Ontario Geological Survey
Permanent Link to this Record:
MDI42C02SE00106
| Record Name(s) | Holdsworth Iron Range - 1918 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1991-Jan-08 |
| Date Last Modified | 2022-Oct-20 |
| Created By | |
| Revised By |
Primary Commodities: Sulphur/Pyrite
Secondary Commodities: Iron
Township or Area: Corbiere
Latitude: 48° 6' 36.65" Longitude: -84° 34' 56.71"
UTM Zone: 16 Easting: 679950.59 Northing: 5331373.55 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C02SE
Point Location Description: Occurrence 13 map P.2607
Location Method: Conversion from MDI
Access Description: The property is situated just north of the ACR spur line between Hawk Junction and Wawa. It is located approximately 500 m north of Pokarney Lake in the south east corner of the township. Pokarney Lake is easily accessed by walking along the railway west out of Hawk Junction.
1918:dicovery by J. Holdsworth 1919: property optioned to Algoma Steel Corporation- 22 ddh (11,498.5 ft). 1926: property sold to Grasselli Chemical Company Limited - 8 ddh (3762.5 ft). 1930: Canadian Pyrites Limited - electrical survey over property. 1983: Falconbridge Nickel Mines - 2 ddh (967.9 ft.).
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| Corbiere-0015 | 42C02SE0727 | 42C02SE0727 |
| Corbiere-0032 | 42C02SE0301 | 42C02SE0301 |
| Corbiere-0020-A1 | 42C02SE8869 | 42C02SE8869 |
| Corbiere-0016 | 42C02NE8867 | 42C02NE8867 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Tectonic Assemblage: Wawa
Geological Age: Neoarchean Geochronological Age: 2900 MA Geochron. Age Ref.: OFR 5888
Dec 07, 2005 (A Wilson) - The Holdsworth iron range has been tentatively correlated with the Kathleen Iron Range. It may represent a section of the Kathleen that has been thrust up and over the Kathleen. They cap subcycle one volcanism and mark the beginning of cycle one volcanism. The iron range is not exposed in outcrop. The original discovery was described by prospectors as black sand.
| Rock Type | Rank | Composition | Texture | Relationship | Sulphide Ironstone | 1 | Massive Sulphide | Host |
|---|---|---|---|---|
| Intermediate pillowed flow | 2 | Intermediate To Mafic | Pillowed To Massive | Hanging Wall |
| Intermediate Schist | 3 | Intermediate To Felsic | Footwall |
Dec 07, 2005 (A Wilson) - Intermediate to felsic sericite schists are found along the south side of the iron range. Along the north side the iron range is in contact with intermediate to mafic massive and pillowed metavolcanic rocks. The stratigraphy is north-facing. This iron formation lacks a carbonate facies but locally has a massive sulphied base. The upper portion of the iron formation consists of thinly bedded chert and magnetite with minor sulphide.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore |
Dec 07, 2005 (A Wilson) - The iron formation has been examined for pyrite/sulphur. Pyrite horizons have sharp contacts with the metavolcanic rocks and thin bands of metavolcanic rocks occur within the pyrite. Two drill holes completed by Falconbridge returned assays anomalous in gold and Zn (OR-4: between 104.4 and 106.0 m returned a value of 4000 ppb Au and 0.35% Zn from felsic tuff).
| Rank | Classification |
|---|---|
| 1 | Sedimentary |
| Rank | Characteristic |
|---|---|
| 1 | Concordant |
| 2 | Unknown |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 305 | 6 | 160 | 270 | 85 | 2900 MA? | OFR 5888 |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 183 | 10 | 150 | 270 | 85 | 2900 MA? | OFR 5888 |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Holdsworth Pyrite | 1926 | Unclassified | 1127316 | OFR 5587, P.264 | Sulphur/Pyrite 46.14 NA | |
| Holdsworth Pyrite | 1919 | Unclassified | 995400 | OFR 5587 P. 263 | Sulphur/Pyrite 46.31 NA |
Map - Michipicoten area, compilation sheet, District of Algoma
Publication Number: P0184 Scale: 1:126,720 Date: 1997
Author: Goodwin A.M.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological series, Precambrian geology, Corbiere Township, Algoma District
Publication Number: P2607 Scale: 1:15,840 Date: 1984
Author: Sage R.P., Calvert T., Epstein R., England D., Koscinsko K., Worona R., Oudkerk G., Inasi J., Lockwood M.B., Thomas D.
Publisher Name: Ontario Geological Survey
Location:
Folio - Corbiere Township, District of Algoma
Publication Number: GDIF297 Date: 1997
Author: Sault Ste Marie RGO
Publisher Name: Ontario Geological Survey
Location:
Publication - Michipicoten Iron Ranges; Geological Survey of Canada, Memoir 147
Publication Number: GSC Memoir 147 Page: 123-124 Date: 1926
Author: Collins, W H; Quirke, T T; Thomson, E
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100849
Mono - Pyrite deposits of Ontario
Publication Number: MDC005 Page: 29 Date: 1967
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 56 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Wawa mineral deposits data base
Publication Number: OFR5775 Page: 151 Date: 1991
Author: Frey E.D., Stewart R.C.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of Abotossaway, Corbiere, Leclaire and Musquash Townships and Part of Dunphy Township, District of Algoma
Publication Number: OFR5587 Page: 262-265 Date: 1993
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
Part - Iron deposits in the District of Algoma
Publication Number: ARV55-04.001 Page: 51 Date: 1997
Author: Moore E.S., Armstrong H.S.
Publisher Name: Ontario Dept. of Mines
Location:
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