Ontario Geological Survey
Permanent Link to this Record:
MDI42C02SE00123
| Record Name(s) | Judith Iron Range - 1927 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-08 |
| Date Last Modified | 2022-Jun-29 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Secondary Commodities: Copper, Nickel
Township or Area: McMurray
Latitude: 48° 1' .15" Longitude: -84° 40' 8.71"
UTM Zone: 16 Easting: 673814.54 Northing: 5320786.04 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C02SE
Point Location Description: Iron formation northwest of Shook Lake
Location Method: Conversion from MDI
Access Description: Travel east on highway 101 from Wawa for approximately 12 km to the Firesand Creek turnoff. Drive south along the Firesand Creek road to the gravel pit (approximately 1.5 km). From here traverse west approximately 2 km to the iron formation.
Pre-1927: pitting and trenching. 1951: Soulier et al. - S. P. survey. 1952: Jalore Mining Company - 3 ddh.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| ESQUEGA 14C1 | 42C02SE0025 | 42C02SE0025 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Tectonic Assemblage: Hawk Lake
Geological Age: Neoarchean Geochronological Age: 2900MA Geochron. Age Ref.: OFR 5888
Dec 07, 2005 (A Wilson) - The Judith Iron Range is believed to be the western extension of the Kathleen Iron Range. The Judith-Kathleen iron formation caps the intermediate to felsic metavolcanic rocks of the 2900 Ma cycle of volcanism. The Judith iron range occurs at the soouthwest end of the iron formation in McMurray Tp. and the Kathleen Iron Range is located at the northeast end in Esquega Township. Numerous discontinuous unnamed segments of iron formation occur at the equivalent stratigraphic position between the two iron ranges.
| Rock Type | Rank | Composition | Texture | Relationship | Sulphide Ironstone | 1 | Sulphide Facies | Host |
|---|---|---|---|---|
| Mafic pillowed flow | 2 | Pillowed | Hanging Wall | |
| Intermediate lava flow-unsubdivided | 3 | Dacite To Andesite | Footwall |
Dec 07, 2005 (A Wilson) - The northern part of the iron formation consists of thin bedded laminated grey to black chert. The southern part of the iron formation consists of sulphide-facies iron formation which is locally massive. The iron formation faces north based on the topping direction of local pillows.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore |
Dec 07, 2005 (A Wilson) - The gossan reportedly contained 34.67% Fe, 31.60% Si. Five feet of sulphides, mainly pyrrhotite with minor pyrite, reportedly assay 0.09% Cu and 0.38% Ni from a Jalore diamond drill hole.
| Rank | Classification |
|---|---|
| 1 | Sedimentary |
| Rank | Characteristic |
|---|---|
| 1 | Massive |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 1220 | 60 | 35 | 2900 MA | OFR 5888 |
Book - EXPL RPT - ESQUEGA 0014-C1
Publication Number: N/A Date: 1996
Author:
Publisher Name:
Location: Timmins RGP
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 compilation series, Wawa sheet, districts of Algoma and Sudbury
Publication Number: P0640 Scale: 1:126,720 Date: 1997
Author: Leahy E.J., Rupert R.J., Giblin P.E., Giguere J.F.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Mono - Wawa mineral deposits data base
Publication Number: OFR5775 Page: 271 Date: 1991
Author: Frey E.D., Stewart R.C.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, McMurray Township and parts of surrounding townships, formerly Township 29, Range 23, District of Algoma
Publication Number: P0828 Scale: 1:15,840 Date: 1973
Author: Rupert R.J.
Publisher Name: Ontario Division of Mines
Location:
MonoMap - Geology of Chabanel, Esquega, Lastheels and McMurray Townships, District of Algoma
Publication Number: OFR5586 Page: 450 Date: 1993
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Precambrian geology of McMurray Township, Wawa area, Algoma District
Publication Number: P2441 Scale: 1:15,840 Date: 1982
Author: Sage R.P., Sawitzky E., Turner J., Leeselleur P., Sagle E.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of McMurray Township and parts of surrounding townships, District of Algoma
Publication Number: OFR5283 Page: 141-142 Date: 1979
Author: Rupert R.J.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Michipicoten Greenstone Belt, Central Portion
Publication Number: P3303 Scale: 1:50,000 Date: 1994
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of Michipicoten Greenstone Belt
Publication Number: OFR5888 Page: 69-70 Date: 1994
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Sault Ste. Marie Resident Geologist District Office