Ontario None
M1953A 1953 Mineral map of the Province of Ontario 1267200
M1957A 1957 Mineral map of the Province of Ontario 1267200
M1958A 1958 Ontario Province map showing geological maps published by the Ontario Department of Mines, 1891-1958 1267200
M1958B 1958 Geological map of the Province of Ontario 1267200
M2024 1963 Ontario mineral map 1584000
M2103 1966 Ontario geology and principal minerals None
M2148 1968 Ontario mineral map 1584000
M2211 1971 Ontario, geology and principal mineral collecting localities 4224000
M2310 1974 Ontario mineral map 1584000
M2358 1976 Clay and shale deposits of Ontario 2000000
M2389 1977 Ontario, geology and principal minerals 4224000
M2391 1979 Ontario geological map, explanatory text, legend, diagrams, title, scale 0
M2440 1981 Geological highway map, northern Ontario 1600000
M2472 1985 Ontario mineral map 1584000
M2505 1986 Mines and Minerals Division, administrative areas and offices 1584000
M2506 1986 Geological highway map, northern Ontario 1600000
M2545 1991 Bedrock geology of Ontario, explanatory notes and legend 0
M2579 1992 Chart A-Archean tectonic assemblages, plutonic suites, and events in Ontario 0
M2580 1992 Chart B-Archean tectonic assemblages, plutonic suites, and events in Ontario 0
M2581 1992 Chart C-Proterozoic tectonic assemblages, plutonic suites, and events in Ontario 0
M2582 1992 Chart D-Paleozoic and Mesozoic depositional sequences and events in Ontario/Distribution of Paleozoic and Mesozoic depositional sequences 0
M2583 1992 Tectonic assemblages of Ontario, explanatory notes and legend 0
M80433 1980 Geophysical/geochemical series, manganese (ppm), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M2199 1971 Ontario geological map, west central sheet 1013760
M2542 1991 Bedrock geology of Ontario, west-central sheet 1000000
OFR5326 1982 Mineral potential map of Ontario, west central sheet, districts of Kenora (Patricia Portion), Thunder Bay, Algoma, and Cochrane 1013760
M80440 1980 Geophysical/geochemical series, fluorine in water (ppb), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
P0183 1963 Geological compilation series, Ignace-Atikokan sheet, districts of Thunder Bay, Rainy River and Kenora 126720
M2597 1992 Shaded image of vertical gravity gradient of Ontario, west-central sheet 1000000
P2165 1981 Thunder Bay data series, Jim Lake area, Rainy River District 15840
M80428 1980 Geophysical/geochemical series, copper (ppm), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M2554 1991 Quaternary geology of Ontario, west-central sheet 1000000
P2229 2010 Precambrian Geology, Central Wabigoon Subprovince Area, Northwestern Ontario 250000
M1944A 1944 [Power transmission lines and stations serving mining industry] 1267200
M2518 1987 Surficial geology of northern Ontario 1200000
M80441 1980 Geophysical/geochemical series, pH in water, Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M5104 1980 Marmion Lake, NTS 52B/NW, terrain conditions for general construction, northern Ontario engineering geology terrain study 100000
P2159 1981 Thunder Bay data series, Steep Rock Lake area, Rainy River District 15840
M2663 2001 Precambrian Geology Compilation Series - Quetico Sheet 250000
P2427 1982 Mineral deposits series, uranium and thorium deposits of Ontario, west central sheet, Kenora (Patricia Portion), Thunder Bay, Algoma, and Cochrane districts 1013760
P3349 1995 Precambrian Geology, Atikokan Area 50000
P0970 1974 Mineral deposits series, uranium and thorium deposits of Ontario, west central sheet, districts of Kenora (Patricia Portion), Thunder Bay, Algoma, and Cochrane 1013760
M2464 1985 Righteye Lake, Rainy River District 31680
M2585 1991 Shaded image of total magnetic field of Ontario, west-central sheet 1000000
ARM04A 1895 Map of the south eastern part of the Rainy River District, exhibiting the country in the vicinity of Rainy Lake and River Seine 126720
P1522 1978 Mineral deposits series, Ontario mineral potential, Quetico sheet, districts of Thunder Bay and Rainy River 250000
P2843 1986 Compilation series, geochronology compilation map for Ontario, sheet 4: west-central Ontario, all isotopic systems 1013760
