Ontario Geological Survey
Permanent Link to this Record:
MDI42A10NW00002
| Record Name(s) | Alexo Mine - 1907, Alexo Deposit - 1907, Harlin Nickel - 1944 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Past Producing Mine With Reserves or Resources |
| Date Created | 1981-Feb-20 |
| Date Last Modified | 2023-Apr-12 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Nickel
Secondary Commodities: Platinum, Palladium, Cobalt
Township or Area: Dundonald
Latitude: 48° 39' 28.76" Longitude: -80° 48' 45.14"
UTM Zone: 17 Easting: 513805 Northing: 5389454 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42A10NW
Point Location Description: Shaft located on lot 1 concession 3
Location Method: Data Compilation
Access Description: The Alexo Deposit is located on the common boundary between Dundonald and Clergue townships. It can be accessed by driving north from highway 101 along highway 67 for approximately 25 km. The property is accessed via a private access road.
1907: A. Kelso - discovery. 1909: Kelso et al./ Canadian Copper Co. pitted and diamond drilled. 1912: The Mond Nickel Co. processed a 1,792 ton bulk sample. 1913-1918: Alexo Mining Co. Ltd.: mining (open pit and underground); 51,861 tons (approx) mined and shipped. 1936: Caniptau Mines Ltd.: dewatered workings, U/G sampling 1939: Intern. Nickel Co. of Canada Ltd.: ground geophysics, diamond drilling. 1942-1943: Clifton Consol. Mines Ltd. and Harlin Nickel Mines Ltd.: mining (approximately 4900 tons of material). 1952-1953: Noranda Mines Ltd.: ground geophysics, mapping, diamond drilling. 1968: Alsop Mines: 6 ddh (3729 ft). 1971-72: Dome Expl. Ltd.: ground geophysics. 1973: Asarco Expl. Ltd.: ground geophysics. 1976: Noranda Mines: ground geophysics. 1984: Kidd Creek Exploration Co. Ltd. – geological mapping. 1991: Noranda Mines Ltd. - 3 ddh (854.6 m). 1996-98: Outokumpu Mines Ltd. - mapping, ground geophysics, 49 ddh (10 859m). 2000-01: Hucamp Mines Ltd. - trenching, sampling, ground geophysics, 21 ddh (2802m). 2003-05: Legendary Ore Mining Corporation/Canadian Arrow Mines Ltd: property purchased from Outokumpu, bulk sampling (20,000 tons), ore trucked to Strathcona Mill, diamond drilling, ground geophysics, in production 2004-2005: Canadian Arrow Mines Ltd. - 12,710.2 m in 132 DDH with drilling on both the Alexo and Kelex deposits., bulk sampling, stripping, in production. 2010-2012: Canadian Arrow Mines Ltd. - DD-16, metallurgical testing, dewatering.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-1516 / 2.1203 | 42A10NW0583 | 42A10NW0583 |
| T-1516 / 2.1205 | 42A10NW0585 | 42A10NW0585 |
| T-1516 / 2.1085 | 42A10NW0593 | 42A10NW0593 |
| T-0791 / 63.2357 | 42A10NW0767 | 42A10NW0767 |
| T-1516 / 2.1206 | 42A10NW8835 | 42A10NW8835 |
| T-0081 / 2.774 | 42A10NW0795 | 42A10NW0795 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Tectonic Assemblage: Kidd-Munro
Geological Age: Archean Geochronological Age: 2714 Ma Geochron. Age Ref.: Spec Vol 4, part 1, P.405-482
Metamorphism Grade: Greenschist
Jul 24, 2018 (C Salo) - Bedrock near the mine consists mainly of weakly metamorphosed (greenschist or lower facies) (submarine) volcanic and interflow sedimentary and/or volcaniclastic rocks of the (Archean) Kidd-Munro Group. Intrusive rocks in the area include semiconcordant gabbro sills, some of which intrude the komatiitic body which hosts the sulfide mineralization. The Dundonald Sill is a large mafic to ultramafic body which intrudes the volcanic stratigraphy stratigraphically beneath the Alexo ultramafic concordant body.
