Beauchastel-Rouyn Property - Polymetallic
Over the years, companies working on different sections of the property have located a large number of gold and base metal surface showings and zones, many of which have been drilled, some extensively.
The claims were covered by an AEROTEM EM and magnetometer survey done for Globex. Several new conductive zones have been identified and follow-up was recommended.
In 2001, a 1000 metre drill hole was completed on the South Block and demonstrated that the Cobalt sediments which overlay the gold localizing Cadillac Break are thin and not 1000 to 1500 metres thick as was previously theorized.
In 2008, Globex drilled 4 very wide spaced holes, totalling 3,210 m in order to test carbonate alteration zones and to intersect the Larder Lake Cadillac Break. The best results included 1.29 g/t Au over 5.2 m (including 2.06 g/t Au over 0.7 m) and 1.03 g/t Au over 6.4 m (including 2.98 g/t Au over 1 m).
The South Block consists of 22 claims covering lots 27 to 48 of Rang IV, Beauchastel Township.
The most southerly lithologies consist of Proterozoic sediments that Globex has modelled on airborne magnetic data, as being about 150 m to 200 m thick (G. Lambert, personal com., 2000). These sediments mask a regional magnetic anomaly that the Company suggested represents a large syenitic intrusive ‑similar to that as seen at Kirkland Lake, and the setting for the Macassa to Tobourn mine complex. The Proterozoic sediments are flat lying, and appear to occur within a down dropped graben structure. The northern boundary of this structure represents the historical main trace of the Larder-Cadillac Break structure. The southern boundary may be a duplex parallel thrust structure and is reminiscent of the structural setting that occurs on the Ontario side of this structure, at Larder Lake. There, a duplex thrust zone hosts the Archean Larder Lake Group and a series of gold zones, the most prominent of which was the former Kerr Addison Mine.
The South Block Proterozoic sediments are fault bound to the north by Archean lithologies that consist of a series of mafic flows and mafic intrusives separated by the Helen Lake rhyolite. In 2001, Globex drilled a 1000 metre drill hole in order to test the thickness of the Proterozoic Cobalt overlayer. The drill hole intersected only ± 50 metres of sedimentary cover and then traversed a sequence of typical Larder-Cadillac Break rock and structural sequences. Much of these rock units are anomalous in gold. The South Block represents approximately 5 km of the gold localizing Larder-Cadillac Break all of which is untested. In 2008, four additional holes confirmed the potential as demonstrated by the 2001 drill holes.
The Central-West Blockis a major felsic complex which can be divided into five cycles characterized by numerous coalescing domes. Its volcanological development is related to a quiet period of low explosive activity and low rate of volcanic flow, where synvolcanic faulting, dyking, collapsing and dome growth are interposed with quiescent periods and the deposition of cherty and pyritic horizons. At least five of these horizons have been defined. They have a low metal content, but background increment suggests an enrichment pointing through the local Evain graben toward an area completely covered by unconsolidated surface material.
It is thought that the Horne copper-gold-silver deposit (59,200,000 tons, 2.2% Cu, 0.17 oz/ton Au, 0.38 oz/ton Ag mined) and several other important mineral deposits, along with their enclosing rock units are probable equivalents to the felsic pyroclastic sequence of the Central-East Block. These rock units are therefore a waning stage of violent volcanism that provided good permeability and sites for replacement for subsequent hydrothermal activity.
The Central-East Block ties on to the north side of the Thundermin/Alexis, lac Pelletier property and includes several gold showings and numerous gold values in relatively shallow drill holes (Abbeville Zone).
The North Block is essentially represented by the Powell pluton. This synvolcanic intrusive hosts three gold deposits (Silidor, Powell Rouyn and New Marlon) and one porphyry type copper-silica deposit (Don Rouyn).
Despite a significant lack of outcrop in the North Block area, its economic potential can be assessed through a study of its overall characteristics. Three former gold mines share the same structural parameters and reflect a homogeneous field stress. Field work along with geophysical and air photo interpretation have established the main lines of the structural framework of the pluton and the reoccurrence of major fault structures, similar to those related to the gold deposits know to occur within the pluton to the east.
The south boundary of this block is marked by the Horne Fault which extends westward from the Horne and Quemont Mines and truncates the southern edge of the Powell intrusive. Along the south edge of the pluton, at the fault, in the area just south of Evain, an important gold zone, Pelletier North has been indicated by drilling. Wide zones of gold values have been indicated over a strike length of at least 350 metres. The zone is open to depth and along strike as is the cross cutting, northwest trending, gold bearing Peltier shear which includes the Peltier Central and Horne Fault zones.
Diamond drilling of a stratigraphic, 1000 metres long drill hole beneath the Cobalt sediment cover in the South Blockin 2001 has shown that the Cobalt (Proterozoic) sedimentary rock cover is only 50 to 250 metres thick rather than 1000 to 1500 metres thick as previously thought with the bulk as a free standing ridge known as the Kekeko Hills. The majority of the drill hole passed through Archean basement rocks. The hole encountered many shear zones and splays associated with the gold localizing Cadillac Break, favourable alteration and lithologies and at least 5 significant anomalous gold zones which range in true width from several metres to 15 metres. The gold zones assayed up to 1.29 g/t Au over 5.2m and 1.03g/t Au over 6.4m. Four additional holes confirmed the observations that resulted from the first hole. The rocks, alterations, structures and anomalous gold values indicate that the property has the potential of localizing a large tonnage Cadillac Break type gold deposit. Further exploration, in particular diamond drilling is warranted.