Eastmain Resources

Toronto, Ontario, January 4, 2017 - Eastmain Resources Inc. (“Eastmain” or the “Company”- TSX:ER) is pleased to announce additional assay results from its ongoing, 63,300 m drill program at the Clearwater Project, which includes the Eau Claire deposit, in James Bay, Quebec (see FIGURES 1-4). 
These results are from 18 holes (5,285 m) of drilling for a total of 50 holes (17,516 m) to date, from three drill rigs. A fourth rig is now commissioned to accelerate the program. A summary of significant assay results and drilling data is presented in Tables 1, 2 and 3 below.
Highlights include:  Eau Claire infill drilling highlights: o ER16-608  - 67.7 g/t Au over 2.4 m (vertical depth – 216 m) and 6.17 g/t Au over 5.3 m  o ER16-617 - 15.8 g/t Au over 3.5 m (vertical depth – 171 m) including 66.6 g/t Au over 0.8 m o ER16-620 - 6.74 g/t Au over 6.6 m (vertical depth – 118 m) including 31.3 g/t over 1.0 m
 
 Snake Lake drilling highlights: o Two types of gold mineralization identified  o ER16-604  - 11.3 g/t Au over 1.2 m (vertical depth – 32.0 m) o ER16-633  - 5.78 g/t over 2.0 m (vertical depth – 22.0 m)
 
Claude Lemasson, Eastmain President and CEO commented, “Drilling continues to return excellent results from our open pit and shallow underground definition program on the Eau Claire deposit. The infill drilling results are confirming our expectations within the current resource while tightening the drill spacing to enhance vein continuity. A fourth drill is now arriving onsite and we remain on track to deliver an updated mineral resource estimate in 2Q2017.”
DRILLING RESULTS - EAU CLAIRE
Infill drilling reported at the Eau Claire deposit in this news release includes 11 drill holes (3,780 m) to a maximum vertical depth of 270 m. A total of 34 drill holes (10,905 m) are now complete. Drilling to date is successfully developing vein continuity within the mineral resource and improving the known grade thickness within the eastern 450 West zone. (See Figures 1,3,4) Mineralization remains open at depth and to the east. 
Drilling continues to intersect mineralization within a potential open pit and shallow underground mining envelope. The current program is tightening the nominal drill spacing to approximately 25 m, in preparation for the upcoming mineral resource estimate update which will provide the foundation for a Preliminary Economic Assessment scheduled for completion in late 2017. See press releases dated October 24, 2016 and December 1, 2016 for previous drilling results.
DRILLING RESULTS - SNAKE LAKE
The second set of drilling results from the Snake Lake target includes 7 exploration drill holes (1,505 m) for a total of 16 holes (3,608 m) now complete at the Snake Lake Target. Drilling is testing a shallow 700 m long by 200 m wide corridor of gold mineralization located 1.8 km east of the Eau Claire Deposit along the Clearwater Deformation Zone. A gold mineralized sulphide rich zone of altered basalt flows and interlayered tuffaceous rocks has been identified in the central portion of the corridor. Quartz-tourmaline gold mineralization similar to the Eau Claire deposit is also identified in the corridor, related locally to shearing. Eastmain will be reviewing these results with a view to further testing of both types of mineralization. (See Figure 2)

 
 
 
 
 
GOLD MINERALIZATION - EAU CLAIRE
Gold mineralization at the Eau Claire gold deposit is generally located within structurally-controlled, high-grade enechelon 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. Significant zones of sulphide mineralization of up to 15% (pyrite, pyrrhotite, +/- arsenopyrite +/- chalcopyrite) are also reporting gold mineralization within the deformation zone.
Table 1:  Eau Claire: Summary of Drilling Results 
Type Drill Hole From To Interval Gold Assay
Vertical Depth(3)
Interpreted Zone     m m m (1) g/t Au(2) m  
Infill ER16-597 
197.0 197.7 0.7 7.47 171.0
450W
238.9 240.0 1.1 3.56 207.0 262.0 267.0 5.0 5.06 229.0 Incl. 263.0 264.5 1.5 11.1  272.3 276.5 4.2 2.73 237.0 Incl. 274.5 275.0 0.5 16.5  300.0 300.6 0.6 21.8 259.0
Infill ER16-608
190.6 193.6 3.0 6.36 164.0
450W
Incl. 192.1 192.6 0.5 26.4  197.1 197.6 0.5 2.04 169.0 223.1 224.2 1.1 9.12 190.0 231.2 236.5 5.3 6.17 199.0 Incl. 231.2 231.7 0.5 15.7  Incl. 233.0 233.5 0.5 20.9  243.6 246.2 2.6 6.31 208.0 Incl. 245.6 246.2 0.6 15.9  252.8 255.2 2.4 67.7 216.0 Incl. 252.8 254.7 1.9 85.1  264.4 265.1 0.7 27.0 225.0 270.8 273.1 2.3 3.90 231.0
Infill ER16-612
92.0 94.4 2.4 7.58 80.0
450W
Incl. 92.0 93.0 1.0 16.6  197.8 198.3 0.5 5.40 170.0 205.2 205.8 0.6 4.84 177.0 209.5 210.0 0.5 15.7 180.0 243.5 244.2 0.7 9.84 210.0 249.0 249.5 0.5 7.62 215.0 259.0 260.0 1.0 27.2 223.0 265.0 265.5 0.5 14.7 226.0
Infill ER16-617
112.9 117.0 4.1 1.12 97.0
450W
202.1 205.6 3.5 15.8 171.0

