Ontario Geological Survey
Permanent Link to this Record:
MDI42C01NW00048
| Record Name(s) | Lane Lake Zone - 1989 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2001-Apr-30 |
| Date Last Modified | 2022-Sep-07 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Cowie
Latitude: 48° 10' 50.65" Longitude: -84° 29' 29.92"
UTM Zone: 16 Easting: 686451 Northing: 5339431 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C01NW
Point Location Description: Series of shear zones north of Lane Lake
Location Method: Based on Assessment
1989-90: Corona Corporation - prospecting, mapping, ground geophysical survey, soil survey, stripping, trenching. 1991-92: Noranda Exploration Co. Ltd. - sampling, mapping, stripping, 2 ddh (186 m), IP survey. 1998: Sears et al. - mapping, ground geophysics, sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| WP Corbiere-14 | 42C06SE0002 | 42C06SE0002 |
| WP ABOTOSS.26 | ||
| WP COWIE.4 | ||
| WP.ABOTOSS.25 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Geological Age: Neoarchean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
Dec 06, 2011 (A Wilson) - The Lane Lake zones are situated near the north limit of the Forge Lake Deformation Zone. A section of intense ductile shearing follows along the north half of the Finger Lake sedimentary unit. The ductile nature of shearing may extend for 25-150 m into the mafic volcanic-gabbro sequence to the north. This gives way to a brittle-fracture style of deformation with the quartz-ankerite-pyrrhotite-arsenopyrite gold zones occurring along narrow shears and extensional fractures.
| Rock Type | Rank | Composition | Texture | Relationship | Schist-Unsubdivided | 1 | Pillowed, Chloritic | Host |
|---|---|---|---|---|
| Terrigenous-Clastic-Unsubdivided | 2 | Sheared, Siltstone | Host | |
| Gabbro | 3 | Gabbro | Near | |
| Quartz-Feldspar Porphyry | 4 | Quartz-Feldspar | Near |
Dec 07, 2005 (A Wilson) - A series of parallel Au-As zones are hosted within highly ankeritized and silicified units comprising the northern contact of the mafic-sedimentary rocks. Pillowed and massive metavolcanic rocks are prominent outside of the shear zone. The mineralized zones have been disrupted on surface through shearing and drag folding.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Gangue | ||||
| 2 | Arsenopyrite | Economic | Gangue | ||||
| 3 | Tourmaline | Economic | Gangue | ||||
| Ankerite | Alteration | Carbonatization | 1 | Strong | Replacement | ||
| Biotite | Alteration | Biotitic | 2 | Medium | Replacement |
Dec 07, 2005 (A Wilson) - Channel sampling by Corona returned assays up to 5.82 g/t Au over 10 metres. Selected grab sample results collected by Hemlo Gold Mines returned values of 5.83 g/t Au over 3 m, 2.23 g/t Au over 7 m, 4.03 g/t Au over 3 m, 2.23 g/t Au over 11.0 m, 3.21 g/t Au over 3 m, 6.98 g/t Au over 10 m, 3.5 g/t Au over 3 m and 5.25 g/t Au over 4 m. The silicified zones tend to host higher gold concentrations. Channel samples collected by Sears et al. returned values of 7.56 g/t Au over 6.8 m.
| Rank | Classification |
|---|---|
| 1 | Replacement |
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
| 2 | Vein |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Unknown | 375 | 100 | 90 | 60 |
Date: Apr 30, 2001
Geologist: A Wilson
Notes: The showing consists of 7 roughly parallel zones. The quartz-ankerite zones were developed early and are intruded by both gabbro and porphyry dikes. These intrusions displace the mineralized zones from hanging wall to foot wall and the entire sequence has been complexly folded and sheared. These zones range from 0.5 to 2.5 m in width and are disrupted by gabbro dikes. The zones display strongly silicified sections.
File - Resident Geologist files WP Abotossaway.25, WP Abotossaway.26, WP Cowie.4
Publication Number: Date:
Author:
Publisher Name:
Location: SSM RGP office
Map - Geological compilation series, Wawa sheet, districts of Algoma and Sudbury
Publication Number: P0640 Scale: 1:126,720 Date: 1997
Author: Leahy E.J., Rupert R.J., Giblin P.E., Giguere J.F.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
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