Eastmain Resources Inc (TSE:ER) has released additional assay results from its continuing 63,300-metre drill program at the Clearwater project, including the Eau Claire deposit, in James Bay, Quebec, and drills up to 43.1 grammes of GOLD over two metres.
These results are from 23 holes (6,225 m) of drilling for a total of 32 holes (9,228) m to date. A summary of significant assay results and drilling data are presented in Tables 1, 2 and 3 below.
- Eau Claire infill drilling highlights:
- 43.1 g/t Au over 2.0 m - ER16-606 including 96.8 g/t Au over 1.0 m
- 15.8 g/t Au over 3.5 m - ER16-617 including 66.6 g/t Au over 0.7 m
- 35.3 g/t Au over 0.7 m - ER16-602
- Snake Lake drilling continues to intersect mineralization across the targeted area; multiple intercepts for hole ER16-599 are at an average vertical depth of 57 m
"Our ongoing drill programs continue to showcase encouraging results on a number of fronts. Firstly, our infill results continue to reinforce our existing mineral resource through tighter drill spacing which assists in modelling our mineralized structures,” said Claude Lemasson, Eastmain President and CEO.
“Meanwhile, step-out drilling to the east continues to return positive results indicating potential for future mineral resource growth. Lastly, our Snake Lake results demonstrate more near surface mineralization within 2 km of Eau Claire, and support our thesis for potential satellite deposits," he added.
DRILLING RESULTS - EAU CLAIRE
Eastmain is reporting on the second set of drilling results which includes 15 infill drill holes (4,353 m). To date, a total of 23 holes (7,125 m) of drilling have been reported with assays pending on an additional 23 holes (7,950 m), within the planned 55,700 m (180 hole) Eau Claire drill program.
Drilling at Eau Claire continues to infill the current resource area while testing new targets beyond the known resource envelope. Infill drilling has focused on tightening nominal drill spacing to approximately 25 m within the resource area. This tighter drill spacing provides key information for future consideration of underground exploration and development. This increased information will also provide a foundation for the upcoming Preliminary Economic Assessment scheduled for completion in late 2017, on the back of an updated resource estimate in 2Q 2017.
A fourth drill is expected at Eau Claire by the end of the year, in order to accelerate the overall exploration program.
DRILLING RESULTS - SNAKE LAKE
Eastmain is reporting on the second set of drilling results which includes 8 exploration drill holes (1,872 m). A total of 9 holes (2,103 m) are now complete with assays pending on the final 11 drill holes (2,400 m) at the Snake Lake Target.
The Snake Lake Target is located 1.8 km east from the Eau Claire Deposit, along the Clearwater Deformation Zone. Drilling continues to return encouraging near-surface gold results, with similar quartz-tourmaline related gold mineralization to the Eau Claire deposit. Additionally, gold mineralization in altered basalt flows and interlayered tuffs with sulphide mineralization of up to 15% has been intersected in several holes. All drilling to date encountered mineralization within 169 m from surface, with the vast majority being in the first 100 m.
GOLD MINERALIZATION - EAU CLAIRE
Gold mineralization at the Eau Claire gold deposit is generally located within structurally-controlled, high-grade en-echelon quartz-tourmaline veins and adjacent altered rocks. The vein system is predominantly hosted within a thick sequence of massive and pillowed mafic volcanic flows, interbedded with narrow intervals of volcaniclastic sedimentary rocks. Both flows and sediments have been intruded by multiple phases of felsic and porphyry dykes. Host rocks have been folded and deformed (sheared) through several deformation events. The gold-bearing veins may occur as thin fracture fill with tourmaline and develop along an easterly strike and a southerly dip (450W zone) into thick quartz-tourmaline veins with zoned tourmaline+/-actinolite+/-biotite+/-carbonate alteration halos which can measure up to several metres in thickness.
GOLD MINERALIZATION - SNAKE LAKE
Gold mineralization at the Snake Lake occurrence is similar to the Eau Claire deposit. Quartz tourmaline veins are hosted within a thick sequence of basalt flows, tuffs and interbedded metasedimentary rocks which have been intruded by felsic dykes. As at Eau Claire, the entire sequence has been heavily deformed and sheared resulting in development of a deformation zone with strong and extensive foliation and local shearing.
The design of the Eastmain Resources' drilling programs, Quality Assurance/Quality Control and interpretation of results is under the control of Eastmain's geological staff, including qualified persons employing a strict QA/QC program consistent with NI 43-101 and industry best practices.
Drill core is logged and split with half-core samples packaged and delivered to ALS Minerals laboratory. Samples are dried and subsequently crushed to 70% passing a 2 mm mesh screen.
A 1000 gram subsample is pulverized to a nominal 85% passing 75 micron mesh screen. The remaining crushed sample (reject) and pulverized sample (pulp) are retained for further analysis and quality control. All samples are analysed by Fire Assay with an Atomic Absorption (AA) finish using a 50 gram aliquot of pulverized material. Assays exceeding 5 g/t Au are re-assayed by Fire Assay with a Gravimetric Finish. Eastmain regularly inserts 3rd party reference control samples and blank samples in the sample stream to monitor assay performance and performs duplicate sampling at a second certified laboratory. For 2016, approximately 10% of samples submitted are part of the Company's laboratory sample control protocols.