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Eastmain drills 13.3 m of 8.31 g/t gold at Clearwater’s Eau Claire

Monday, March 6, 2017 9:01
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Eastmain Resources Inc (TSE:ER) released new infill drilling assay results from its continuing 63,300-metre drill program at its 100%-owned Clearwater project on Monday.

The specific site reported, located within James Bay, Quebec, is Eastmain’s core asset at the Eau Claire gold deposit.

Eastmain said it is reporting on assay results from 19 drill holes (6,135 m), which continue to establish continuity while testing the limits of an open pit and shallow underground mining concept.

A total of 94 exploration and infill drill holes totalling (28,535 m) have been reported to date, with approximately two-thirds (44,500 m) of our planned drill program now complete. Assays are pending on 48 holes. Drilling continues within the deposit with 5 rigs on site. Completion of the drill program is expected in early Q2/2017.

“We’re pleased with the assay data demonstrating continuity of the underground potential of the deposit, particularly between 200 – 300 m depth. In particular, we’re encouraged by our new understanding of two high grade schist veins (“HGS”), HGS-02 and HGS-04, which are believed to be an early ESE trending vein system in the deposit, later cross-cut by extensive east-west trending gold bearing quartz-tourmaline veins. These HGS veins stand out due to their broad widths, high grades and identifiable continuity,” said William McGuinty, Eastmain’s VP Exploration.

“With the final leg of our drill program now underway, Eastmain intends to focus on further defining the lateral and vertical extent of these broad HGS veins in conjunction with the narrower en-echelon vein sets and continue to further define consistency of mineralization within the deposit,” he added.


Highlights from Eau Claire intercepts with visible gold include:


  • ER17-6748.31 g/t Au over 13.3 m, incl. 11.4 g/t Au over 8.8 m, and 4.28 g/t Au over 2.3 m at a vertical depth of 233 m
  • 11.4 g/t Au over 2.5 m, incl. 45.5 g/t Au over 0.5 m at a vertical depth of 245 m
  • ER16-6668.95 g/t Au over 4.6 m, incl. 20.4 g/t Au over 1.8 m at a vertical depth of 296 m
  • ER16-6585.6 g/t Au over 11.3 m, incl. 11.9 g/t Au over 2.3 m and incl. 7.82 g/t Au over 3.9 m, at a vertical depth of 366 m
  • ER17-6813.02 g/t Au over 11.0 m, incl. 4.48 g/t Au over 6.0 m at a vertical depth of 122 m


The focus of the 2016/early 2017 drill program, consisting mainly of infill drilling, is to generate additional data to:


  • expand our understanding of the mineralizing controls at Eau Claire
  • confirm our current geological interpretation and test the limits of mineralized envelope
  • improve drill spacing to show continuity between veins and increase overall confidence in the deposit


To date, the program has been successful in defining grades and establishing continuity characteristic of Eau Claire’s current resource model. This enhanced understanding is expected to play a key role in supporting a Preliminary Economic Assessment expected around year-end.


Drilling results – Eau Claire

Drilling completed and reported herein focused on the 200-300 m vertical depth range across the deposit and supports continuity in the two HGS vein domains intersected. Similar to the east-west trending, high-grade gold veins identified at Eau Claire, the HGS veins also host high-grade, gold mineralization. However, the HGS veins differ due to their extensive alteration widths and their particular east-southeast trend. The HGS-02 and HGS-04 veins consist of wide ESE trending corridors of sheared and altered, gold-bearing metavolcanic rock. The zones are parallel to the host rock foliation and are interpreted to parallel the southern or hanging-wall boundary of the deposit.

On the HGS-02 vein, the results show continuous mineralization over 100 m of strike length, within a broader vein extent of approximately 350 m along strike and 339 m of dip extent. Interpreted intercepts of the HGS-02 vein were identified in holes ER17-674 (8.31 g/t Au over 13.3 m), ER16-658 (5.6 g/t Au over 11.3 m), ER16-666 (8.9 g/t Au over 4.6 m) and ER16-668 (9.93 g/t Au over 1.5 m).

Drilling on the HGS-04 vein currently demonstrates 300 m of strike length continuity, within a broader strike extent of 650 m and dip extent of 310 m. Interpreted intercepts of the HGS-04 vein are reported from east to west at approximately 300 m depth in holes ER16-666 (5.37 g/t Au over 4.3 m) and ER17-673 (9.1 g/t Au over 1.4 m); and at 50 to 100 m depth in holes ER16-670 (4.5 g/t Au over 0.5 m); ER16-671 (15.8 g/t Au over 1.3 m) and ER16-665 (8.6 g/t Au over 0.6 m).

Holes ER17-672, ER17-675, ER17-677, and ER17-679 tested shallow veins in the central area of the Eau Claire deposit intersecting interpreted infill intercepts for veins HGS-03, HGV-01, B and C.

Holes ER16-665, ER-670 and ER-671 continue to explore the eastern edge of the deposit with shallow holes extending the interpreted HGS-04 vein by approximately 25 m up-dip from previous intersections on their respective sections.

Story by ProactiveInvestors


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