Ontario Geological Survey
Permanent Link to this Record:
MDI42C07SE00043
| Record Name(s) | Rutledge (Dreany) Iron Range - 1953 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-08 |
| Date Last Modified | 2022-May-18 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Township or Area: Abotossaway
Latitude: 48° 16' 15.03" Longitude: -84° 38' 19.89"
UTM Zone: 16 Easting: 675201.02 Northing: 5349098.6 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C07SE
Point Location Description: Occurrence 42, compilation map 1 OFR 5587
Location Method: Conversion from MDI
Access Description: The occurrence is accessible by boat from the north end of the Magpie River Reservoir.
1953: Algoma Ore Properties: mapping.
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Geological Age: Neoarchean Geochronological Age: 2700 MA Geochron. Age Ref.: OFR 5888
Dec 07, 2005 (A Wilson) - The Rutledge (Dreany) Iron Range occurs at the break between intermediate to mafic and intermediate to felsic volcanism of the 2700 Ma volcanic cycle. For most of it's length it occurs at the base of the Dore metasedimentary rocks. This iron range is unusual in that it does not mark the termination of a volcanic cycle. It may consist of two or three subparallel iron formations. Many of the outcrops mapped in the 1950's have presumably been flooded, and the iron range has been geophysically interpreted in this region.
| Rock Type | Rank | Composition | Texture | Relationship | Magnetite Ironstone | 1 | Chert-Magnetite | Host |
|---|
Dec 07, 2005 (A Wilson) - The iron range reportedly consists of fine granular chert and magnetite. In places grunerite was reported within the iron formation.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Magnetite | Economic | Ore | ||||
| 1 | Grunerite | Economic | Gangue |
Dec 07, 2005 (A Wilson) - Assay results from a 1953 chip sample over the width of the formation reportedly returned values of 22.85% Fe, 62.60% Si, 0.010% S and 0.037% Ph.
| Rank | Classification |
|---|---|
| 1 | Sedimentary |
| Rank | Characteristic |
|---|---|
| 1 | Concordant |
| 2 | Layered |
| 3 | Stratiform |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 1525 | 35 | 45 | 85 | 2700 MA | OFR 5888 |
Book - Abotossaway Township - unpublished GDIF
Publication Number: GDIF Date: 1985
Author: Resident Geologist Staff
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 - Manitouwadge-Wawa sheet, geological compilation series, Algoma, Cochrane, Sudbury and Thunder Bay districts
Publication Number: M2220 Scale: 1:253,440 Date: 1972
Author: Milne V.G., Giblin P.E., Bennett G., Thurston P.C., Wolfe W.J., Giguere J.F., Leahy E.J., Rupert R.J.
Publisher Name: Ontario Division of Mines
Location:
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 60 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Precambrian Geology, Abotossaway Township
Publication Number: OFM0223 Scale: 1:15,840 Date: 1993
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
Mono - Wawa mineral deposits data base
Publication Number: OFR5775 Page: 111 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 Date: 1993
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of Michipicoten Greenstone Belt
Publication Number: OFR5888 Page: 52-54 Date: 1994
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
Publication - Michipicoten Iron Ranges; Geological Survey of Canada, Memoir 147
Publication Number: GSC Memoir 147 Page: 100 Date: 1926
Author: Collins, W H; Quirke, T T; Thomson, E
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100849
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: 126 Date: 1985
Author: Rose, D. G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
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