Ontario Geological Survey
Permanent Link to this Record:
MDI31L14SW00013
| Record Name(s) | Green Lake Prospect - 1966, Iron City Mines Property - 1966 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1980-May-14 |
| Date Last Modified | 2023-Jan-06 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Secondary Commodities: Nickel
Township or Area: Parkman
Latitude: 46° 48' 29.2" Longitude: -79° 14' 27.16"
UTM Zone: 17 Easting: 634215 Northing: 5185343 UTM Datum: NAD83
Resident Geologist District: Sudbury
NTS Grid: 31L14SW
Point Location Description: General
Location Method: Based on Assessment
Access Description:
1966-1970: Iron City Mines Ltd. – ground geophysics, DD, radiometric survey, trenching. 2003-004: Grenville Gold Corporation – airborne geophysics, DD
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| Parkman SP-004 / 63.2400 | 31L14SW0007 | 31L14SW0007 |
| Parkman SP-004 / 31L14SW0003 | 20000004833 | 20000004833 |
| 2.220 | 31L14SW0006 | 31L14SW0006 |
| Parkman SP-014 / 2.25342 | 31L14SE2007 | 31L14SE2007 |
| 10 | 31L13SE0003 | 31L13SE0003 |
| W6908-00201 | 31L14SE5001 | 31L14SE5001 |
| 63.2637 | 31L14SW0005 | 31L14SW0005 |
Province: Grenville
Subprovince: Central Gneiss Belt
Terrane: Tomiko
Geological Age: Mesoproterozoic Geochronological Age: 1250 MA Geochron. Age Ref.: OFR5554
| Rock Type | Rank | Composition | Texture | Relationship | Gneiss-Unsubdivided | 1 | Contains |
|---|---|---|---|---|
| Ironstone-unsubdivided | 2 | Is |
Aug 10, 2012 (A Wilson) - On the Iron City Mines Ltd. property iron occurs mainly as an oxide (soluble magnetic iron) in highly metamorphosed Grenville metasediments, interbedded ortho- and para-gneisses, in a large fold, several miles in length. Two southeast trending anomalous zones have been identified. The south zone dips moderately to the northeast and the north zone dips steeply to the northeast. Drilling on the south zone intersected approximately 164 m of interbedded iron formation and gneisses with the gneisses making up 50-75% of the total. Drilling on the north zone intersected 45.4 m of interbedded iron formation and gneisses of which 29.1 m represented iron formation.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Hematite | Economic | Ore | ||||
| 2 | Magnetite | Economic | Ore |
Aug 10, 2012 (A Wilson) - Sampled intersections from the south zone range from 10.5% soluble Fe over 3.8 m to 34.8% Fe over7.5 m. The north zone averaged 24.2% combined soluble Fe plus Mn. Typical Mn values ranged from 1.84% to 5.48% over 6 m. A 3 inch section of drill core also assayed 0.084% Ni. Assays of the Green Lake zone, performed at the Ontario Department of Mines, ranged from 9.1 to 36.7%, with an approximate average of 21.1% soluble iron. Analyses of the Cook zone showed an average of 13.3% soluble iron. Average manganese content in the Green Lake zone was 4.1% on the north limb, with a high of 7.8%.
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 762 |
Map - Precambrian Geology, Jocko River Area
Publication Number: P2846 Scale: 1:50,000 Date: 2006
Author: Easton R.M.
Publisher Name: Ontario Geological Survey
Location:
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 272 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology and Mineral Potential of the Eastern Tomiko Terrane, Grenville Province
Publication Number: OFR5554 Page: 66 Date: 2006
Author: Easton R.M.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Tomiko area (east half), District of Nipissing
Publication Number: P0679 Scale: 1:63,360 Date: 1997
Author: Lumbers S.B.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
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 Sudbury Resident Geologist District Office