Enforcer Gold has reported the final results of diamond drilling in 2017, a review of the exploration program and proposed follow-up in 2018 at the Montalembert Gold Project.
Highlights of the 2017 Program:
- 133 sawn channels were collected on the Galena-No.2-3 vein exposures; notable channel sample assays include:
– 3,310.00 g/t Au over 1.0 m in MCH225702
– 105.00 g/t Au over 1.0 m in MCH223576
– 104.68 g/t Au over 1.0 m in MCH225996
– 13.50 g/t Au over 1.0 m in MCH223539
- 45 HQ core holes totalling 5,784 m were drilled on the Galena and No. 2-3 vein structures
- All drill holes intersected structures with quartz+/-carbonate veining, sulphides and alteration
- Gold mineralization above 0.5 g/t was returned in 27 of 45 holes
- Visible gold was intersected in 5 holes drilled on the No. 2 vein: MDD170004, 170006, 170022, 170032 and 170039
- Notable drill hole assays on the No. 2 vein include:
– 197.13 g/t Au over 1.2 m including 782 g/t Au over 0.30 m in MDD170006
– 13.70 g/t Au over 0.5 m and 17.50 g/t Au over 1.0 m in MDD170022
– 4.71 g/t over 0.85 m in MDD170028
– 17.5 g/t over 0.37 m in MDD170032
– 8.51 g/t over 1.0 m in MDD170043
- Historic No. 3 vein was determined to be the southern strike extension of the No. 2 vein
- Drill testing of interpreted geophysical anomalies intersected the southern extension of the No. 2-3 vein structure and additional shear veins to the east
- Prospecting led to discovery of the northern extension of the No. 2 vein structure approximately 140 m from the end of the existing trench; channel sampling returned 3.46 g/t over 0.7 m
- No. 2 vein structure is now exposed on surface and/or intersected by drilling over a 600 m strike length (open) and up to 140 m vertical depth (open)
- Galena vein structure is exposed at surface over a 300 m strike length (open)
- High-resolution aeromagnetic VLF-EM survey flown over the entire 7300-hectare property
- 45 line-kilometre induced polarization survey completed over main vein occurrences
Discussion & 2018 Planning
The Galena and No. 2 veins represent classic shear-hosted quartz-carbonate gold mineralization, which is the most significant source of gold in the Abitibi greenstone belt. This style of mineralization is well known to be erratic in terms of grade and continuity and the presence of coarse gold makes sampling and assaying of this style of mineralization especially challenging. The potential understatement or overstatement of grade is commonly referred to as the "nugget effect".
The No. 2 vein structure has proven to be the most continuous and productive of the two main vein structures. Historically, the Galena vein received the most attention based on its more robust surface expression. A 1973 surface bulk sampling program by Rochelon Mines Ltd. on the Galena vein returned 12.69 g/t gold (0.37 oz/T) over a 108.2 m strike length with an average 0.65 m width and 0.6 m depth (Reference: Rochelon Mines Bulk Sampling Report). Drill testing of the Galena vein at depth did not intersect the same degree of shearing and quartz veining that is present at surface, suggesting that the structure diminishes at depth where tested. The No. 2 vein structure however, does persist at depth to at least 140 m(open) and has a much greater strike extension of 600 m (open).
Based on a structural analysis by SRK Consulting, the shear zones at Montalembert form an anastomosing network and define a deformation corridor that is more than 100 metres wide. Ten discrete shear zones were modelled within the deformation corridor. Gold is mainly associated with shear veins that parallel their host shear zone and vary in thickness from less than 10 cm to 2 m wide. At surface, gold mineralization above 1 g/t gold primarily occurs in flexures where the veins bend, their dip shallows, and vein thickness increases. This is interpreted to result from dilation caused by the change in orientation of the shear veins and the dextral-reverse kinematics of the shear zone. Some quartz vein intervals are barren despite having intense alteration and sulphide mineralization. This is interpreted to be caused by a strong gold nugget effect within the vein system. Overall, drill hole assay results are similar to surface channel samples but are significantly lower than the grades of the historical bulk samples.
SRK has made the following recommendations for a follow-up exploration program at Montalembert:
At deposit scale:
- Target the more shallow-dipping parts of shear zones
- Investigate the discrepancies between the gold grades of drill hole and channel assays relative to the historical bulk samples to better understand the gold nugget effect
At property scale:
- Explore the extensions of the currently-defined deformation corridor, paying particular attention to variations in the dip of the shear zones
- Map the distribution and orientation of all shear zones and shear veins on the property and integrate it with the distribution of lithological contacts, folds, and faults to generate a comprehensive geological map that can be used for targeting
In addition to SRK's recommendations, Enforcer is contemplating a surface bulk sample of the No. 2 vein to get a better indication of the gold mineralization that potentially continues with depth. Enforcer is in the process of requesting bids from local contractors and labs to design and execute a surface bulk sample program.
During the 2017 field program the Company's exploration team also undertook a property-wide reconnaissance prospecting program. Results will be released following full compilation and review.
President & CEO, Steve Roebuck, comments:
"The No. 2 vein is an impressive and well mineralized geological structure that is open along strike and at depth. We expect to continue drill testing on the No. 2 vein in 2018 and are considering a bulk sampling program to obtain a better representation of the gold mineralization at surface. Follow-up on new targets generated this year will also be a priority in the 2018 exploration program. The Company remains in a strong cash position with $3.9 M is its treasury."