Ontario Geological Survey
Permanent Link to this Record:
MDI52A11SW00010
| Record Name(s) | Trout Lake Pluton - 1996 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1996-Dec-15 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Granite
Township or Area: Ware
Latitude: 48° 36' 50.17" Longitude: -89° 24' 45.23"
UTM Zone: 16 Easting: 322185.836 Northing: 5387349.971 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A11SW
Point Location Description: Outcrop
Location Method: Data Compilation
Access Description: GENERAL LOCATION: The pluton is located approximately 26 km north of Thunder Bay. The bulk of the pluton lies within Ware Township (Lots 1 to 8, Conc. IV to VIII). ACCESS: Access to the pluton is gained via Mapleward Road and Highway 591. Starting at Hwy. 102 (Dawson Rd.) travel north on Mapleward Road for approximately 10 km. At this point the road changes to Hwy. 591 (Figure 14). The eastern portion of the pluton is reached 1.2 km past this point. Access to the remainder of the area can be gained via logging roads that exit Hwy. 591. These roads provide access to the boundary of the pluton; access to the centre is limited.
This pluton has had minimal prospecting and exploration activity within it. 1994 For the most part the pluton is covered by patented land with both surface and mineral rights reserved. However, in the west central portion of the pluton there is 3.2 km2 which is crown land.
Province: Superior
Geological Age: Archean
Dec 07, 2005 (W Bellinger) - GENERAL GEOLOGY AND STRUCTURE: The pluton has intruded Archean pelitic to semi-pelitic metasediments. The pluton itself is a pink hornblende granite that is uniformly porphyritic, with feldspar phenocrysts up to 2.5 cm in length. The majority of outcrops examined show irregular orientation and spacing in the joint sets. In most cases the spacing is <1 m. Fractures are very common. COLOUR: On the weathered surface the granite appears pink (the penetration of the weathering is 1 to 2 cm). The fresh surface is a brick red colour with phenocrysts that are white to salmon pink in colour. The colour is consistent throughout most of the pluton except in the northern part where it varies from pink to greyish pink to grey. TEXTURE: The texture is inconsistent over areas of the pluton. Patches of fine-grained or pegmatitic granitic material are common. Overall, the stone is medium to coarse grained with phenocrysts up to 2 cm in length. OTHER FEATURES: Xenoliths of fine-grained mafic material or fine-grained red granitic material are common. There are also occurrences of aplitic dikes and quartz veins in the northern portion of the pluton. Evidence of faulting (slickensides) are noted in outcrops near Hwy. 591 JOINTING: The majority of the outcrops examined show irregular orientation and spacing in the joint sets. In most cases the spacing is <1 m. Fractures are vey common.
| Rock Type | Rank | Composition | Texture | Relationship | Granite | 1 | Hornblende Granite | Med To Coarse Gr. - Porphyritic | Host |
|---|
Dec 07, 2005 (W Bellinger) - The majority of outcrops examined show irregular orientation and spacing in the joint sets. In most cases the spacing is <1 m. Fractures are very common. COLOUR: On the weathered surface the granite appears pink (the penetration of the weathering is 1 to 2 cm). The fresh surface is a brick red colour with phenocrysts that are white to salmon pink in colour. The colour is consistent throughout most of the pluton except in the northern part where it varies from pink to greyish pink to grey. TEXTURE: The texture is inconsistent over areas of the pluton. Patches of fine-grained or pegmatitic granitic material are common. Overall, the stone is medium to coarse grained with phenocrysts up to 2 cm in length. OTHER FEATURES: Xenoliths of fine-grained mafic material or fine-grained red granitic material are common. There are also occurrences of aplitic dikes and quartz veins in the northern portion of the pluton. Evidence of faulting (slickensides) are noted in outcrops near Hwy. 591 JOINTING: The majority of the outcrops examined show irregular orientation and spacing in the joint sets. In most cases the spacing is <1 m. Fractures are vey common.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Feldspar | Economic | Ore | ||||
| 2 | Quartz | Economic | Ore | ||||
| 3 | Hornblende | Economic | Ore |
Dec 07, 2005 (W Bellinger) - The majority of outcrops examined show irregular orientation and spacing in the joint sets. In most cases the spacing is <1 m. Fractures are very common. COLOUR: On the weathered surface the granite appears pink (the penetration of the weathering is 1 to 2 cm). The fresh surface is a brick red colour with phenocrysts that are white to salmon pink in colour. The colour is consistent throughout most of the pluton except in the northern part where it varies from pink to greyish pink to grey. TEXTURE: The texture is inconsistent over areas of the pluton. Patches of fine-grained or pegmatitic granitic material are common. Overall, the stone is medium to coarse grained with phenocrysts up to 2 cm in length. OTHER FEATURES: Xenoliths of fine-grained mafic material or fine-grained red granitic material are common. There are also occurrences of aplitic dikes and quartz veins in the northern portion of the pluton. Evidence of faulting (slickensides) are noted in outcrops near Hwy. 591 8) PHYSICAL PROPERTIES: Trout Lake Granite Compressive Strength: 19,473 psi (134.31 MPa). Modulus of Rupture: 1,138 psi (7.87 MPa). Absorption: 0.21%. Bulk Specific Gravity: 2.68. Testing conducted by Geoscience Laboratories, Ontario Geological Survey, Toronto 9) CHEMICAL ANALYSIS: Sample No.85MCK-0001: 67.60 SiO2, 16.34 Al2O3, 3.81 Fe2O3, 0.06 MnO, 1.95 MgO, 0.99 CaO, 4.18 Na2O, 4.44 K2O, 0.53 TiO2, 0.23 P2O5. Analyses by Geoscience Laboratory, Ontario Geological Survey, Toronto.
Map - Gorham Township and vicinity, District of Thunder Bay, Ontario
Publication Number: ARM48C Scale: 1:63,360 Date: 1997
Author: Macdonald R.D.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Dimensional Stone Occurrences and Deposits in Northwest Ontario
Publication Number: OFR5890 Date: 1994
Author: Hinz P., Landry R.M., Gerow M.C.
Publisher Name: Ontario Geological Survey
Location:
Article - Geology and Mineral Potential of Ware Township, District of Thunder Bay
Publication Number: MP162.052 Date: 1993
Author: Brown G.H., Fogal R.I.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological compilation series, Lakehead-Shebandowan sheet, District of Thunder Bay
Publication Number: P0177 Scale: 1:126,720 Date: 1997
Author: Pye E.G., Fenwick K.G.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Geology of Gorham Township and vicinity
Publication Number: ARV48-03 Date: 1998
Author: Macdonald R.D.
Publisher Name: Ontario Dept. of Mines
Location:
File - Industrial minerals geologist files
Publication Number: IMF Date: 1996
Author:
Publisher Name:
Location: Thunder Bay RGP
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