| Rock Type | Rank | Composition | Texture | Relationship | Intermediate lava flow-unsubdivided | 1 | Andesite | Contains |
|---|---|---|---|---|
| Peridotite | 2 | Peridotite | Adjacent | |
| Dunite | 3 | Dunite | Near | |
| Mafic lava flow-unsubdivided | 4 | Mg Tholeiitic Basalt | Massive To Pillowed | Near |
| Ultramafic lava flow-unsubdivided | 5 | Komatiite | Host |
Dec 07, 2005 (A Wilson) - The ultramafic body occurs as a concordant lens with a dunitic core and pyroxene-rich peridotitic margins atop a series of magnesium-rich basalts and intercalated hyaloclastite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Ore | ||||
| 2 | Pentlandite | Economic | Ore | ||||
| 3 | Heazlewoodite | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Ore | ||||
| 5 | Violarite | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Magnetite | Economic | Gangue | ||||
| 3 | Chromite | Economic | Gangue | ||||
| Serpentine | Alteration | Serpentinization | 1 | Unknown | Network |
Nov 29, 2012 (A Wilson) - A grab sample collected from Alexo in 2001 returned an assay of 3.22% Ni and 2.32 g/t Pt/Pd with a Pd:Pt ratio of 3:1. Channel sample completed in 2002 returned values of 1.77 to 6.4% Cu and 0.72 to 3.33 g/t Pt/Pd over widths ranging from 0.1 to 4.3 m to the east of the old mine. To the west of the mine values of 1.1 to 5.26% Ni and 0.49 g/t to 1.78 g/t Pt/Pd were obtained from channel sampling. Diamond drilling returned the following intersections: 2.02% Ni, 0.08% Co 1.18 g/t Pt+Pd over 2.8 m; 1.58% Ni, 0.09% Co, 0.68 g/t Pt+Pd over 2.95 m; 1.91% Ni, 0.10% Co and 0.57 g/t Pt+Pd over 1.6 m. Selected grab samples collected by Hucamp returned the following assays: 3.37% Ni, 0.31% Cu, 1.43 g/t Pt+Pd over 2.4 m; 4.11% Ni, 0.15% Cu and 3.33 g/t Pt+Pd over 0.1 m; 6.9% Ni, 0.2% Cu and 1.2 g/t Pd+Pt over 0.4m. Sulphur is concentrated at the historical Alexo Mine in footwall embayments of a komatiitic peridotite / dunite unit. Massive and semi-massive sulphides also extend into the footwall andesite. Massive and semi-massive lenses of sulphide minerals range in thickness from a few centimetres to greater than 12 m with an aureole of net-textured and disseminated sulphides. The disseminated sulphides extend laterally and vertically from the massive zones for several tens of metres. The massive ore consists of approximately 15 to 20 % pentlandite, 80 to 85 % pyrrhotite, with trace chalcopyrite unevenly distributed throughout. The nickel content of the sulphides ranges between 7 to 10 % in 100 % sulphide.
Dec 07, 2005 (C Salo) - Massive and disseminated Fe-Ni-Cu sulfide mineralization localized along the base of a concordant ultramafic body constitutes the Ni-Cu orebody which was commercially worked. The host ultramafic body has peridotite margins, a dunitic core, and is 70 m thick, about 500 m long, strikes west southwest, dips north 80 degrees, and is on the south limb of an arcuate concave south syncline (Coad 1979). Geochemically the host ultramafic body is komatiitic, and it is now serpentinized. The reported presence of spinifex texture within the host ultramafic rock suggests that it is extrusive and was deposited as a flow or series of flows. Massive and pillowed Mg-tholeiitic basalt (Macdonald and Cherry 1987) and hyaloclastic and fragmental rock host the komatiite and indicate that deposition of the host rocks occurred subaqueously. Massive sulfide and related mineralization at the mine are reported (Coad 1979) to have ranged from 5 cm to 3.0 m in thickness, to have been located either stratigraphically above a (thin) basal pyroxene rich portion of the komatiitic host or directly on (stratigraphically underlying) footwall volcanic rock and to have occupied shallow embayments along the footwall contact. Pye et al. (1972) indicated the orebody to be about 700 feet long and to range from 3 to 20 feet in width. Locally, massive sulfides have been observed to penetrate into the footwall volcanic rocks up to 5.0 m (Naldrett and Gasparrini 1971). Massive sulfides are in sharp and sheared (Lowther 1950) contact with stratigraphically overlying net textured sulfide mineralization which is developed in peridotite up to 4.0 m from massive sulfide mineralization.
