Ontario Geological Survey
Permanent Link to this Record:
MDI32D04SW00013
| Record Name(s) | Adams - 1984, Jalore - 1984 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Past Producing Mine With Reserves or Resources |
| Date Created | 1984-Apr-19 |
| Date Last Modified | 2023-Aug-16 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Township or Area: Boston
Latitude: 48° 4' 9.31" Longitude: -79° 56' 4.46"
UTM Zone: 17 Easting: 579369.13 Northing: 5324546.36 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 32D04SW
Point Location Description: Open pit mine
Location Method: Conversion from MDI
1954: Jone & Laughlin Steel Corporation acquired a mining option on the site and continued an exploration program and brought the property to lease. 1957-1962: Continued exploration. Announced in 1962 announced decision to bring to production and construction commenced. 1964: first shipment of pellets left the mine bound for Pennsylvania. 1971: Mine purchased by Dofasco. Pellets sent to Hamilton. 1991: Decision made to close the mine in March 1990.
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Tectonic Assemblage: Tisdale
Geological Age: Archean
May 09, 2014 (D Guidon) - The Lower Tisdale assemblage is part of the Western Abitibi suprovince. The assemblage is composed of volcanic and sedimentary rocks, for the most part, bounded by the Larder Lake-Cadillac Fault Zone to the north.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Magnetite | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Quartz | Economic | Gangue | ||||
| 3 | Chlorite | Economic | Gangue |
May 09, 2014 (D Guidon) - From Drury, J.J. in Lovell (1967) The iron formation is well banded consisting of alternating layers of chert and magnetite. Chert varies on clolour from greyish to reddish. Grain size is generally less than 1 mm but occasionally has a sugary texture. Chert layers occur as fine laminae or massive beds several cm thick. Magnetite layers average just over 1 cm. Most of the horizons of iron-formation are 30 to 45 m thick. Locally, it exceeds 60 m to a maximum of 180 m due to folding and some brecciation. The largest ore body, the South pit, measured 900 m by up to 180 m wide. The total crude open-pit crude tonnage is about 100 000 000 tons (90 900 000 t) or about 30 000 000 tons (27 300 000 t) of concentrate. The pits cover about 50% over a 5 km strike length.
May 09, 2014 (D Guidon) - From Drury, J.J. in Lovell (1967) The Boston Township Iron Range is about 10 km long and varies in width from 900 m to 1200 m. The band is arc shaped and is more or less conformable to the southeastern boundary of the Lebel Stock. The iron formation is well banded consisting of alternating layers of chert and magnetite. Chert varies on clolour from greyish to reddish. Grain size is generally less than 1 mm but occasionally has a sugary texture. Chert layers occur as fine laminae or massive beds several cm thick. Magnetite layers average just over 1 cm. Cherty quartzite is composed predominately of silica and is similar to the chert in the iron formation. Magnetite content does not exceed 5% and is mainly disseminated. Graphite is fine and disseminated and imparts a black colour. Pyrite and pyrrhotite is common, mostly as beds. Volcanics rocks are mafic to intermediate mainly massive. Locally, pillows are observed and can be used to determine tops. Tuffs are abundant in the east and west ends of the iron range. They tend to be fine grained and bedded. Three types of dikes are found in the iron range. These are: syenite, lamprophyre and diabse.
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Adams | 1990 | Unclassified | 19398300 | OGS MP 152, P.243 | Est. reserve of 14 yr. - estimated grade - does not include res. from prod. pits (21.383 million tons crude from 4 undeveloped ore bodies (Evoy, West Central, East Central and North Central.. Does not include ore in 4 active pits at time of closure – Peria may be only pit with ore at the time of closure.) 3.8 million tons for crude ore required to produce 1.1 million tons of pellets | Iron 26 % |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1990 | 92443940 |
Iron 24327000 |
Adams Mine: History and decomissioning 1989 | total production 101.902 million tons with 3.8 million tons of ore to produce 1.1 million tons of fluxed pellets |
Publication - Geology of the Adams Mine; CIM Bulletin 1966, vol. 59, no. 46
Publication Number: CIM Bul 59 Page: 176-181 Date: 1966
Author: Dubuc, F.
Publisher Name: Canadian Institute of Mining, Metallurgy and Petroleum
Location:
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 457-458 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
File - Res/Reg Property Visit Report KL #108
Publication Number: PV 108 Date: 1996
Author: Lovell, H.L.
Publisher Name:
Location: Kirkland Lake RGP office
Mono - Soapstone in Ontario
Publication Number: OFR5764 Page: 125-127 Date: 1991
Author: Gerow M.C., Sherlock E.J., Bellinger J.A.
Publisher Name: Ontario Geological Survey
Location:
Book - inKirkland Lake and District; in C.I.M.M. Centennial Field Excursion, Northwester Quebec – Northern Ontario, p.72-99.
Publication Number: CIMM Field Excu Date: 1967
Author: Drury, J.J.
Publisher Name: CIMM
Location: Kirkland Lake RGP office
Map - Geological Compilation of the Kirkland Lake Area, Abitibi Greenstone Belt
Publication Number: P3425 Scale: 1:100,000 Date: 2000
Author: Ayer J.A., Trowell N.F.
Publisher Name: Ontario Geological Survey
Location:
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