Exploration

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The Treuil license covers 88 square kilometers of mineral rights adjacent to, and contiguous with, the Company's La Mine project to the north. Occurrences of copper-silver veins, replacements and disseminated zones have been identified over an 18 square kilometer area within the Treuil license. EMX initially reported high-grade copper-silver mineralization at the Champagne prospect. EMX's more recent mapping and sampling identified additional high-grade copper-silver and gold occurrences within a six kilometer by three kilometer northwest trending area of mineralization and alteration, including the discovery of the Chardonnay and Bordeaux prospects. Chardonnay consists of structurally-controlled, high-grade copper-silver mineralization on trend with, and 2.5 kilometers south-southeast of Champagne. Notably, in addition to copper-silver mineralization, Chardonnay samples have returned consistently elevated gold assays. Together, Champagne and Chardonnay occur within a six kilometer long, north-northwest trending structural zone that hosts more than 380 recently documented copper-silver-gold occurrences. The Champagne-Chardonnay trend is open for extension along strike to the northwest and southeast. A second area of concentrated high grade copper-silver-gold occurrences has been identified at the Bordeaux prospect, located 1.5 kilometers northeast of Chardonnay, and two kilometers southeast of Champagne. Further work is necessary to delineate the extent of the mineralized systems at these two new prospects. However, it is apparent that Champagne and Chardonnay are within the same mineralized structural trend, and Bordeaux may represent a second, sub-parallel trend. Taken together, the Champagne, Chardonnay, and Bordeaux prospects have significant exploration potential as district scale, high-grade copper-silver-gold targets.

Champagne Copper-Silver Prospect: High grade copper and silver mineralization at the Champagne prospect occurs in a series of sub-parallel zones composed of "veins" and mineralized wall rocks, that are exposed within an 1275 meter long north-south trending zone. The mineralization is exposed discontinuously and remains open in both directions along trend (see map below). The best exposure of zone #1 assayed 14.0 meters @ 19.15% copper with 140 g/t silver. The copper-silver zones contain primary chalcocite and bornite and range up to 15 meters in width. Three copper-silver zones exposed at the southern end of the corridor were evaluated with 400 meters of hand-dug trenches, chip-channel and rock-chip panel samples (UNDP's Coupe Conte area; see news release dated April 2, 2007). A total of 105 trench and outcrop samples were collected from the Champagne prospect. The following significant results have been obtained from these high-grade zones:


The extraordinary high-grade zone at the Champagne prospect has the potential to host more than one significant copper-silver discovery.







Chardonnay Copper-Silver-Gold Prospect: The mineralization at Chardonnay consists of copper-silver-gold mineralization hosted within variable, but generally north-northwest trending fault zones, and in adjacent deformed andesitic wall rocks. This is a similar geologic setting to mineralization found at the Champagne prospect. Mineralization also occurs in two shallow-dipping fault zones, each up to 10 meters wide that are in turn cut by the steeply dipping, north-northwest mineralized faults. Copper mineralization occurs as primary chalcocite ± bornite + chalcopyrite in veins and as disseminated mineralization in andesitic wall-rocks. The terrain is steep and densely vegetated, with samples collected from the available outcrops by EMX field crews. These outcrops frequently consist of resistant vein material, and a limited amount of wall rock. Initial channel and panel samples have identified high-grade copper-silver-gold mineralization in several areas at Chardonnay.

EMX collected 63 rock samples over a 1.25 square kilometer area that averaged 4.00% copper (min=0.004, max=24%), 42 g/t silver (min=0.05, max=211 g/t), and 4.2 g/t gold (min=0.001, max=90.7 g/t). Of these 63 samples, 59% assayed more than 1% copper, 43% over 0.5 g/t gold, and 35% better than 30 g/t silver. A table of significant Chardonnay sample results is listed below. Of note, the wall rock can also host high-grade mineralization, as highlighted by the panel samples in the table.


Bordeaux Copper-Silver-Gold Prospect: Bordeaux is located east of the Champagne-Chardonnay trend (see below), and is characterized by a concentration of copper-silver-gold veins and disseminated mineralization adjacent to, and within, the north-northwest trending Danty fault zone. Near-source stream boulders of porphyry-stockwork style copper-gold mineralization are also present. Mineralization within, and on, the west side of the fault zone is hosted in deformed andesitic volcanic rocks. Of note, visible gold was identified in one sample from a series of narrow, closely spaced, quartz-epidote-chalcocite-bornite veins. On the east side of the Danty fault zone, the andesitic rocks host widespread and pervasive propylitic alteration. Mineralization at Bordeaux occurs as bornite-chalcopyrite with gold and silver.

EMX collected 52 rock samples at Bordeaux, covering a 1.9 square kilometer area, that averaged 2.66% copper (min=0.01, max=13.1%), 18 g/t silver (min=0.1, max=107 g/t), and 0.5 g/t gold (min=0.002, max=7.8 g/t). From these 52 samples, 50% assayed greater than 1% copper, 21% more than 0.5 g/t gold, and 21% better than 30 g/t silver. A table of significant Bordeaux sample results is listed below.


Additional high-grade copper-silver-gold occurrences have been identified outside of these mineralized prospects and zones, including 31 reconnaissance rock samples (out of 261 total) reporting more than 1.0% copper. These results indicate the property has considerable upside exploration potential outside of the currently defined areas. Additional mapping, sampling, and trenching is needed to determine the widths of the mineralized structures and zones, and to further evaluate the distribution of high grade mineralization within the Treuil property.