P0188 1963 Geological compilation series, Quetico sheet, districts of Thunder Bay and Rainy River 126720
M01133G 1961 Geophysical series, Steep Rock Lake, Rainy River District, Ontario, airborne magnetic, total field 63360
P3448 2002 Geology and Tectonostratigraphic Assemblages, South-Central Wabigoon Subprovince, Ontario 250000,250000
P0452 1970 Aeromagnetic maps of carbonatite-alkalic complexes in Ontario 4224000
M01132G 1961 Geophysical series, Kasakokwog Lake, Rainy River District, Ontario, airborne magnetic, total field 63360
P3349-REV 2008 Precambrian Geology, Atikokan Area 50000
P1245 1977 Mineral deposits series, molybdenum deposits of Ontario, west central sheet, districts of Kenora (Patricia Portion), Thunder Bay, Algoma, and Cochrane 1013760
M01142G 1961 Geophysical series, Manion Lake, Rainy River District, Ontario, airborne magnetic, total field 63360
P0577 1970 Ogoki River, aeromagnetic compilation map, Kenora, Thunder Bay and Rainy River districts 1013760
P0279 1965 1961 aeromagnetic survey composite map [Quetico-Kenora] 1013760
M1934B 1938 [N Ontario: principal prospecting areas] None
M2589 1991 Vertical magnetic gradient of Ontario, west-central sheet 1000000
P2158 1981 Thunder Bay data series, Miranda Lake area, Rainy River District 15840
P2299 1980 Mineral deposits series, vein silver deposits of Ontario, west central sheet, districts of Kenora (Patricia Portion), Thunder Bay, Algoma, and Cochrane 1013760
P2164 1981 Thunder Bay data series, McOuat Lake area, Rainy River District 15840
M5073 1980 Marmion Lake, NTS 52B/NW, data base map, northern Ontario engineering geology terrain study 100000
M80511 1980 Geophysical/geochemical series, Atikokan-Mine Centre area (western part), airborne electromagnetic survey, total intensity magnetic survey, District of Rainy River 20000
M80435 1980 Geophysical/geochemical series, molybdenum (ppm), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
ARM05B 1896 Map of the southeastern part of the Rainy River District, vicinity of Rainy Lake and River Seine 126720
M80429 1980 Geophysical/geochemical series, lead (ppm), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
P0452-REV 1970 Aeromagnetic maps of carbonatite-alkalic complexes in Ontario 4224000
M2065 1965 Atikokan-Lakehead sheet, geological compilation series, Kenora, Rainy River and Thunder Bay districts 253440
M80432 1980 Geophysical/geochemical series, silver (ppm), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
MS165 1965 Kenora-Rainy River, surficial geology 506880
ARM48A 1939 Atikokan area, District of Rainy River, Ontario 63360
M80434 1980 Geophysical/geochemical series, arsenic (ppm), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M82652 2015 Airborne Magnetic and Gamma-Ray Spectrometric Surveys, Colour-Filled Contours of the Residual Magnetic Field, Mahon Lake and Flatrock Lake Areas 50000
M2576 1992 Tectonic assemblages of Ontario, west-central sheet 1000000
M80426 1980 Geophysical/geochemical series, sample location, Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M80438 1980 Geophysical/geochemical series, loss on ignition, Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M2593 1991 Bouguer gravity of Ontario, west-central sheet 1000000
M82664 2015 Airborne Magnetic and Gamma-Ray Spectrometric Surveys, Ternary Radioelement Image, Mahon Lake and Flatrock Lake Areas 50000
M80512 1980 Geophysical/geochemical series, Atikokan-Mine Centre area (western part), airborne electromagnetic survey, total intensity magnetic survey, District of Rainy River 20000
M80439 1980 Geophysical/geochemical series, uranium in water (ppb), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M80430 1980 Geophysical/geochemical series, nickel (ppm), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M80431 1980 Geophysical/geochemical series, cobalt (ppm), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M80436 1980 Geophysical/geochemical series, iron (%), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M82658 2015 Airborne Magnetic and Gamma-Ray Spectrometric Surveys, Shaded Colour Image of the Second Vertical Derivative of the Residual Magnetic Field and Keating Coefficients, Mahon Lake and Flatrock Lake Areas 50000