 
 
 
 
 
Type Drill Hole From To Interval Gold Assay
Vertical Depth(3)
Interpreted Zone     m m m (1) g/t Au(2) m   Incl. 204.8 205.6 0.8 66.6  211.2 211.7 0.5 8.90 178.0 223.2 224.2 1.0 8.50 189.0 260.8 261.8 1.0 2.70 220.0
Infill ER16-619
83.5 84.0 0.5 3.97 70.0
450W
183.7 184.2 0.5 16.3 153.0 192.2 193.5 1.3 2.54 160.0 263.5 264.0 0.5 28.5 219.0
Infill ER16-620
127.0 128.0 1.0 2.40 103.0
450W
229.2 235.8 6.6 6.74 188.0 Incl. 229.2 230.2 1.0 31.3  Incl. 234.8 235.8 1.0 10.0 
Infill ER16-624 
87.0 87.5 0.5 3.34 78.0
450W
102.8 103.4 0.6 3.58 92.0 114.0 116.5 2.5 1.91 103.0 247.0 247.5 0.5 4.46 219.0 257.2 257.9 0.7 25.0 229.0 294.3 294.9 0.6 16.0 261.0
Infill ER16-625
200.0 201.0 1.0 4.11 162.0
450W
260.9 262.9 2.0 4.43 211.0 Incl. 261.4 261.9 0.5 11.0  291.7 305.0 13.3 2.17 239.0 Incl. 291.7 294.8 3.1 4.32  304.0 305.0 1.0 7.07 244.0 Infill ER16-628 215.5 216.2 0.7 3.51 166.0 450W
Infill ER16-631
259.0 259.5 0.5 17.7 213.0
450W
263.6 264.2 0.6 2.91 217.0 275.1 275.8 0.7 4.48 227.0 284.6 285.7 1.1 3.74 234.0 289.7 290.6 0.9 2.39 239.0 322.8 323.3 0.5 3.38 266.0 Infill ER16-641 NSV        450W
 
Table 2: Snake Lake: Summary of Drilling Results Drill Hole From To Interval Gold Assay Vertical Depth(3)
Interpreted Zone
 
m m m (1) g/t Au(2) m
 ER16-603 NSV      ER16-604 43.85 45.0 1.15 11.3 32.0 Altered Feldspar porphyry w/ quartztourmaline veining ER16-618 297.1 299.3 2.20 1.91 196.0 Volcanic tuff w/ up to 15% sulphide ER16-623 NSV      ER16-627 NSV      ER16-633 29.7 31.7 2.00 5.78 22.0 Mafic volcanic w/ 5-10% sulphide 33.9 34.5 0.60 4.69 25.0 Mafic volcanic w/ tourmaline quartz veining+5% sulphide ER16-637 47.8 48.3 0.50 6.01 33.0 Metasedimentary rock w/ tourmaline quartz veining+20% sulphide + V.G. 53.2 55.2 2.00 3.26 37.0 Metasedimentary rock w/ tourmaline quartz veining+5% sulphide Incl. 53.7 54.2 0.5 8.14
 (1) Intervals are presented in core length; true width will vary depending on the intersection angle of the hole with the targeted zone.  Holes are generally planned to intersect vein structures as close perpendicular as possible and true widths are estimated to be 75%-85% of downhole widths.