minnesota mineral exploration for metallic minerals -...

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169

53

71

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37

169

217

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1

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L a k e V e r m i l i o n

Pelican Lake

NettLake

Ash Lake

Black DuckLake

ElephantLake

MooseLake

LongLake

Vermilion River

JohnsonLake

MyrtleLake

KjostadLake

Echo Lake

CraneLake

LakeJeanette

LoonLake

KabetogamaLake

Black Bay

RainyLake

Shell Lake

Oyster Lake Lake

Agnes

Stuart Lake

BigLake

BigMoose Lake Big Rice

Lake

Cummings Lake

Crab Lake

Burnt

side L

ake

Pine Lake

Trout Lake

Oriniack Lake

Lost Lake

Bear Head Lake Bear Island

Lake

BirchLake

Sand Lake

Sturgeon Lake

Wasson Lake

RoundLake

Deer Lake

Little Fork River

Big Fork River

Boundary Waters Canoe Area Wilderness (BWCAW)

BWCAW

BWCAW

Boundary Waters Canoe Area Wilderness (BWCAW)

BWCA

W

BWCAW

BWCAW

Voyageurs National Park

Voyageurs National Park

Voyageurs National Park

Voyageurs National Park

Voyageurs National Park

East RatRoot River

Peatland SNA

Voyageurs National Park

West RatRoot River

Peatland SNA

Myrtle LakePeatland SNA

Nett LakePeatland SNA

Big IslandSNA

McCarthyBeach StatePark

PotatoLakeSNA

PotatoLakeSNA

LadiesTressesSwampSNA

Bear HeadLake State

Park

Lake Vermilion-Soudan Underground Mine State Park

Scenic StatePark

Lost LakePeatlandSNA

Lost LakePeatlandSNA

VV

VVVV

VV VV VV

VV

VV

VV

VVVV

VV

VV

VV

VV

VV

VV VV

VV

VV

VV

VV

VV

VV

VV

VV

VV

VV

VV

VV

VV VV

VV

AA

AGAG

AGAGAGAGAGAGAGAGAGAG

AGAG

AGAG AGAGAGAG AGAG

AGAGAGAG

AGAG

AGAGAGAG

AGAG

AGAG AGAG AGAG AGAG

AGAG

AGAG

AGAGAGAG

AGAG

AGAG

AGAG

AGAGAGAG

AGAG

AGAG

AGAG

Previously Unrecognized Area of High Gold Potential - Clusters of DNR surveyedtill samples with high total and pristine+modified gold grain counts strongly suggest proximal gold-bearing bedrock source(s).

