Ontario Geological Survey
Permanent Link to this Record:
MDI42E11NW00004
| Record Name(s) | Lattimer Occurrence - 9999, Legault Tp Gold Occurrence - 1991, Lattimer - 1991, Legault Township Gold Occurrence - 9999 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-12 |
| Date Last Modified | 2022-Jun-09 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Legault
Latitude: 49° 40' 1.52" Longitude: -87° 28' 31.11"
UTM Zone: 16 Easting: 465701.583 Northing: 5501725.753 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E11NW
Point Location Description: Diamond drill holes
Location Method: Conversion from MDI
Access Description: The occurrence is located in southwestern Legault Township, 0.8 km east of the township boundaries. The property is accessible by travelling east from Jellicoe on Trans Canada Highway 11 for 7.5 km and south on a bush road for 3.7 km. The occurrence is approximately 1.0 km to the west of the road.
1947: The property was staked by C. Lattimer. 1947-1950: Surface work and a diamond-drill program consisting of 9 holes (264.9 m total) were done by C. Lattimer (drilling conducted in 1949). 1957-1960: C. Lattimer performed surface work on the claim and accumulated 180 days assessment credit over the four years. 1961: Claim cancelled. 1981: Property staked by Bernhard Nelson who transferred all interests to Amoco Canada Petroleum Co. Ltd. 1982: Claims cancelled then staked by Donald Glenn Harder. 1983: Claim transferred to R.J. MacGowan. 1984: R.J. McGowan conducted mag and EM surveys. 1986: Claims presently held by R.J. McGowan.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 10 | 42E11NW0070 | 42E11NW0070 |
Province: Superior
Geological Age: Archean
Dec 07, 2005 (B Nelson) - Legault Township is underlain dominantly by Early Precambrian (Archean) metasediments and metavolcanics that form part of the Beardmore-Geraldton belt. The metavolcanics are predominantly of mafic composition and include pillowed and amygdaloidal flows. Iron formation composed of magnetite, hematite, chert and jasper is associated with thin-bedded greywacke sandstone, siltstone, and argyllite at the greywacke-mafic flow contact trending east-west across the central part of the map area. A 450 m long elliptical-shaped granitic body of trondhjemite composition intrudes mafic flows on the southern boundary of Legault Township, 2.4 km west of Colter Township. Other felsic to mafic intrusions and dykes occur throughout the map area. Major stratigraphy units are steeply dipping and have an easterly strike. A moderate to well developed east-striking schistosity is present in all the Early Precambrian (Archean) strata. Gold mineralization is associated with replacement pyrite within banded oxide iron formation. Magnetite, chert and grunerite are the principal components of the iron formation.
| Rock Type | Rank | Composition | Texture | Relationship | Sandstone | 1 | Greywacke | Near |
|---|---|---|---|---|
| Siltstone | 2 | Near | ||
| Claystone | 3 | Argillite | Near | |
| Conglomerate | 4 | Near | ||
| Mafic pillowed flow | 5 | Pillowed | Near | |
| Ironstone-unsubdivided | 6 | Mag-Hem-Ch-Jas | Host | |
| Tonalite | 7 | Trondhjemite | Near | |
| Diabase | 8 | Diabase | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Magnetite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| Quartz | Alteration | Silicification | 1 |
Dec 07, 2005 (B Nelson) - Gold mineralization is associated with replacement pyrite within banded oxide iron formation. Magnetite, chert and grunerite are the principal components of the iron formation. Magnetite occurs as coarse paralletl bands and discordant fine veinlets cutting the chert, typically recrystallized. Grunerite occurs as coarse, radiating, buff to black mineral aggregates, interlayered in mesobands with coarse anhedral pyrite. Drilling by C. Lattimer in 1949 indicated one intersection of 8.16 oz/ton Au over 0.49 m.
Date: Jan 08, 1997
Geologist: B Nelson
Notes: The Beradmore-Geraldton Economic Geologist visited the occurrence July 28, 1983.
Map - Geological series, Legault Township, District of Thunder Bay
Publication Number: P1191 Scale: 1:15,840 Date: 1976
Author: Mackasey W.O., Edwards G.R., Cape D.F.
Publisher Name: Ontario Division of Mines
Location:
Book - Sturgeon River Metavolcanic-Metasedimentary Formations in the Beardmore-Geraldton Area; In: The Precambrian Rocks of the Atikokan-Thunder Gay-Marathon Area, 24th International Geology Congress Guidebook, Field Excursion C34
Publication Number: FE C34 Date: 1972
Author: Mackasey, W.O.
Publisher Name:
Location: Thunder Bay RGP
Map - Tashota-Geraldton sheet, geological compilation series, Thunder Bay and Cochrane districts
Publication Number: M2102 Date: 1997
Author: Pye E.G., Harris F.R., Fenwick K.G., Baillie J.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Thunder Bay data series, Partridge Lake area, Thunder Bay District
Publication Number: P2518 Scale: 1:15,840 Date: 1982
Author: Love W.D.
Publisher Name: Ontario Geological Survey
Location:
Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane
Publication Number: OFR5630 Date: 1986
Author: Mason J.K., White G.D.
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
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