| Rank | Classification |
|---|---|
| 1 | Komatiite-hosted |
| Rank | Characteristic |
|---|---|
| 1 | Massive |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Tabular | 500 | 70 | 225 | 80 | 2707 +/-3 MA | P.3398 |
Date: Mar 05, 2004
Geologist: A Wilson
Notes: Sulphide concentrations are in footwall embayments of akomatiitic perodotie/dunite unit overlying andesite. Massive and semi-massive sulphide alo extends into the footwall andesite. The sulphide minerals are in massive and semi-massive lenses that range in thickness from a few cm to >12 m with an aureole of net-textured and disseminated sulphides. The disseminated sulphides extend laterally and vertically from the massive zones for several 10's of metres. There is a suggestion of another Ni-sulphide bearing channel at depth, beneath the Alexo channel, based on a drill hole in 1918 which intersected 4 ft of disseminated ore at a vertical depth of 50 ft, approximately 900 ft west o the Alexo shaft.
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Alexo Open Pit | 2012 | Indicated Mineral Resource | 18000 | NI 43-101 Report 2012 | 540,000 lb Ni; 60,000 lb Cu, 20,000 lb Co | Cobalt 0.06 Percent, Copper 0.16 Percent, Gold 0.04 Grams per Tonne, Nickel 1.36 Percent, Palladium 0.41 Grams per Tonne, Platinum 0.16 Grams |
| Alexo Underground | 2012 | Indicated Mineral Resource | 6000 | NI 43-101 Report 2012 | 10,000 lb Ni; 1,000 lb Cu, 1,000 lb Co | Cobalt 0.04 Percent, Copper 0.10 Percent, Gold 0.03 Grams per Tonne, Nickel 0.75 Percent, Palladium 0.22 Grams per Tonne, Platinum 0.10 Grams per Tonne |
| ALEXO | 2001 | Unclassified | 22352 | Hucamp Mines Ltd. clipping file | reserve estimated above 120 ft level | Nickel 4.34 Percent |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 2005 | 26224 |
Nickel 1300000 Pounds |
2012 NI 43-101 rpt p. 30 | average grade 1.97% Ni, 0.20% Cu |
| 1944 | 2813 |
Copper 15311 Kilograms Nickel 114836 Kilograms |
AR 54 PT 2, P. 110; 43-101 RPT FOR CANADIAN ARROW FEB. 2004 | average grade 4.5% Ni and 0.6% Cu |
| 1943 | 2188 |
Copper 15879 Kilograms Nickel 89321 Kilograms |
AR 53 PT 1, P. 186; 43-101 REPT FOR CANADIAN ARROW FEB 2004 | production grade was 4.5% Ni and 0.80% Cu |
| 1936 | 60 | OGS production history scanned file | ||
| 1919 | 2251 |
Copper 14090 Kilograms Nickel 95773 Kilograms |
AR 20 PT 1, P. 18; ALEXO MINING CO. CLIPPING FILE | average grade to 1919 was 4.69% Ni and 0.69% Cu |
| 1918 | 8756 |
Copper 48454 Kilograms Nickel 357449 Kilograms |
AR 28, P. 22 | average grade 0.61% Cu and 4.5% Ni |
| 1917 | 5958 |
Copper 31889 Kilograms Nickel 234225 Kilograms |
AR 27 P. 25 | average grade 0.59% Cu 4.5% Ni |
| 1916 | 8421 |
Copper 34377 Kilograms Nickel 313215 Kilograms |
AR 26, P. 108 | average grade 0.45% Cu 4.10% Ni |
| 1915 | 12114 |
Copper 74729 Kilograms Nickel 516513 Kilograms |
average grade 0.68% Cu 4.7% Ni | |
| 1914 | 8110 |
Copper 48558 Kilograms Nickel 320041 Kilograms |
OFR 5735 P. 1099 | average grade 0.66% Cu 4.35% Ni |
| 1913 | 7646 |
Copper 323233 Kilograms Nickel 36762 Kilograms |
AR 24, P. 24, 144 | average grade 0.53% Cu 4.66% Ni |
| 1912 | 4669 |
Copper 21178 Kilograms Nickel 165190 Kilograms |
AR 23, P. 20, 167 | average grade 0.50% Cu, 3.9% Ni |
Article - Platinum group elements in Abitibi komatiites associated with nickel sulphide deposits
Publication Number: MP098.017 Page: 1-11 Date: 1997
Author: Barnes S-J., Gorton M.P., Naldrett A.J.
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist files T-0345, T-5421
Publication Number: Date:
Author:
Publisher Name:
Location: Timmins RGP office
Map - Clergue Township, District of Cochrane
Publication Number: P0308 Scale: 1:15,840 Date: 1997
Author: Carlson H.D., Ginn R.M.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Technical Report and Updated Resource Estimate on the Alexo and Kelex Deposits, Alexo Property
Publication Number: 2012 NI 43-101 Date: 2012
Author: Puritch, E., Hayden, A., Yassa, A., Burga, D.
