Ontario Geological Survey
Permanent Link to this Record:
MDI52P03SW00003
| Record Name(s) | Greenmantle Lake - 1985, Arrowsmith - 1985 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1985-Jul-29 |
| Date Last Modified | 2022-Jul-14 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Township or Area: Greenmantle Lake Area
Latitude: 51° 6' 4.21" Longitude: -89° 16' 44.16"
UTM Zone: 16 Easting: 340444.97 Northing: 5663545.62 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52P03SW
Point Location Description: Precise
Location Method: Conversion from MDI
1962: Magnetometer survey and diamond drilling by Standard Iron Mines. 1966: Diamond drilling by Algoma Steel.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 52P03SW0014 | 52P03SW0001 | 52P03SW0001 |
| 52P03SW0012A1 | 52P03SW0008 | 52P03SW0008 |
| 52P03SW0012B1 | 52P03SW0009 | 52P03SW0009 |
| 52P03SW0012C1 | 52P03SW0005 | 52P03SW0005 |
| 52P03SW0013A1 | 52P03SW0004 | 52P03SW0004 |
| 52P03SW10B1 | 52P03SW9623 | 52P03SW9623 |
Province: Superior
Subprovince: English River
Geological Age: Neoarchean
Nov 09, 2006 (Mark Puumala) - This occurrence is described by Shlanka (1968) as an iron formation comprised of quartz, muscovite, biotite and differing amounts of magnetite (up to 70%) and hematite (up to 15%). The magnetite occurs as disseminated grains or in bands up to 2 m wide. The iron formation occurs within a migmatitic complex and ranges from 90 to 300 m wide. This occurrence is located in a similar setting to that found nearby at Heart Attack Lake (Sage and Breaks 1982).
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Is |
|---|---|---|---|---|
| Diatexite Migmatite | 2 | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Hematite | Economic | Ore | ||||
| 10 | Magnetite | Economic | Ore |
Nov 09, 2006 (Q Unknown) - DEPTH - GRADE - 1982: OGS CHIP SAMPLE (22 KG) ASSAYS 33.4% FE2O3 AND 8.89% FEO.
| Rank | Classification |
|---|---|
| 1 | Sedimentary |
| Rank | Characteristic |
|---|---|
| 1 | Stratiform |
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 452 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Cat Lake-Pickle Lake area, districts of Kenora and Thunder Bay
Publication Number: R207 Page: 170, 173-174 Date: 1982
Author: Sage R.P., Breaks F.W.
Publisher Name: Ontario Geological Survey
Location:
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