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Ontario Geological Survey
Permanent Link to this Record:
MDI000000001253
| Record Name(s) | Big Jim Property - 1902, Orebody C - 1952 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 2011-May-31 |
| Date Last Modified | 2022-Feb-22 |
| Created By | |
| Revised By |
Primary Commodities: Magnetite
Township or Area: Grattan
Latitude: 45° 26' 38.74" Longitude: -77° 1' 46.21"
UTM Zone: 18 Easting: 341285.004 Northing: 5034289.001 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F06NE
Point Location Description: approximate location of iron formation
Location Method: Data Compilation
1901-1902 : Canada Iron Furnace Company: DD, surface mining. 1950: Algoma Ore Properties Limited - mapping, ground geophysics, DD
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Gneiss-Unsubdivided | 1 | Hornblende-Plagioclase | Contains |
|---|---|---|---|---|
| Feldspathic Wacke | 2 | Feldspathic Arenite | Host | |
| Granite | 3 | Granite | Intrudes | |
| Syenite | 4 | Syenite | Intrudes | |
| Anorthosite | 5 | Intrudes |
Jun 02, 2011 (A Wilson) - A long sinuous band of gneiss is included within metamorphosed feldspathic arenite. Both are cut by pegmatitic granite and coarse syenite dikes, some of which are 25 feet wide. Ore-grade mineralization is found in the arenite. The arenite is gently folded and the fold axis plunges at 30° and trends S23W. Shearing was observed in the northern part of the deposit and is characterized by non-coherent hornblende-plagioclase gneiss containing lenses of unsheared rock.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Magnetite | Economic | Ore |
Jun 02, 2011 (A Wilson) - A grab sample collected from the ore dump by the OGS in 1978, returned 44.2% Fe (tot), 42.5% Fe (sol), 20.8% FeO, 1.84% TiO2, 0.14% P2O5, <0.01% S, 0.12% Mn and 0.11% V. Mineralization consists of fine-grained magnetite occurring as disseminated-to-massive layers within amphibolite. The mineralization is completely conformable within the amphibolite.
| Rank | Characteristic |
|---|---|
| 1 | Concordant |
| 2 | Disseminated |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 640 | 4.5 | MRC020 p.99 |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1901 | 163 |
Magnetite |
AR11 p 259 | approximately 180 tons mined in 1901 |
Part - Mines of eastern Ontario
Publication Number: ARV12.007 Scale: Date: 1998
Author: Carter W.E.H.
Publisher Name: Ontario Bureau of Mines
Location:
Part - The mines of Ontario
Publication Number: ARV11.016 Scale: Date: 1998
Author: Carter W.E.H.
Publisher Name: Ontario Bureau of Mines
Location:
Mono - Report Of The Ontario Iron Ore Committee With Appendix 1923
Publication Number: NSP013 Scale: Date: 1998
Author:
Publisher Name:
Location:
Part - Mineral occurrences in the Renfrew area
Publication Number: ARV53-03 Scale: Date: 1998
Author: Satterly J.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Iron deposits of Ontario
Publication Number: MDC011 Scale: Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological series, base and precious metals, iron and molybdenum deposits of Pembroke-Renfrew area, southern Ontario
Publication Number: P2211 Scale: 1:126,720 Date: 1979
Author: Carter T.R., Storey C.C.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of base metal, precious metal, iron, and molybdenum deposits in the Pembroke-Renfrew area
Publication Number: MDC020 Scale: Date: 1980
Author: Carter T.R., Colvine A.C., Meyn H.D.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Clontarf area, Renfrew County
Publication Number: R209 Scale: Date: 1981
Author: Themistocleous S.G.
Publisher Name: Ontario Geological Survey
Location:
Map - Clontarf, Renfrew County
Publication Number: M2433 Scale: 1:31,680 Date: 1980
Author: Themistocleous S.G.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office