P1227 1977 Mineral deposits series, gold deposits of Ontario, west central sheet, districts of Kenora (Patricia Portion), Thunder Bay, Algoma, and Cochrane 1013760
P0845 1973 Summary of airborne geophysical data for northwestern Ontario on file at the resident geologists' offices at Kenora, Red Lake and Thunder Bay 1013760
M80427 1980 Geophysical/geochemical series, zinc (ppm), Canada-Ontario reconnaissance program, lake sediment and water geochemical survey, Rainy Lake-Quetico area, 1979 [GSC open file 675] 250000
M07090G 1965 Geophysical series, Quetico, Ontario, airborne magnetic, total field 253440
P2358 1980 Geological series, Righteye Lake area, District of Rainy River 15840
P1061 1975 Mineral deposits series, nickel deposits of Ontario, west central sheet, districts of Kenora (Patricia Portion), Thunder Bay, Algoma, and Cochrane 1013760

70 Digital Data Products

Publication Year Title
MRD085 2001 Whole Rock Lithogeochemical Data of Prospective versus Barren Volcanic Belts for Volcanogenic Massive Sulphide (VMS) Deposits, Superior Province, Ontario: Operation Treasure Hunt
MRD298 2012 Ontario Rhyolite Database-Northwestern Ontario and the Grenville Province
MRD160 2005 Digital Northern Ontario Engineering Geology Terrain Study (NOEGTS)
MRD018 1991 Ternary Plots Using Lotus 1-2-3
MRD022 1996 Grade-Tonnage Data for the Mineral Deposits Models Described in OFR 5945
MRD037 1998 Ontario Geological Survey Poster Displays - PDAC March 1998
MRD075 2001 Geochronology Data for Ontario
MRD086 2001 A Compilation of References for Kimberlite, Diamond and Related Topics
MRD100 2002 Magmatic Ni-Cu +/- PGE Occurrences and Mafic-Ultramafic Bodies in Ontario
MRD101 2003 Summary of Clinopyroxene Data
MRD126-REV1 2011 1:250 000 Scale Bedrock Geology of Ontario
MRD134 2004 Detectability of Mineral Deposits with Airborne Gravity Gradiometry
MRD138 2004 Airborne Hyperspectral Surface Mapping over Exposed and Covered Mineral Belts in Ontario
MRD139 2004 Demonstration Surveys of the Distributed Acquisition (MT/IP) Method Earth Imaging Technology
MRD142 2004 Lineament Extraction from Digital Elevation Model (DEM) for the Province of Ontario
MRD153 2005 Ontario Geochemistry and Indicator Mineral Database
MRD164 2005 Three Dimensional Surficial Geochemistry
MRD165 2005 Use of a Soil Gas Hydrocarbon Technique to Differentiate Barren Graphitic and Sulphidic Conductors from Ore-Bearing Conductors
MRD166 2005 Gedex Airborne Gravity Gradiometer (AGG) System
MRD169 2005 Development of a High Bandwidth Frequency Domain EM System
MRD170 2005 Geochemical Detection of Disseminated Palladium Mineralization in Ontario
MRD172 2005 Development of Methods and Technology for the Discovery of New Resources Around Existing Mine Infrastructure
MRD175 2005 Downhole Seismic Imaging Method: A New Tool for Deep Mineral Exploration
MRD176 2005 Development and Demonstration of Novel Field-Portable Sample Preparation Methods for On-Site Geochemical Analysis
MRD177 2005 Detectability of Mineral Deposits With Potential Field Methods
MRD178 2005 Development and Evaluation of a 3D Vector Orientation Software Illustrated With Triaxial Gradient Magnetic Data
MRD179 2005 Development of a Relational Physical Rock Property Database
MRD181 2005 Detectability of Mineral Deposits With Electrical Resistivity and Induced Polarization Methods
MRD183 2006 Development of a New Helicopter TEM System for Mineral Exploration
MRD185 2005 A New Aircraft Compensation System for Magnetic Terrains
MRD216 2007 Geology of the Canadian Shield in Ontario: An Update
MRD249 1987 Whole-Rock Geochemistry of Komatiitic and Ultramafic Rocks: Data from the Komatiite Database Project
MRD250 1993 Data from the PETROCH Lithogeochemical Database
MRD252 1995 Digital Bedrock Mapping Symbols
MRD253 2000 Digital Line Standards for Maps
MRD269 2010 Abstracts, 11th International Platinum Symposium, 21-24 June 2010, Sudbury, Ontario, Canada
MRD270 1989 OGS FIELDLOG (circa 1989) - Software for Geologists
MRD371 2018 Ontario Specific Gravity Data for Bedrock Samples Acquired from 1970 to 2014
GDS1035 2003 Single Master Gravity and Aeromagnetic Data for Ontario, ASCII, Excel and Access formats.