Publisher Name: P&E Mining Consultants for Canadian Arrow Mines
Location: SEDAR
Part - Sudbury nickel field restudied
Publication Number: ARV43-02 Date: 1998
Author: Burrows A.G., Rickaby H.C.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Ultramafic flows and nickel sulphide deposits in the Abitibi Orogenic Belt; Geological Survey of Canada, Paper no. 72-1A
Publication Number: Paper 72-1A Page: 75-81 Date: 1972
Author: O.R. Eckstrand
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/105332
Map - Timmins data series, Dundonald Township, District of Cochrane
Publication Number: P2029 Scale: 1:15,840 Date: 1980
Author: Hunt D.S., Richard J.A.
Publisher Name: Ontario Geological Survey
Location:
Article - Nickel deposits associated with ultramafic rocks within greenstone belts of the Abitibi and Wawa subprovinces
Publication Number: MP063.046 Page: 156-157 Date: 1997
Author: Jost M.
Publisher Name: Ontario Division of Mines
Location:
Map - Geology of Dundonald Township
Publication Number: P3345 Scale: 1:20,000 Date: 1995
Author: Muir T.L.
Publisher Name: Ontario Geological Survey
Location:
Article - Field relations and geochemistry of Au, Ni, and Cr deposits in ultramafic-mafic volcanic rocks
Publication Number: MP093.027 Page: 144-162 Date: 1997
Author: Kerrich R.W., Robinson D.J., Hutchinson R.W., Hodder R.W.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological Compilation: Dundonald and Clergue Townships
Publication Number: P3394 Scale: 1:20,000 Date: 1999
Author: Barrie C.T.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological Compilation of the Lake Abitibi Area, Abitibi Greenstone Belt
Publication Number: P3398 Scale: 1:100,000 Date: 1999
Author: Ayer J.A., Berger B.R., Trowell N.F.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Monteith Area
Publication Number: P3367 Scale: 1:50,000 Date: 1997
Author: Berger B.R.
Publisher Name: Ontario Geological Survey
Location:
Article - Platinum group element concentrations in some magmatic ores in Ontario
Publication Number: MP093.017 Page: 171-178 Date: 1997
Author: Naldrett A.J., Innis D.G., Sowa J.M.
Publisher Name: Ontario Geological Survey
Location:
Map - Matheson-Black sheet, District of Cochrane
Publication Number: P0119 Scale: 1:63,360 Date: 1997
Author: Ginn R.M., Savage W.S., Leahy E.J.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Iroquois Falls-Lake Abitibi sheet, District of Cochrane
Publication Number: P0140 Scale: 1:126,720 Date: 1997
Author: Savage W.S., Thomson R., Fenwick K.G.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Dundonald Township, District of Cochrane
Publication Number: P0307 Scale: 1:15,840 Date: 1997
Author: Carlson H.D., Ginn R.M.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area
Publication Number: OFR5735 Date: 1990
Author: Bath A.C.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Dundonald and German Townships
Publication Number: OFM0232 Scale: 1:50,000 Date: 1994
Author: Muir T.L.
Publisher Name: Ontario Geological Survey
Location:
Part - Alexo nickel mine, Timiskaming District
Publication Number: ARV26.010 Page: 258-274 Date: 1998
Author: Baker M.B.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Statistical review of the mineral industry of Ontario for 1914
Publication Number: ARV24-01.001 Page: 20, 144 Date: 1998
Author: Gibson T.W.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Statistical review of the mineral industry of Ontario for 1913
Publication Number: ARV23-01.001 Page: 20, 47, 167 Date: 1998
Author: Gibson T.W.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Mines of Ontario
Publication Number: ARV25-01.003 Page: 15, 103 Date: 1998
Author: Sutherland T.F., Collins E.A., McMillan J.G., Bartlett J.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Statistical review of the mineral industry of Ontario for 1917
Publication Number: ARV27-01.001 Page: 25 Date: 1998
Author: Gibson T.W.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Mines of Ontario
Publication Number: ARV28-01.003 Page: 22, 131 Date: 1998
Author: Sutherland T.F., Collins E.A., Stovel J.H., Webster A.R.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Statistical review of the mining industry of Ontario for 1919
Publication Number: ARV29-01.001 Page: 18 Date: 1998
Author: Rogers W.R.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Mines of Ontario in 1943
Publication Number: ARV53-01.003 Page: 185-186 Date: 1997
Author: Tower W.O., Smith R.L., Bawden W.E., Cooper D.F., Taylor J.B., Little E.S., Weir E.B., Douglass D.P.
