Mineral Deposit Inventory for Ontario

Ministry of Energy, Northern Development and Mines

Permanent Link to this Record: MDI42C02NE00017

Deposit: MDI42C02NE00017

General

Mineral Deposit Identification
Deposit Name(s) Magpie Iron Range - 1909, Magpie Mine - 1909
Related Deposit Type None
Deposit Status past producing mine with reserves
Date Created 1980-Jul-29
Date Last Modified 2005-Dec-07
Created By Q Unknown
Revised By A Wilson

Commodities

Primary Commodities: iron

Location

Township or Area: Leclaire (a.c.r.)

Latitude: 48° 12' 46.14"    Longitude: -84° 42' 57.69"

UTM Zone: 16    Easting: 669667   Northing: 5342477    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42C02NE

Point Location Description: Occurrence 3c map P.2636

Location Method: conversion from mdi

Source Map: HEADFRAME AT OCCURRENCE 3C MAP P.2636

Sources Map Scale: 1:15 840

Access Description: The Magpie Mine is accessible by boat from Steephill Falls power dam. The Magpie River Reservoir has flooded to the formerr railway level. From this point the mine is accessible by a 2.5 - 3 km traverse. Alternately, the mine site can be accessed by an old bush road (McCormick Lake road) east from its junction with Highway 17 for a distance of approximately 12 km.

Exploration and Mining History

1909-1910: Lake Superior Corporation Ltd. - property staked, trenched, stripped, diamond drilling (7224.2 ft). 1910: Lake Superior Corporation Ltd. - sinking of 4 compartment shaft; main production shaft eventually reached 611 feet. 1911: Lake Superior Corporation Ltd. - roasting plant constructed 1911-1914: mining of deposit, operations suspended in October 1914 due to low price of iron/steel; 1915 - 1921: mining resumes. Mine closed March 8 1921. 1951: Jalore Mining Company - detailed mapping. 1951-1953: Algoma Steel Corporation Ltd. - 4 ddh (5512 ft.).

Assessment Work on File

Assessment Work on File
Office File Number   Online Assessment File Identifier   Online Assessment File Directory  
LECLAIRE 12A1        
LECLAIRE 15A1        
LECLAIRE 13        
WP ESQUEGA.33        

Geology

Province: Superior

Subprovince: Wawa

Belt: Michipicoten

Geological Age: Neoarchean    Geochronological Age: 2750 Ma    Geochron. Age Ref.: OFR 5888

Tectonic Assemblage: Catfish

Geology Comments

04/29/1999 (A Wilson) - The Magpie Iron Range extends from Iron Knob, where it bends sharply and becomes the Alice Iron Range. The west end of the range extends to just west of the large diabase dike that cuts the Magpie Iron Range and other, short, faulted segments of the iron formation occur to the northwest. These segments have been offset by a series of right lateral faults. The Magpie Iron Range, along with the Alice Iron Range, may define a minor fold on the south side of the Centre Anticline of the greenstone belt.

Mineral Deposit Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
ironstone 1 carbonate (siderite) facies host
intermediate metavolcanics 2 intermediate to mafic hanging wall
breccia 3 footwall
lamprophyre 4 near

Lithology Comments

04/29/1999 (A Wilson) - The Magpie Iron Formation consists only of the lower siderite portion of the iron formation. The upper sulphide, chert, magnetite and graphite facies are absent. The iron formation becomes magnetite-rich to the east where it merges with the Alice Range and to the west. The central part contains the least amount of magnetite. The presence of magnetite diminishes the value of the ore. The rocks immediately overlying the iron formation are chloritic schists that grade into intermediate (dacitic) metavolcanics. These rocks are predominately massive although a few narrow tuffaceous units have also been observed. To the south of the iron formation the volcanic breccia is composed of up to 50% fragments within a siliceous matrix. A mica dike (lamprophyre? kimberlite?) was reported on the 3rd level of the mine. This mass reportedly increased in width with depth in the mine and significantly reduced the volume of the ore. Elliptical lense like masses of carbonate have been observed in samples of this material taken from the waste piles at the mine.