GDS1036 2003 Single Master Gravity and Aeromagnetic Data for Ontario, Geosoft Format
LakeGeochemON 2020 Lake Geochemistry of Ontario
MRD159 2005 Lithogeochemical Data for Plutonic Rocks Sampled Between 2000 and 2003
MRD278 2011 A Revised Terrane Subdivision of the Superior Province in Ontario
MRD280 2011 Western Wabigoon GIS Synthesis-2011
MRD127 2003 Electron Microprobe Analyses of Minerals from Fertile Peraluminous Granites and Related Rare-Element Pegmatites, Superior Province, Northwest Ontario: Operation Treasure Hunt
MRD111 2002 Electron Microprobe and Bulk Analyses of Fertile Peraluminous Granites and Related Rare-element Pegmatites, Superior Province, Northwest and Northeast Ontario: Operation Treasure Hunt
MRD063 2000 Au and PGE Data, Atikokan Area Lake Sediment Survey - Operation Treasure Hunt
MRD370 2018 Geochemical Analyses of Rocks in the Central Wabigoon Superterrane, Northwestern Ontario
MRD194 2006 Multidisciplinary Study of North- to North-Northeast-Trending Dikes in the Region West of the Nipigon Embayment: Lake Nipigon Region Geoscience Initiative
GeochrON 2019 Geochronology Inventory of Ontario2019
MRD242 2010 Geochemical Analyses of Rocks, Minerals and Soil in the Central Wabigoon Subprovince Area, Northwestern Ontario
MRD090 2001 Electron Microprobe Compositions of Tantalum-Bearing Oxides and Potassium Feldspar from Rare-Element Granitic Pegmatites, Superior Province, Northwestern Ontario
GDS1077 2015 Ontario Airborne Geophysical Surveys, Magnetic and Gamma-Ray Spectrometric Data, Grid and Profile Data (ASCII and Geosoft Formats) and Vector Data, Mahon Lake and Flatrock Lake Areas
MRD043 1999 Lake Sediment and Water Geochemistry Data from the Atikokan-Lumby Lake Area, Northwestern Ontario
GDS1037-REV 2017 Ontario Airborne Geophysical Surveys, Magnetic Data, Grid Data (ASCII and Geosoft Formats), Magnetic Supergrids
MRD296 2012 Lake Sediment and Water Geochemical Data from the Mine Centre Area, Northwestern Ontario
MRD209 2006 Lithogeochemical Data for Intermediate to Felsic Rocks Sampled in 2005
MRD262 2009 GIS Compilation of Geospatial Data from the Atikokan Area, Northwestern Ontario
MRD232 2008 Sample Location Maps for Archived Peraluminous S-Type Granites, Rare-Element Pegmatites and Miscellaneous Granitic and Migmatitic Rocks, Mainly from the Superior Province of Ontario
MRD187 2005 GIS Compilation of Geology and Tectonostratigraphic Assemblages, Wabigoon-Winnipeg River-Marmion Transect, Western Superior Province, Ontario
MRD115 2002 Geological and Lithogeochemical Data from Mafic-Ultramafic Bodies in Ontario as a Guide to Exploration for Platinum Group Element (PGE) Deposits: Operation Treasure Hunt
GDS1029 2003 Ontario Airborne Geophysical Surveys, Magnetic and Electromagnetic Data, Grid and Profile Data, ASCII and Geosoft Format, Atikokan-Mine Centre Area
EDS022 1993 Topographic Base Map: Seamless Coverage of the Province of Ontario
EDS006-REV 2000 Bedrock Geology, Seamless Coverage of the Province of Ontario
EDS011 1993 Tectonic Assemblages, Seamless Coverage of the Province of Ontario
EDS012 2004 Townships and Unorganized Area Fabric for Ontario
EDS013-REV1 2005 Ontario Drill Hole Database--December 2005 Release
EDS014-REV 2000 Quaternary Geology, Seamless Coverage of the Province of Ontario
MRD395 2021 Pyrrhotite Distribution in Ontario: Near-Surface Occurrences and Discussion of Deleterious Effects in Concrete
ODHD 2016 Ontario Drill Hole Database

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Ministry Contact Information

For detailed information regarding geoscience data in this area please contact the Thunder Bay South District Resident Geologist Office.