Skala Road

Murray RoadSouth

DNR Cook Project AreaRegional Gold-in-Till Survey

St. Louis C

ounty

St. Louis C

ountyK

oo

chic

hing

Co

unty

Ko

och

ichi

ng C

oun

ty

Koochiching CountyKoochiching County

Itasca CountyItasca County

St. Louis C

ounty

St. Louis C

ountyIt

asca

Co

unty

Itas

ca C

oun

ty

Canadian National Railway

Canadian National Railway

Canadian National Railway

T. 57, R. 13

T. 58, R. 13

T. 59

, R. 1

3

T. 60, R. 13

T. 61, R. 13

T. 62, R. 13

T. 63, R. 13

T. 64, R. 13

T. 65, R. 13

T. 66, R. 13

T. 67, R. 13

T. 57, R. 14

T. 58, R. 14

T. 59, R. 14

T. 60, R. 14

T. 61, R. 14

T. 62, R. 14

T. 63, R. 14

T. 64, R. 14

T. 65, R. 14

T. 66, R. 14

T. 67, R. 14

T. 57, R. 15

T. 58, R. 15

T. 59, R. 15

T. 60, R. 15

T. 61, R. 15

T. 62, R. 15

T. 63, R. 15

T. 64, R. 15

T. 65, R. 15

T. 66, R. 15

T. 67, R. 15

T. 57, R. 16

T. 58, R. 16

T. 59, R. 16

T. 60, R. 16

T. 61, R. 16

T. 62, R. 16

T. 63, R. 16

T. 64, R. 16

T. 65, R. 16

T. 66, R. 16

T. 67, R. 16

T. 57, R. 17

T. 58, R. 17

T. 59, R. 17

T. 60, R. 17

T. 61, R. 17

T. 62, R. 17

T. 63, R. 17

T. 64, R. 17

T. 65, R. 17

T. 66, R. 17

T. 67, R. 17

T. 68, R. 17

T. 69, R. 17

T. 57, R. 18

T. 58, R. 18

T. 59, R. 18

T. 60, R. 18

T. 61, R. 18

T. 62, R. 18

T. 63, R. 18

T. 64, R. 18

T. 65, R. 18

T. 66, R. 18

T. 67, R. 18

T. 68, R. 18

T. 69, R. 18

T. 70, R. 18

T. 57, R. 19

T. 58, R. 19

T. 59, R. 19

T. 60, R. 19

T. 61, R. 19

T. 62, R. 19

T. 63, R. 19

T. 64, R. 19

T. 65, R. 19

T. 66, R. 19

T. 67, R. 19

T. 68, R. 19

T. 69, R. 19

T. 70, R. 19

T. 57, R. 20

T. 58, R. 20

T. 59, R. 20

T. 60, R. 20

T. 61, R. 20

T. 62, R. 20

T. 63, R. 20

T. 64, R. 20

T. 65, R. 20

T. 66, R. 20

T. 67, R. 20

T. 68, R. 20

T. 69, R. 20

T. 70, R. 20

T. 71, R. 20

T. 57, R. 21

T. 58, R. 21

T. 59, R. 21

T. 60, R. 21

T. 61, R. 21

T. 62, R. 21

T. 63, R. 21

T. 64, R. 21

T. 65, R. 21

T. 66, R. 21

T. 67, R. 21

T. 68, R. 21

T. 69, R. 21

T. 70, R. 21

T. 71, R. 21

T. 57, R. 22

T. 58, R. 22

T. 59, R. 22

T. 60, R. 22

T. 61, R. 22

T. 62, R. 22

T. 63, R. 22

T. 64, R. 22

T. 65, R. 22

T. 66, R. 22

T. 67, R. 22

T. 68, R. 22

T. 69, R. 22

T. 70, R. 22

T. 71, R. 22

T. 57, R. 22

T. 58, R. 23

T. 59, R. 23

T. 60, R. 23

T. 61, R. 23

T. 62, R. 23

T. 63, R. 23

T. 64, R. 23

T. 65, R. 23

T. 66, R. 23

T. 67, R. 23

T. 68, R. 23

T. 69, R. 23

T. 70, R. 23

T. 71, R. 23

T. 59, R. 24

T. 60, R. 24

T. 61, R. 24

T. 62, R. 24

T. 63, R. 24

T. 64

, R. 2

4T.

65, R

. 24

T. 66

, R. 2

4T.

67, R

. 24

T. 68

, R. 2

4

T. 69, R. 24

T. 70, R. 24

T. 71, R. 24

T. 59 R. 24

T. 60

R. 2

4

T. 69, R. 25

T. 70, R. 25T. 70, R. 26

T. 69, R. 26

T. 60, R. 25

T. 61, R. 25

T. 62, R. 25

T. 63, R. 25

T. 64, R. 25

T. 59, R. 25

T. 60

, R. 2

6

T. 61, R. 26

T. 62, R. 26

T. 63, R. 26

T. 64, R. 26

T. 59, R. 26

Ramshead Lake

Nina MooseLake

WhitewaterLake

ColbyLakeEmbarrass Lake

EsquagamaLake

Big RiceLake

Ely Lake

Hoyt LakesHoyt Lakes

AuroraAuroraBiwabikBiwabik

EvelethEveleth

BabbittBabbitt

VirginiaVirginia

ChisolmChisolm

HibbingHibbing

TowerTower

BigforkBigfork

OrrOrr

InternationalFallsInternationalFalls

EffieEffie

CookCook

Fort FrancesFort Frances

Canadian National Railway continues on from here to Prince Rupert, British Columbia

Canadian National Railway continues on from here to Prince Rupert, British Columbia

Exploration for Metallic Mineral Resources in MinnesotaGold

TheARCHEAN

SUPERIOR PROVINCEGREENSTONE BELTSHosting Significant Gold

Resource Potential in NorthernMinnesota

BACKGROUND

The Archean Superior Province greenstone belts that host many of Canada’s richest gold camps continue along strike across the U.S. border and into the north-ern portion of Minnesota. The potential for gold in Min-nesota’s portions of the Wawa and Wabigoon Subprov-inces is excellent, and the exploration models used for nearby gold deposits in Northwestern Ontario (e .g. New Gold, Hammond Reef, Moss Lake/Shebandowan), should be considered. Overburden thickness and compo-sition in Minnesota range from thin layers of glacial drift in the northeast, to saprolite buried under thicker layers of glacial deposits in the northcentral part of the State. The possibil ity of supergene enrichment within sapro-litic zones adds to the list of viable ore deposit models, and expands the area of viable greenstone belt gold ex-ploration.

HIGHLIGHTPreviously Unrecognized Area of High Gold Potential – In 2015 the DNR identif ied two areas with high bedrock gold potential within a portion of the Wawa Subprovince granite greenstone terrane (see T.61, R.14-15 on the map). Clusters of ti l l samples with high total and pris-tine+modified gold grain counts strongly suggest proximal gold-bearing bedrock source(s).