Publisher Name: Ontario Dept. of Mines
Location:
Article - Quaternary geology and geochemical exploration in the Matheson area
Publication Number: MP136.294 Date: 1997
Author: McClenaghan M.B., Lavin O.P., Nichol I., Shaw J.
Publisher Name: Ontario Geological Survey
Location:
Part - Mines of Ontario in 1944
Publication Number: ARV54-02.001 Page: 110 Date: 1997
Author: Tower W.O., Smith R.L., Bawden W.E., Cooper D.F., Taylor J.B., Little E.S., Weir E.B., Douglass D.P.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Nickel sulphide deposits associated with ultramafic rocks of the Abitibi belt and economic potential of mafic-ultramafic intrusions
Publication Number: S020 Page: 39-44 Date: 1979
Author: Coad P.R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 116-117 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Folio - Clergue Township, District of Cochrane
Publication Number: GDIF400 Date: 1997
Author: Kirkland Lake RGO
Publisher Name: Ontario Geological Survey
Location:
Book - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Page: 224 Date: 1985
Author: Rose, D.G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
Mono - Distribution and characteristics of the sulphide ores of the Timmins area
Publication Number: MP041 Page: 157-168 Date: 1970
Author: Pyke D.R., Middleton R.S.
Publisher Name: Ontario Dept. of Mines
Location:
Article - The Kidd-Munro Extension project: synopsis of field work in the southeast Dundonald Area.
Publication Number: MP168.003 Page: 16-17 Date: 1997
Author: Barrie C.T.
Publisher Name: Ontario Geological Survey
Location:
Book - Hucamp Mines Ltd.
Publication Number: Clippings Date: 2000
Author:
Publisher Name:
Location: Timmins RGO
Mono - Report of Activities 2001, Resident Geologist Program, Timmins Regional Resident Geologist Report: Timmins and Sault Ste. Marie Districts
Publication Number: OFR6082 Page: 25-26 Date: 2002
Author: Atkinson B.T., Hailstone M.H., Seim G.Wm., Draper D.M., Farrow D.G., Hope P.
Publisher Name: Ontario Geological Survey
Location:
Publication - Geology and ore deposits of the Timmins district, Ontario (Field Trip 6); Geological Survey of Canada, Open File 2161
Publication Number: GSC OF 2161 Page: 36-45 Date: 1991
Author: Fyon, J.A. and Green, A.H.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/132290
Book - Classic Komatiite Localities and Magmatic Fe-Ni-Cu-PGE Deposits, MERC Fieldguide
Publication Number: Field Guide Date: 1999
Author: P.C. Davis (ed)
Publisher Name:
Location: Timmins RGO
Compend - Summary of Field Work and Other Activities, 2002
Publication Number: OFR6100 Page: 7.3-7.8 Date: 2002
Author: Baker C.L., Debicki E.J., Kelly R.I., Parker J.R.
Publisher Name: Ontario Geological Survey
Location:
Book - Canadian Arrow Mines Ltd. - Press Releases
Publication Number: clippings Date: 2001
Author:
Publisher Name:
Location: Timmins RGO
Article - Quaternary geology and geochemical exploration in the Matheson area
Publication Number: MP140.294 Page: 112-123 Date: 1997
Author: McClenaghan M.B., Lavin O.P., Nichol I., Shaw J.
Publisher Name: Ontario Geological Survey
Location:
Journal - CIMM 1966, TRANS VOL 69, P147-155: The Role of Sulphurization in the Genesis of Iron-Nickel Sulphide Deposits of the Porcupine District
Publication Number: Date: 1966
Author: A.J. Naldrett
Publisher Name: CIMM
Location: Timmins
Publication - Technical Report And Updated Resource Estimate On The Alexo And Kelex Deposits ,Alexo Property Timmins Area, Ontario, Canada
Publication Number: NI-43-101 Date: 2011
Author: E. Puritch, A. Hayden, A. Yassa, D. Burga
Publisher Name:
Location: Timmins RGO
Book - Komatiites 467p.
Publication Number: Date: 2008
Author: N. Arndt
Publisher Name: Cambridge University Press
Location: Timmins RGO
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