Mineralization

Deposit Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Habit Description
1 siderite economic ore n/a
1 magnetite economic gangue n/a
2 pyrite economic gangue n/a

Mineralization Comments

04/29/1999 (A Wilson) - The ore was described as being very fine-grained, dense, buff grey to pale yellow carbonate sprinkled with pyrite. Analysis of diamond drill core from a hole drilled beneath the workings in 1951-53 assayed 43.37% Fe, 9.66% S and 16.05% Si over 15 feet. Roasting of the ore produced a sintered product grading 50.10% Fe, 9.14% Si and 2.74% Mn.

Mineral Deposit Details

Deposit Classification
Rank Classification            
1 sedimentary
Deposit Characteristics
Rank Characteristic            
1 stratiform
2 massive

Mineral Zones - Size and Shape


Zone Name: MAGPIE IRON RANGE - Rank 1
Shape Length Thickness Depth Strike Dip Plunge Trend Age Reference
unknown 640 15 270 90 2750 MA OFR 5888

Rank: 1       Structure Type: fold


Production Data
Year Tonnes Commodities Commodity Production Reference Comment
1913 24738 TONNAGE IS OF SINTER PRODUCED, NOT ORE
1914 112836 Iron TONNAGE IS SINTER PRODUCED - NOT ORE
1915 143732 Iron TONNAGE IS SINTER PRODUCED NOT ORE
1916 233258 Iron TONNAGE IS SINTER PRODUCED - NOT ORE
1917 218897 Iron TONNAGE IS SINTER PRODUCED - NOT ORE
1918 187148 Iron TONNAGE IS SINTER PRODUCED - NOT ORE
1919 210479 Iron TONNAGE IS SINTER PRODUCED - NOT ORE
1920 117715 Iron TONNAGE IS SINTER PRODUCED - NOT ORE
1921 64708 Iron TONNAGE IS SIDERITE PRODUCED - NOT ORE
Ore Reserves Data
Zone Year Category Tonnes Reference Comments Commodities
Magpie Mine 1921 unclassified 332400 OFR 5587 RESERVE FIGURES FROM LAKE SUPERIOR COMPANY AT TIME OF MINE CLOSURE Iron 36 NA

References

Map - MICHIPICOTEN AREA

Publication Number: Map 1972    Scale: 1:63 360    Date: 1926

Reference Location: Timmins RGP


Map - MICHIPICOTEN AREA

Publication Number: P.184    Scale: 1:126 720    Date: 1953

Reference Location: Timmins RGP


Map - MANITOUWADGE-WAWA

Publication Number: Map 2220    Scale: 1:253 440    Date: 1972

Reference Location: Timmins RGP


Book - GDIF - LECLAIRE TP, UNPUBLISHED

Publication Number: GDIF    Date: 1987

Author: Resident Geologist Staff

Reference Location: Timmins RGP


Map - LECLAIRE TOWNSHIP

Publication Number: P.2636    Scale: 1:15 840    Date: 1985

Reference Location: Timmins RGP


Book - MICHIPICOTEN IRON RANGES, P. 95-97

Publication Number: Memoir 147    Date: 1926

Author: Collins, Quirke, Thomson

Reference Location: Timmins RGP


Book - NMI FILE, 42C/02 FE 06

Publication Number: N/A    Date: 1996


Book - Iron Deposits of Ontario, p.72

Publication Number: MRC 11    Date: 1968

Author: Shklanka, R.

Reference Location: Timmins RGP


Book - Wawa Mineral Deposits Database, p. 242

Publication Number: OFR 5775    Date: 1992

Author: Frey, E.D. and Stewart, R.C.

Reference Location: Timmins RGP


Book - GEOLOGY OF ABOTOSSAWAY,CORBIERE,LECLAIRE AND MUSQUASH TWP. P.291-297

Publication Number: OFR 5587    Date: 1993

Author: Sage, R.P.

Reference Location: Timmins RGP


Book - SMDR FILE, #01071

Publication Number: N/A    Date: 1996


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For detailed information regarding this mineral deposit please contact the Timmins Resident Geologist District Office