Toronto, Ontario, May 13, 2019 - Eastmain Resources Inc. (“Eastmain” or the “Company” - TSX: ER, OTCQX: EANRF ) is pleased to announce the results of seven holes (1,767 meters (“m” )) drilled as part of the 2019 winter program targeting the Percival (“Percival”) discovery area on the Clearwater property, 100% owned by the Company and located in the James Bay region of Quebec (see FIGURES 1-6 ). The winter drilling program, seventeen holes totaling 4,659 m, is now complete. The Company is awaiting analytical results from the last four holes in the program.

Highlights of the program:

  • Identification of three main mineralized zones trending east-west
    • Extending laterally (east-west) for at least 650 m, with a width (north-south) of 250 m.
  • ER19-839: 2.57 grams per tonne of gold ("g / t Au") over 14.5 m (vertical depth of 60 m), including 4.66 g / t Au over 7.0 m (breccias of mudstone) and 9.40 g / t Au over 2.0 m
    • Extension of mineralization 200 m east of the Percival discovery holes and 50 m east of any previous results (see FIGURE  5 )
  • First significant gold interval in a graphitic shale unit
    • ER19-840: 0.28 g / t Au over 83.4 m (vertical depth of 153 m) (see FIGURE 3 )
  • Extension of silicified and mineralized breccias 100 m deep
    • ER19-844: 0.62 g / t Au over 44.8 m (vertical depth of 210 m) (silicified and mudstone breccias), extending the mineralization by 100 m, to a vertical depth of 210 m (see FIGURE  4 )
  • Followed by a ground exploration campaign in the spring (May-July) 
    • Surface mapping and geophysics, including trenching and target sampling, starting at Percival and extending 5 km east along the KS Horizon (see FIGURE 6 )

Claude Lemasson, President and CEO of Eastmain, said: “The results of the expansion drilling to the east show that three gold zones are emerging over a significant distance of 650 m. The zones appear to converge as mineralization continues to the east. Due to the use of the helicopter-borne (VTEM) and ground (Maxmin) geophysical surveys conducted earlier this year as the primary tools for establishing targets, our drilling was able to successfully extend the gold zones of the discovery holes. . We look forward to continuing to explore this discovery and its related new exploration targets, near our Eau Claire project. "

Table 1: Significant intersections (for a table of complete analysis results, click here )

Survey From
(Au g / t)
Vertical depth (m) Host lithology
ER19-838 156.0 157.0 1.0 5.63 111 Mudstone Breaches
ER-19-839 81.0 95.5 14.5 2.57 62 Mudstone Breaches
incl. 82.0 89.0 7.0 4.66 60
including 85.0 87.0 2.0 9.40 61
ER18-840 92.0 99.9 7.9 0.87 68 Siltite
174.6 258.0 83.4 0.28 153 Graphitic shale
incl. 174.6 233.0 58.4 0.34 144
including 210.5 215.7 5.2 1.02 151
ER19-843 205.0 219.5 14.5 0.52 150 Shale
ER19-844 234.2 279.0 44.8 0.62 180 Silicified breccias and mudstone breccias
incl. 234.2 239.0 4.8 2.07
incl. 266.0 269.0 3.0 1.73
  • The intervals are presented in lengths along the drill axis; holes are generally planned so as to intersect mineralization as close to perpendicular as possible; the actual thickness is estimated to be 75% of the length along the drill axis when the orientation and dip of the hole and the mineralized horizon are taken into account.
  • Analysis results were not cut. Intersections are confined within the geological boundaries of large areas, but have not been correlated to individual structures or horizons yet.
  • Vertical depth is measured from the surface to the midpoint of the interval.

Drilling results

Holes published in this press release laterally extend the stratigraphic sequence of Horizon KS 450 m to the west and 200 m to the east relative to the Percival, ER18-822 and ER18-823 discovery holes. .

Holes ER19-838 and ER19-839 extend the known Percival mineralization 50 m laterally to the east. The holes, carried out on the same section, intersected a sequence of steeply dipping mudstone breccias, including intersections of metamorphosed iron formation and silicified Percival-type breccias. These holes show the continuity of the iron formation units first identified 100 m and 50 m to the west in holes ER19-836 and ER19-837 respectively, as well as the first presence of mineralization with an anomalous gold grade. related to this lithology.

Hole ER19-840 was drilled 150 m west of the Percival discovery holes. This hole intersected an 8 m interval of anomalous gold mineralization which is interpreted as the westerly extension (40 m) of a similar anomalous shale / siltstone unit intersected in hole ER18-825 (0, 25 g / t Au over 13.9 m). The hole also intersected a large interval of anomalous mineralization at depth, in a graphitic shale sequence. This interval is notable for the continuity of gold mineralization through a thick sequence of graphitic sediments in the Percival sector where gold mineralization is mainly related to silicification. Hole ER19-840 established a mineralized graphitic sequence to the north,

Hole ER19-844 was drilled to intersect holes ER18-833 and ER19-836 and successfully intersected silicified breccia horizons of the Percival stratigraphic sequence at 100 m vertical depth below the previously intersected intervals.