DisclaimerThe State of Minnesota makes no representations or warranties express or implied, with respect to the use of the information contained herein regardless of its format or the means of its transmission. There is no guarantee or representation to the user as to the accuracy, currency, suitabil ity, completeness, usefulness, or reliabil ity of this information for any purpose. The user accepts the information “as is." The State of Minnesota assumes no responsibil ity for loss or damage incurred as a result of any user’s reliance on this information. All maps, reports, data, and other information contained herein are protect-ed by copyright. Permission is granted to copy and use the materials herein for any lawful noncommercial purpose. Any user of this information agrees not to transmit or provide access to all or any part of this information to another party unless the user shall include with the information a copy of this disclaimer.

The BIGFORK

AREA

The LINDENGROVEAREA

The VERMILIONDISTRICT

The VIRGINIA

HORNAREA

The INTERNATIONAL

FALLSAREA

Archean Superior Province Map:February 2017 - Exploration for Metallic Mineral ResourcesGold

References:

Jirsa M and Southwick D (2003) Mineral Potential and Geology of Minnesota. Minnesota Geological Survey, University of Minnesota. Retrieved 2010-12-08.

Jirsa, Mark A.; Boerboom, Terrence J. ; Chandler, V.W.; Mossler, John H.; Runkel, Anthony C.; Setterholm, Dale R.. (2011). S-21 Geologic Map of Minnesota-Bedrock Geology. Minnesota Geological Survey.

Ontario Geological Survey (1993) Bedrock geology, seamless coverage of the Province of Ontario; Ontario Geological Survey, Data Set 6. Scale 1:1,000,000.

Ontario Geological Survey (2017) Mineral Deposit Inventory—2017.

Map Locator

Duluth

Minneapolis and St. Paul

MINNESOTA

Iron Ore Mining Features

Biwabik Iron Formation

Taconite or Natural Iron Ore PitTailings Basin

State Exploration Leases

General Bedrock Geology Map Units

Penokean Virginia Formation, Thomson Formation, or Pokegama Quartzite

Mafic metavolcanic and metasedimentary or mafic intrusive rocks: (MGS S-21 map units - Auv, Avs, Amv, Amm, Ami, Akv, Aks, Akc, Agp, Acv, Aag)

Map Scale 1:175,000

Massive granodiorite to granite or intermediate to felsive intrusive rocks: (MGS S-21 map units - Agd, Agm, Agn, Agr, Agt, Agu, Aqa, Aqg, Aql, Aqm, Aqp, Aqt, Asd)

Metaconglomerate, sandstone: Asc

Metasedimentary rocks and derived gneisses: (MGS S-21 map units - Asg, Aqs, Ams)

Archean Superior Province Related Map Units

Iron formation: Aif Iron formation

Penokean Related Map Units

Active state nonferrous metallic mineral leasesSee company label codes below for map labels.

Terminated state nonferrous metallic mineral leases (1967-August 2016)

Bedrock Geology data from the Minnesota Geological Survey’s 2011 S-21 statewide map at 1:500,000 scale . State active and terminated/expired nonferrous metall ic minerals leases (as of 2/1/2017) and iron ore mining features (as of 1/1/2015) from DNR’s Division of Lands and Minerals.

Company labeled codesGold (Au) Related State LeasesAG - AngloGold Ashanti Minnesota has 33 state leasesV - Vermillion Gold has 24 state leasesA - Agate Lake Resources has 1 state lease

ONTARIO, CANADA

MINNESOTA USA

Quetico Subprovince

Quetico Subprovince

Wabigoon Subprovince

Wawa Subprovince

Wawa Subprovince

Inset Map Displaying Gold Mines, Past Producers, and Geologic Subprovinces in Minnesota and Ontario

Subprovince Types Gold

Plutonic

Metasedimentary

Volcanoplutonic

Producing Mine

Past Producer

Exploration Areasin Minnesota

Printed Map Scale: 1:12,000,000Base Maps: 1:500,000 (MGS)/1:1,000,000 (OGS)After Jirsa and Southwick (2003), OGS (2017)

Hammond Reef

Cameron Lake

InternationalFalls

VirginiaHorn

Bigfork

Vermilion

LindenGrove

Advanced Gold Projectsin Canada:Rainy River - 8M oz Hammond Reef - 7M ozMoss Lake - 3M ozCameron Lake - 1.5M oz

Cook

NewGold

English River Subprovince

Winnipeg R. Subprovince

Uchi SubprovinceBerens R. Subprovince

MossLake

HEMLO DISTRICT

LAKEABITIBI

DISTRICT

BEARDMORE- GERALDTON DISTRICT

PICKEL LAKE DISTRICT

RED LAKE DISTRICT

LakeSuperior

0 1 2 3 4 5 6Miles