Ontario Geological Survey
Permanent Link to this Record:
MDI42E10NW00021
| Record Name(s) | Lafayette Longlac Occurrence - 1935, Lafayette Long Lac North - 1935 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1991-Jan-11 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Errington
Latitude: 49° 43' 4.74" Longitude: -86° 57' 50.09"
UTM Zone: 16 Easting: 502601.212 Northing: 5507276.136 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E10NW
Point Location Description: Diamond drill holes
Location Method: Conversion from MDI
Access Description: The property is located in east central Errington Township, immediately west of Geraldton. The eastern claims of the block are included within the boundary of the area assigned to the corporation of the town of Geraldton. A road constructed in the mid-forties provides access to the property from the town of Geraldton.
1934: Claims comprising the property were staked by several individuals. 1935: All 11 claims were transferred to H.J Martin of Lafayette Longlac Gold Mines Ltd. Surface mapping and trenching was performed on the claim group. 1945: After a number of extensions, and after the claims had been cancelled and reinstated, the remaining 9 claims were patented. Seven holes totalling 3,230 m were drilled such that the north-south boundary of Lafayette Longlac Gold Mines Ltd. and Marquette Longlac Gold Mines Ltd. was sectioned. This work was financed jointly by the two companies. 1947: The company was listed as inactive in the Canadian Mines Handbook (1947). 1957: The company acquired 10 patented claims in Errington Township. 1958: Lafayette Longlac was inactive but held 20 patented claims. 1964: The company charter was cancelled. 1986: Claims under patent as part of the Barker estate.
Province: Superior
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The Lafayette claims are underlain by lavas and tuffs intruded by sills of diorite. For the most part, the lavas are of andesitic character, but acidic varieties, approaching rhyolite in composition, occur in a few places. In the few coutcrops found by surface mapping, they are generally massive. Vestiges of amygdaloidal and pillow structures are evident locally, and in the large outcrop on claim TB13099, well-developed pillows have been observed, the tops of which face north. Interbanded with the lavas in several places are narrow beds of volcanic breccia. Highly sheared and altered phases of this rock type are exposed on the north and south side of the large outcrop mentioned above. Toward the north side of the diorite-greenstone complex, the lavas are interbanded with narrow beds of Keewatin sediments, which grade from slates through greywackes to pebble conglomerates. A bed of banded iron formation was also intersected in a drill program. Quartz veins of limited lateral extent have been located in shear zones along the contact between the lavas and diorites. These veins contain considerable carbonate and frequently small amounts of pyrite and pyrrhotite. No major shear zones were indicated in the iron formation, but mineralized quartz veins and zones of silicification were frequently found along bedding planes in the metasediments up to several feet in width.
| Rock Type | Rank | Composition | Texture | Relationship | Diorite | 1 | Diorite | Near |
|---|---|---|---|---|
| Intermediate lava flow-unsubdivided | 2 | Andesite | Host | |
| Felsic lava flow-unsubdivided | 3 | Rhyolitic | Pillow Vestiges | Host |
| Breccia-unsubdivided | 4 | Sheared | Near | |
| Sandstone | 5 | Greywacke | Near | |
| Conglomerate | 6 | Near | ||
| Ironstone-unsubdivided | 7 | Near | ||
| Vein | 8 | Quartz | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | ||||
| Carbonate | Alteration | Unknown | 2 |
Dec 07, 2005 (B Nelson) - During the cross sectional drilling done by Lafayette Longlac Gold Mines Ltd. and Marquette Longlac Gold Mines Ltd. in 1945, values were predominantly trace and 0.01 oz/ton Au, with one sample assaying 1.0 oz/ton Au.
File - Resident Geologist files AFRO 1935-46, Errington Township
Publication Number: Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Map - Little Long Lac gold area, District of Thunder Bay, Ontario
Publication Number: ARM44D Scale: 1:31,680 Date: 1997
Author: Bruce E.L.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Compilation series, Geraldton sheet, Thunder Bay and Cochrane districts
Publication Number: P0241 Scale: 1:126,720 Date: 1984
Author: Stott G.M., McConnell C.D., Mason J.K.
Publisher Name: Ontario Geological Survey
Location:
Map - Township of Errington, District of Thunder Bay, Ontario
Publication Number: M1951-07 Scale: 1:12,000 Date: 1997
Author: Horwood H.C., Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Little Long Lac gold area
Publication Number: ARV44-03 Date: 1997
Author: Bruce E.L.
Publisher Name: Ontario Dept. of Mines
Location:
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:
Part - Geology of Errington Township, Little Long Lac area
Publication Number: ARV60-06 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Thunder Bay data series, Geraldton area, Thunder Bay District
Publication Number: P2520 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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