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Eastmain Drills 5.77 g/t Au over 11.0 m at Percival and Kicks off Winter Drilling ProgramTORONTO, Jan. 15, 2019 (GLOBE NEWSWIRE) -- Eastmain Resources Inc. (“Eastmain” or the “Company” - TSX:ER, OTCQX:EANRF) reports results for the final three drill holes (887 metres) (“m”) completed in late 2018 at the Percival discovery (“Percival”) on the 100%-owned Clearwater Property (the “Property”) in James Bay, Québec. A total of 3,599 m of drilling was completed at both Percival (see PRs dated Nov. 13, 2018, and Dec. 20, 2018) and the Serendipity Prospect (see PR dated Dec. 21, 2018) during the fall 2018 program. The previously announced Winter 2019 exploration program (20-holes for 5,500 m) will focus on testing the extent and continuity of Percival, beyond the 200 m strike and 250 dip extent tested in 2018. Using a recently completed VTEM survey (final survey results pending), in addition to the Fall 2018 drill results, the program will also follow up on potential prospects along the 14 kilometre (“km”) long Knight-Serendipity volcano-sedimentary horizon (“KS Horizon”). Drilling Highlights include (see TABLE 1 below):
Claude Lemasson, Eastmain President and CEO commented: “Our exploration team is eager and ready to test the district potential of the underexplored 21,000 ha Clearwater Property. At the Percival discovery, we are beginning to better understand the stratigraphic and structural controls of the new discovery, giving us greater clarity and focus for continued exploration. The Winter program will benefit from an additional layer of VTEM™ geophysics for targeting Percival mineralization and the 14 km long KS Horizon. Furthermore, while we continue to explore our Clearwater Property, our engineering team continues pre-development activities to advance the Eau Claire Project.” Percival is located 14 km ESE of the Company’s million-ounce Eau Claire gold deposit1, within the 20-km long Cannard Deformation Zone (see FIGURE 1) and within the southern segment of the KS Horizon. Percival is a hydrothermal gold system hosted in a thick metasedimentary sequence with locally interbedded intermediate to felsic volcaniclastic rocks. Results from the latest drilling provide further understanding of the mineralization controls, namely by defining lithological and structural settings, within the host stratigraphy while identifying at least two gold mineralized zones within the metasedimentary package (see FIGURES 2-4). Table 1: Significant Intercepts
Drill hole ER18-829 (FIGURE 3) drilled ESE, successfully intersected an 18 m wide fault structure 15 m east of the Discovery Holes. The fault continues to be interpreted as NNW trending, roughly parallel to the trend of these drill holes. The Winter 2019 program will further test for orientation of the fault and potential displacement of stratigraphy and mineralization on the west side of the fault structure. In addition to targeting the fault structure, the drill hole also returned an interval of 1.74 g/t Au over 1.5 m within a 7.7 m intercept (vertical depth 97 m) of silicified breccia with anomalous gold values, east of the fault. Drill holes ER18-830 and ER18-831 (FIGURE 4) were collared 23 m west of the newly identified fault structure and 38 m west of the Discovery Holes. The previously mentioned fault is interpreted to trend between these two sets of holes and may offset the mineralization. The holes were drilled in a more northwesterly direction than previous holes and undercut hole ER18-828. The holes were targeting a potential steep westerly plunge to mineralization. Several strongly silicified breccia intervals in mudstone were intersected in these holes. ER18-830 returned two intervals of mineralized, silicified mudstone breccia, from 102.1 m to 108.0 m (0.69 g/t Au over 5.9 m) and from 124.0 m to 135.0 m (5.77 g/t Au over 11.0 m). The shallower intercept may be a continuation at depth of the same breccia intersected in hole ES18-828 from 52.5 m to 70.8 m (1.17 g/t Au over 18.3 m). The lower interval is similar in appearance to the strongly silicified breccias seen in the Discovery Holes. At the end of hole ER18-830, a deep intercept of silicified mudstone breccia was obtained (1.01 g/t Au over 10.9 m (vertical depth of 294 m). This breccia unit occurs at greater relative depth than others intersected in the fall drill program and is interpreted as a new stratigraphic horizon. ER18-831 intersected a broad interval of low-grade mineralization returning 0.21 g/t over 33 m (vertical depth of 211 m) near the end of hole in silicified, interbedded graphitic mudstone and greywacke. The mineralization is interpreted to be hosted along the same stratigraphic horizon as similar mineralization as intercepts in holes ER18-825 (0.16 g/t Au over 51.0 m at a vertical depth of 144 m) and ER18-827 (0.71 g/t Au over 51.7 m at a vertical depth of 177 m). Both previously reported intervals are located above (hanging wall) a feldspar porphyry dyke. Hole ES18-831 was not drilled deep enough to intersect the dyke. 2019 Project Objectives:
The Percival Discovery Percival is located 14 km ESE of the Eau Claire deposit (see FIGURE 1) in the Knight sector of the KS Horizon, on the Clearwater Property. The KS Horizon is characterized by an extensive package of metasedimentary and metavolcanic rocks metamorphosed from upper greenschist to lower amphibolite facies. The horizon is also affected by deformation related to major crustal scale structures specifically, the Cannard Deformation zone, at the Percival discovery. The stratigraphy at Percival comprises foliated, predominantly south facing metasedimentary rocks underlain by marine mafic metavolcanics. The Knight sector is interpreted to be at the south-western end of the prospective volcano-sedimentary sequence. Discovery Holes ER18-822 and ER18-823 were drilled on a single section to undercut gold mineralization exposed in a sequence of silicified metavolcanics and metasediments during the Company’s summer surface exploration program. These two holes intersected a silicified, sulfide rich, and gold mineralized brecciated interval of approximately 50 m in true thickness which extends from surface to a minimum vertical depth of approximately 100 m. Holes ER18-824 to ER18-831 were drilled to flank Percival discovery holes ER18-822 and ER18-823, testing for the extension of the brecciated units over a NE strike length of 200 m and across stratigraphy over 250 m. Table 2: Drill Hole Information
For additional information on the Geology of the Percival Discovery and the KS Horizon, please visit: http://www.eastmain.com/projects/clearwaterexploration/. To view Figures 1-4, please click on the following link: http://www.eastmain.com/_resources/news/Images/ER-190115-Percival.pdf. This press release was compiled and reviewed by William McGuinty, P.Geo., Eastmain’s VP Exploration and Carl Corriveau, P.Geo., Eastmain’s Exploration Manager, both Qualified Persons under National Instrument 43-101.
Quality Assurance and Quality Control (QA/QC) 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 1,000 grams 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 g 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. Approximately 10% of samples submitted are part of the Company’s laboratory sample control protocols. About Eastmain Resources Inc. (TSX:ER) www.eastmain.com For more information: Alison Dwoskin, Manager, Investor Relations Forward-Looking Statements – Certain information set forth in this news release may contain forward-looking statements that involve substantial known and unknown risks and uncertainties. Forward-looking statements consist of statements that are not purely historical, including statements regarding beliefs, plans, expectations or timing of future plans, and include, but not limited to, statements with respect to the potential success of the Company’s future exploration and development strategies. These forward-looking statements are subject to numerous risks and uncertainties, certain of which are beyond the control of Eastmain, including, but not limited to the impact of general economic conditions, industry conditions, dependence upon regulatory approvals, the availability of financing, ?timely completion of proposed studies and technical reports, and risks associated with the exploration, development and mining industry generally such as economic factors as they affect exploration, future commodity prices, changes in interest rates, safety and security, political, social or economic developments, environmental risks, insurance risks, capital expenditures, operating or technical difficulties in connection with development activities, personnel relations, the speculative nature of gold exploration and development, including the risks of diminishing quantities of grades of Mineral Resources, contests over property title, and changes in project parameters as plans continue to be refined. Readers are cautioned that the assumptions used in the preparation of such information, although considered reasonable at the time of preparation, may prove to be imprecise and, as such, undue reliance should not be placed on forward-looking statements. The Company assumes no obligation to update such information, except as may be required by law. |