Eastmain Resources Inc.

Eastmain Resources Inc.

September 23, 2010 12:37 ET

Eastmain Mine B Zone Drilling 12.2 Grams Per Tonne Au Over 9.5 Metres

TORONTO, ONTARIO--(Marketwire - Sept. 23, 2010) - Eastmain Mines Inc., a wholly-owned subsidiary of Eastmain Resources Inc. (TSX:ER), announces assay results from drilling at the Eastmain Gold Deposit, which is located at the eastern end of the Eastmain River Greenstone Belt, in James Bay Québec. Drill hole EM10-28 intersected a 9.5-metre-wide zone of gold-silver-copper mineralization grading 12.2 g/t gold within the B Zone Mine horizon rocks. This intersection, which occurs from 217.5 to 227.0 metres down the hole, includes 17.4 g/t gold over 5.0 metres and 24.1 g/t gold plus 30.1 g/t silver over 2.5 metres.

A 14,000-metre drill program is currently being completed at the Eastmain Mine project. Objectives of the 2010 drilling are to expand both the lateral and vertical limits of the known A, B and C Zones of the Eastmain Gold Deposit, define the structural and lithological controls of gold mineralization, and to drill-test a number of regional geophysical and geochemical targets elsewhere on the property.

The A, B and C zones of the deposit have a large mineralized "footprint" occurring over a length of 1.7 kilometres. Prospecting has also identified significant copper-gold mineralization extending for several kilometres northwest of the A Zone, with grab samples grading from 1.38 to 33.3 g/t Au.

Hole EM10-28 drilled into the B Zone intersected mine series rocks as follows:

Hole ID
  Cu %
EM10-28   217.5   227.0   9.5   12.2   15.7   0.19   B
incl.   221.5   226.5   5.0   17.4   22.9   0.19   B
incl.   223.0   225.5   2.5   24.1   30.1   0.23   B
Notes:   The mineralized interval consists of altered Felsic tuff with quartz veins, accessory pyrrhotite, chalcopyrite and pyrite. Visible gold was observed in the interval from 223.0 to 225.5 metres.
    *Drill intercepts reported as core lengths are estimated to be 95-100% true width.

Drill hole EM10-45, located over a kilometre southeast of hole EM10-28, intersected three mineralized horizons within the C Zone in similarly altered "Mine Series" rocks as those defining the A and B Zones. Hole 45 intersected 4.3 metres of altered, visible-gold-bearing, mineralized (pyrrhotite and chalcopyrite) basalt and rhyolite tuff cut by quartz veining in the upper part of the hole from 128.4 to 132.7 metres. This unit is followed by a 2.7-metre-wide mineralized zone from 143.4 to 146.1 metres down the hole, consisting of altered rhyolite tuff with quartz veining, one grain of visible gold and minor pyrrhotite and pyrite. In turn, this zone is proceeded by an 8.0-metre-wide interval of the main mine series rocks from 220.0 to 228.0 metres depth, composed of highly altered ultramafic rocks and rhyolite tuff with layers of massive pyrrhotite and chalcopyrite. Assay results for this hole and several others are pending.

Dr. Donald J. Robinson, President and CEO of Eastmain stated, "Although assays for a substantial number of drill holes are currently pending, we are impressed with the first phase of drilling at the Eastmain Mine property. Drilling has intersected a number of mineralized intervals of significant thicknesses in all three zones of the Eastmain Gold Deposit. Surface exploration has also confirmed the potential for additional discoveries along the mine trend."

Dr. Donald J. Robinson P.Geo, is the Qualified Person for the information contained in this press release and is a Qualified Person within the meaning of National Instrument 43-101. Chemical analysis for the drilling was completed by ALS CHEMEX Laboratories using a 50-gram split for multi-element and gold ICP analysis. Samples grading over 500 ppb are analyzed by fire assay techniques with and atomic absorption finish. Samples greater than 10 grams are then fire-assayed with a gravimetric finish. Internal standards provided by an independent company and blank samples were inserted for quality control purposes. Assay samples are taken from NQ core, sawed in half along the core axis; one half is sent to ALS Laboratories and the other half retained for future reference.

About Eastmain Resources Inc. (TSX:ER)

Eastmain is a Canadian gold exploration company with 100% interest in the Eau Claire and Eastmain gold deposits. The Corporation has $20 Million in working capital and holds an interest in 12 projects within the James Bay District, including the Éléonore South property, which is contiguous with the property hosting Goldcorp's Roberto deposit. Eastmain has increased its 2010-2011 budget of $7.5 million by approximately 34%, to about 10 million, for gold exploration in Québec.

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. 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 and the availability of financing. 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.

Contact Information

  • Eastmain Resources Inc.
    Dr. Donald J. Robinson
    (519) 940-4870
    (519) 940-4871 (FAX)
    Eastmain Resources Inc.
    Catherine Butella
    Exploration Manager
    (519) 940-4870
    (519) 940-4871 (FAX)