Ontario Geological Survey
Permanent Link to this Record:
MDI42C13SE00016
| Record Name(s) | Dotted Lake - 1988 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1996-Dec-16 |
| Date Last Modified | 2022-May-18 |
| Created By | |
| Revised By |
Primary Commodities: Granite
Township or Area: White Lake Area
Latitude: 48° 51' 45.17" Longitude: -85° 44' 29.77"
UTM Zone: 16 Easting: 592294.42 Northing: 5412939.49 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42C13SE
Point Location Description: Outcrop
Location Method: Data Compilation
Access Description: GENERAL LOCATION: The property is located 31 km south of the town of Manitouwadge off Highway 614 on the Dotted Lake-Twist Lake road and 1 km southeast of Dotted Lake. ACCESS: Highway 614 north from Highway 17 for 12.5 km. Take the Dotted Lake-Twist Lake road east of the highway for 9.5 km. Large outcrops can be seen on both sides of the road for approximately 1 to 2 km.
1988 This area was previously staked by Calicchia Stone Industries of Cleveland, Ohio. Samples were taken for slabbing and polishing. No further work was conducted. 1992 A. Turner of Manitouwadge restaked the area. 1993 A. Turner carried out stripping, etc.
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Geological Age: Archean
Dec 07, 2005 (W Bellinger) - GENERAL GEOLOGY AND STRUCTURE: The area is underlain by Precambrian rocks of the Abitibi-Wawa subprovince. The Dotted Lake batholith is a leucogranodiorite which intruded mafic metavolcanics. The body is described in detail by Milne (1968): No inhomogenity was noted in the main mass of the Dotted Lake Batholith, which appears to consist throughout of biotite leucogranodiorite. The typical rock is light-pink to white in colour, massive, coarse grained, and inequigranular, and has about 3 percent mafic minerals. Biotite is the only mafic mineral visible in handspecimen with quartz and feldspar and occasionally epidote. The granodiorite is intrusive into the metavolcanic rocks with sharp contacts, and generally the granodiorite in the contact area is slightly finer grained and darker in colour than in the main mass of granodiorite. JOINTING: Joint spacings on some portions of the outcrops were greater than 2 m apart while other areas displayed zones of extensive fracturing.
| Rock Type | Rank | Composition | Texture | Relationship | Granodiorite | 1 | Leocogranodiorite | Eguigranular,Coarse-Gr. | Host |
|---|
Dec 07, 2005 (W Bellinger) - COLOUR: Polished samples revealed an attractive pink to grey colour. TEXTURE: The stone is coarse grained and equigranular. The body is described in detailby Milne (1968): No inhomogenity was noted in the main mass of the Dotted Lake Batholith, which appears to consist throughout of biotite leucogranodiorite. The typical rock is light-pink to white in colour, massive, coarse grained, and inequigranular, and has about 3 percent mafic minerals. Biotite is the only mafic mineral visible in handspecimen with quartz and feldspar and occasionally epidote. The granodiorite is intrusive into the metavolcanic rocks with sharp contacts, and generally the granodiorite in the contact area is slightly finer grained and darker in colour than in the main mass of granodiorite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Plagioclase | Economic | Ore | ||||
| 2 | Quartz | Economic | Ore | ||||
| 3 | Microcline | Economic | Ore | ||||
| 1 | Biotite | Economic | Gangue | ||||
| 2 | Magnetite | Economic | Gangue | ||||
| 3 | Epidote | Economic | Gangue | ||||
| Epidote | Alteration | Epidotization | 1 | Weak | Replacement |
Dec 07, 2005 (W Bellinger) - MINERALOGY: Primary mineral constituents are plagioclase feldspar, quartz, potassium feldspar and biotite with trace magnetite. COLOUR: Polished samples revealed an attractive pink to grey colour. TEXTURE: The stone is coarse grained and equigranular.
File - Industrial minerals geologist files
Publication Number: IMF Date: 1996
Author:
Publisher Name:
Location: Thunder Bay RGP
Map - Dotted Lake sheet, Thunder Bay District
Publication Number: M2146 Scale: 1:31,680 Date: 1968
Author: Milne V.G.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Dimensional Stone Occurrences and Deposits in Northwest Ontario
Publication Number: OFR5890 Page: 111-114 Date: 1994
Author: Hinz P., Landry R.M., Gerow M.C.
Publisher Name: Ontario Geological Survey
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office
Publication Number: Min Dep Date: 1996
Author:
Publisher Name:
Location: Thunder Bay RGP
Map - Geological series, Precambrian geology, Lumby Lake area, western part, Kenora District
Publication Number: P2828 Scale: 1:15,840 Date: 1985
Author: Jackson M.C., Chevalier P.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Black River area, District of Thunder Bay
Publication Number: R072 Date: 1968
Author: Milne V.G.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological series, Precambrian geology, White Lake (Hemlo) area, Dotted Lake and Black River sections, District of Thunder Bay
Publication Number: P3046 Scale: 1:15,840 Date: 1986
Author: Siragusa G.M., Chivers K.M.
Publisher Name: Ontario Geological Survey
Location:
Map - White Lake sheet, Thunder Bay District
Publication Number: M2147 Scale: 1:31,680 Date: 1968
Author: Milne V.G.
Publisher Name: Ontario Dept. of Mines
Location:
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