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Eastmain’s drilling hits good gold grades at Eau Claire and Snake Lake

Monday, October 24, 2016 5:41
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(Before It's News)

The results form part of a package of data released as part of the ongoing 63,300-metre drill program at the company’s Clearwater project in Quebec. Other highlights from Eau Claire included 10.2 grams gold over 1 metre, 79.7 grams over 0.5 metres, and 11.5 grams over 13.5 metres, including an interval of 21.3 grams over 5 metres.

At Eau Claire, recent drilling has targeted the 450W zone from surface to a depth of 300 metres.  Step-out holes were drilled east, 100 metres and 200 metres respectively, of the currently defined Eau Claire deposit. Additional drilling is planned to identify the upper boundary of potential resources in this area.

Gold mineralization at the Eau Claire gold deposit is generally located within structurally-controlled, high-grade en-echelon 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 dikes. Host rocks have been folded and deformed, or 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 – as in the 450W zone – into thick quartz-tourmaline veins with zoned alteration halos which can measure up to several metres in thickness.

The Snake Lake target is located 1.8 km east of the Eau Claire deposit along a deformation zone which extends east along the southern boundary of the Clearwater Project and the newly acquired Lac Clarkie claim block.

The current 4,700 m drilling campaign is following up on limited drilling and extensive trenching over a 1.5 km strike length conducted in prior years. The first drill hole from the 2016 program has returned three intervals of significant shallow mineralization from the west end of the trenching area.

Intercepts include 12.2 grams gold over 1.5 metres and 4.9 grams Au over 2.1 metres. Gold is associated with chalcopyrite, arsenopyrite and pyrrhotite in metavolcanics and feldspar porphyry units in the upper intersections while a schistose tourmaline vein hosts gold at depth.

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 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 strong and extensive foliation.

“The initiation of our aggressive resource definition program at Eau Claire is a significant step in advancing the project as we focus on expanding our understanding of the mineral resource,” said Claude Lemasson, Eastmain President and chief executive.

“These nine holes are the first few for which assays have been received, representing less than 5% of the 200-plus hole program currently underway. We’re encouraged by the initial results from Eau Claire and with the mineralization identified at the Snake Lake target.”

 

Story by ProactiveInvestors

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