Gold mineralization in the Abitibi Greenstone Belt is frequently concentrated close to large crustal penetrating fault structures. These structures and associated second order faults provide a pathway for the emplacement of high level crustal intrusions as well as a conduit system for the emplacement of gold bearing fluids.
The Gowganda property is situated on one of these major fault structures – The Ridout Fault Zone
Target 1: Mineralized Syenite Dyke Swarms
Many gold deposits in the Abitibi region are syenite hosted – or closely located within structures that may have interacted with the syenite intrusions.
Geological mapping and trenching at Haultain has exposed a large zone of mineralization in a syenite dyke swarm.
Surface Trenching has identified three main east-trending gold bearing intrusive syenite dyke swarms that are the main target for exploration. The North swarm, Swain swarm and the South swarm.
Most of the significant gold assays are from stockwork quartz and quartz-carbonate veins in these syenite dykes. The Stockwork systems demonstrate good geological continuity and have been traced along strike on surface for more than 1.5 kilometers.
Trenching at the Annie’s Ladder Showing exposed veining hosting visible gold within and along the margins of the syenite dykes.
Target 2: Mineralized Shear Zones
Shear structures developed around syenite dyke swarms.
Shear zones are major zones of weakness extending to the earth’s crust which are important for emplacing the syenites. Continued deformation along these structures creates brittle fractures which can be invaded by gold bearing fluids.
Subsequent to the drill program, it was recognized that shear structures, related to the syenite dyke swarm also represent an important feature for hosting high grade values of gold that has yet to be explored in a systematic fashion. These structures are considered to be prospective for hosting higher grades of gold mineralization than observed in the stockwork system as is common for other deposits in the region.
Two Main Shear Vein Systems have been identified around EW and NW trending Dyke swarms.
The South Central Shear (E-W) is traceable along the southern contact of the Swain syenite dyke Swarm.
Hole TMH11-009 intersected 82.5 gt Au over 0.4metres.
There are Elevated gold values at surface along this structure over 1.5 km of strike.
Northwest Shear Vein System is Traceable for > 1km and is Exposed in Trench 7.
The NW Shear is 7 to 10 meter wide and is intruded by altered and mineralized syenite dykes with parallel veining hosting elevated gold. Nuggety thumbnail size Visible Gold is evident in the veining.
Previous Drill Results
A 21 hole drill program was previously conducted targeting gold mineralization associated with qtz/carb stockwork viening occuring in syenite dykes exposed by the trenching.
3 holes at Annies ladder showing Intercepted a series of gold veins and returned multi-meter multi-gram gold intercepts, similar in range of gold values to the channel samples at surface
- 2.4 g/t over 7.1 m
- 4.7 g/t over 3.1 m
- 82.5 g/t over 0.4 m
- 1.6 g/t over 11.7 m
Proposed Drill Program
The Gowganda property has further potential for multiple sites of shear hosted mineralization where veining has developed in shears and pressure shadows developed around the syenite intrusions.
Next steps for the project include a $400,000 trenching and drill program that will test the downward extension of mineralization exposed at surface and areas where shear structures interact with the syenite dykes.