Holes ER19-841, ER19-842 and ER19-843 (west to east) verified areas of VTEM anomalies between the Knight showing and Percival. The soundings intersected what is interpreted as the northern and southern stratigraphic limits of the Percival volcano-sedimentary ensemble. The boundaries are defined by basaltic units as well as graphitic mudstones, mudstone breccias and weakly silicified breccias found to the north and south of the Percival sedimentary ensemble. Soundings show a possible westward closure of the sequence in this part of the KS Horizon. Hole ER19-843 intersected an interval of 14.5 m in silicified shales that corresponds to the mineralized interval intersected in holes ER18-825 and ER18-840.

Table 3: Drilling information

Targeted area Survey UTM coordinates
Zone 18
Azimuth Hanging Total Elevation
    is North Degrees Degrees (m) (m)
Percival ER19-838 457,852 5 781 828 360 -45 217 331
Percival ER19-839 457,852 5 781 870 360 -45 166 330
Percival ER19-840 457,502 5 781 667 360 -45 307 325
Knight ER19-841 457,202 5,781,799 360 -45 193 337
Percival ER19-842 457,251 5 781 642 360 -45 163 317
Percival ER19-843 457,352 5 781 581 360 -45 349 318
Percival ER19-844 457 753 5 781 671 360 -45 372 332

To view more analysis results in Table 2, please click on the link: ER-190513-Table2-Percival.pdf .  

To view Figures 1-6, please click on the link: ER-190513-Percival.pdf .

The scientific and technical content of this news release has been prepared and reviewed by William McGuinty, P.Geo. and Vice-President Exploration of Eastmain, as a “qualified person” under NI 43 101 regulation.

Quality control and assurance

The design of drilling programs, quality assurance and control, as well as the interpretation of Eastmain Resources results are under the control of Eastmain geological staff, which includes qualified people using a QA program. / Strict QC, compliant with NI 43-101 and industry best practices. The Clearwater project is supervised by Michel Leblanc, P.Geo. project geologist at Eastmain.

The drill core is described, cut and divided into half core samples which are packaged and delivered to the ALS Minerals Inc. laboratory. The samples are dried and then crushed to 70% exceeding a sieve of 2 mm. A 1000 g sub-sample is sprayed at 85% exceeding a 75 micron sieve. The rest of the crushed sample (reject) and the pulverized sample (pulp) are kept for further analysis and quality control. All samples are analyzed by fire assay with an atomic absorption (AA) finish using a 50 g aliquot of the sprayed material. The results obtained above 5 g / t Au are reanalyzed by fire assay with gravimetric finishing. Eastmain regularly inserts reference control samples obtained from third parties and blank samples in the course of samples to monitor assay performance, and sends duplicate samples to a second certified laboratory. As of 2016, approximately 10% of submitted samples have been part of the Company's laboratory sample control protocols.

About Eastmain Resources Inc. (TSX: ER) 

Eastmain is a Canadian exploration company advancing three high-grade gold assets in the new James Bay gold camp in Quebec. The company has a 100% interest in the Eau Claire project, for which it recently published a preliminary economic assessment (“PEA”), and in the Eastmain mine project, for which it has prepared a mineral resource estimate in accordance with the NI 43-101 in 2018. Eastmain also manages the Éléonore Sud joint venture, located immediately to the south of Goldcorp Inc.'s Éléonore mine, where a new high-grade gold discovery was made at the end of 2017. In addition, the company has '' a portfolio of exploration projects in this favorable mining jurisdiction, with nearby infrastructure.


For more information:

Claude Lemasson, Chairman and CEO

+1 647-347-3765

Alison Dwoskin, Director, Investor Relations

+1 647-347-3735

The text of the press release resulting from a translation should in no way be considered official. The only authentic version of the press release is that of the press release in its original language. The translation will always have to be compared to the source text, which will set a precedent. 

Forward-looking statements- Certain information presented in this press release may contain forward-looking statements involving significant known and unknown risks and uncertainties. All forward-looking statements are not purely historical and include beliefs, plans, expectations or a timeline of future plans. They include, but are not limited to, statements relating to the potential success of the Company's future exploration and development strategies. These forward-looking statements are subject to numerous risks and uncertainties, some of which are beyond the control of Eastmain, in particular, without being limited to, the impact of general economic conditions, the situation of the sector, dependence on '' with regard to regulatory approvals, title challenges and changes to project parameters as long as plans continue to be refined. Readers are cautioned that the assumptions used in the preparation of this information, although considered reasonable at the time of preparation, may prove to be imprecise and that, therefore, one should not place undue reliance on forward-looking statements. The company assumes no obligation to update this information, except as required by law. forward-looking statements should not be relied on unduly. The company assumes no obligation to update this information, except as required by law. forward-looking statements should not be relied on unduly. The company assumes no obligation to update this information, except as required by law.

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