Ontario Geological Survey
Permanent Link to this Record:
MDI42C08SW00189
| Record Name(s) | North Shear Zone - 1997 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 2002-Jun-19 |
| Date Last Modified | 2022-Oct-18 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Finan
Latitude: 48° 17' 35.01" Longitude: -84° 25' 59.33"
UTM Zone: 16 Easting: 690381.41 Northing: 5352058.01 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C08SW
Point Location Description: Zone defined by drilling approximately 150 m NW of Goudreau Lake
Location Method: Data Compilation
Access Description: Access is via an 18 km all-weather gravel road that turns off of highway 519 just west of the town of Dubreuilville. Dubreuilville is on highway 519, 44 km east of the junction of Highway 17 and 519. The mine access road is located approximately 2 km east of the junction of the new Goudreau Road and the old Goudreau Road.
1997-2004: Particia Mining Corp. - sampling, diamond drilling (16+ ddh), ground geophysics, mapping.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| WP FINAN.77 | 42C08SW2026 | 42C08SW2026 |
| WP Finan-69 | 42C08SW2020 | 42C08SW2020 |
| WP Finan-67 | 42C08SW2018 | 42C08SW2018 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Tectonic Assemblage: Wawa
Geological Age: Neoarchean Geochronological Age: 2750 MA Geochron. Age Ref.: GOO VOL 1
Dec 07, 2005 (A Wilson) - The showing straddles the boundaries between the Northern and Southern Domains of the Goudreau Lake Deformation Zone. The GLDZ is up to 4.5 km in width and strikes in a gentle sigmoid-form for at least 30 km, subparallel to the stratigraphy and the regional foliation. In the immediate Goudreau-Lochalsh area, the GLDZ is coincident with a major contact between Cycle 2 and Cycle 3 volcanics. There is a strong structural control of the gold-bearing quartz veins systems within each of the 070-075 striking high-strain zones within the deformation zone. The deposit is hosted by the same shear zone hosting the Magino Deposit. The Southern Domain is composed on an 70 degree striking, ductile-brittle zone of subparallel, dextral oblique-slip, high strain zones developed within strongly altered and deformed felsic to intermediate metavolcanic rocks. The southern domain is approximately 8 km long by 2 km wide.
| Rock Type | Rank | Composition | Texture | Relationship | Felsic lava flow-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Granodiorite | 2 | Near | ||
| Quartz-Feldspar Porphyry | 3 | Quartz-Feldspar | Host |
Dec 07, 2005 (A Wilson) - The North Shear is hosted in strongly deformed quartz-feldspar porphyry and felsic metavolcanics on the north margin of the Webb Lake Stock. The shear structure has a width of approximately 15 m and is characterized by gold mineralization associated with strong sericite, chlorite, carbonate, pyrite and silica alteration.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Chalcopyrite | Economic | Gangue | ||||
| 3 | Tourmaline | Economic | Gangue | ||||
| Sericite | Alteration | Sericitization | 1 | Strong | Replacement | ||
| Ankerite | Alteration | Carbonatization | 2 | Strong | Replacement | ||
| Chlorite | Alteration | Chloritic | 3 | Medium | Replacement |
Dec 07, 2005 (A Wilson) - A 1997 drill hole included an intersection of 6.4 g/t Au over 10.8 m. An intersection in a 2000 diamond drill hole returned 1.0 m at 8.09 g/t Au. Intersection in hole PL-17 returned 10.8 g/t Au over 5.46 m. The high grade 21 Zone intersection of 19 m at 52.18 g/t Au occurs in the hanging wall of the North Shear. Intersections from the 2001 diamond drilling program returned values ranging from 3.75 g/t Au over 1.9 m to 80.58 g/t Au over 0.5 m.
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 3000 | 40 | 70 |
Date: Jan 19, 2005
Geologist: A Wilson
Notes: The North Shear Structure is marked by a persistent brittle shearing deformation consisting of en-echelon quartz-tourmaline stringer veining and stockworks containing visible gold, minor pyrite and trace chalcopyrite. Rocks within the zone are often highly strained, crenulated, silicified and sericitized. The quartz-tourmaline veining occurs within the central to northern portion of the Webb Lake sill, trending sub-parallel and locally transgressing formation contacts that dip at approximately 80 N.
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Centre Zones | 2002 | Unclassified | 2521406 | Patricia Mining Corp. press release June 19 2002 | Centre Zone lies between North Shear and Island-Lochalsh Zones | Gold 1.36 NA |
| North Shear West | 2002 | Unclassified | 181156 | Patricia Mining Corp. press release June 19 2002 | Gold 1.78 NA | |
| North Shear East | 2002 | Unclassified | 2878562 | Patricia Mining Corp. press release June 19 2002 | Gold 1.71 NA |
Book - Technical Report on the Island Gold Deposit
Publication Number: NI 43-101 Page: 11-16 Date: 2004
Author: Roscoe Postle and Associates
Publisher Name:
Location: Timmins RGP
Map - Precambrian geology, Finan Township
Publication Number: P3168 Scale: 1:15,840 Date: 1990
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology Compilation Series - White River Sheet
Publication Number: M2666 Scale: 1:250,000 Date: 2001
Author: Santaguida F.
Publisher Name: Ontario Geological Survey
Location:
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Sault Ste. Marie Resident Geologist District Office