Rocmec Mining Rocmec 1ROCMEC 1 GOLD PROPERTYProperty Description and Location The Rocmec 1 project is located in the Dasserat Township, Province of Québec on the shores of the Labyrinthe Lake. It is approximately 35.4 kilometres west of the town of Rouyn-Noranda and is easily accessible from Route 117 and the frontier gravel road separating Quebec and Ontario and a secondary gravel road to the site. The Rocmec 1 property is centred on latitude 48°14'N and longitude 79°29'W and overlaps the NTS 32 D03 and 32D04 1:50,00 topographic maps. The property is located in the Municipality of Rouyn-Noranda. It is under the jurisdiction of the different agreements associated with this municipality.
Figure 1: Location of the Rocmec1 property Geological Setting Regional geology The Rocmec 1 mine is located at the southern center of the geological Superior Province. Close to the suthern part of the Abitibi green belt. The immediate area is composed rhyolites and andesites of Archaean age of the Blake River Group (2.7Ga) associated to the Noranda Complex. According to Goodwin (1977) the area is part of the sub-group of Misema of calcalkali affinity made up to 90% of mafic to intermediate rocks. These rocks are cut by intrusive pre and syn-tectonic masses of gabbroic-dioritic composition to locally syenitic.
The metamorphism reached the green schists facies. Diabase dykes of proterozoïc age cut all the geological formations. The property is located between the regional Destor-Porcupine (in north) and Cadillac faults - Larder Lake (in the south). The gold bearing mineralization of the Rocmec 1 (Russian Kid) deposit is associated with the lake Labyrinth fault and its tectonic system (Kelly, 2002).
Regional geology of the Rocmec 1 (Russian Kid) mining camp There is no mining camp associated directly with the Rocmec 1 mine. However, due to its location and the proximity of the Larder Lake fault, it could be interpreted as the continuity of the Larder Lake fault mining camp. No sufficient data is available for this relation.
Geology of the Rocmec 1 mine Most of the information obtained being relative to the mineralization of the deposit, the characteristics of the deposits are then discussed in the mineralization chapter. The host rock is a differentiated sill of several kilometers in length and of almost 600 meters in width. This ENE-OSO intrusion is characterized by several lithological facies passing from gabbros to diorites and quartziferous diorites to felsic rocks of granodioritic to tonalitic composition. In general, the mafic facies are encountered to the northern part of the sill. Mineralisation is mainly distributed in altered and sheared diorites.
The mineralisation is associated with an E-O fractures/shear system, more or less parallel. It is crosscut in several places by transverse faults with weak displacements. The more important transverse faults produced relative displacements of more than 30 meters (ex: El Coco fault). Orientation of the mineral-bearing structures varies from N070° with N090° with dips of 55° to 80° towards the south. The dislocations caused by the transverse faults twinned with intense shearing forces explain the paneling of the mineralization. Highly silicified Fractures and tension veins were developed near the shear zones. They are strongly silicified, foliated and characterized by fine grained cataclastic to mylonitic textures containing visible or pulverized fragments. The mineral-bearing zones are generally strongly silicified and consist of finely grained and foliated rocks. Hydrothermal fluids rich in sulphur modified the chemistry of diorites into quartziferous diorites and rocks of tonalitic to trondhjemitic composition. Alteration is characterized by a strong silicification, carbonatization and medium sericitization As well as a weak chloritisation in the pyritized sheare zones. Sericitization more often found in the granodioritic and tonalitic facies while the chloritisation more often found in the gabbroïc facies. The various types of alteration form an envelope of a few meters to close to 40.00 meters surrounding the mineralized zones. The quartz veins wall rock are consisted of mineralized sheare zones and are marked by strong slisification, carbonatization, epidotization and chloritisation. The pyrite rich zones are altered in limonite close to surface.
Deposit Type The gold bearing veins of the Rocmec 1 property are quartz carbonates veins boxed in differentiated intrusive rocks which containing quartz and showing a granophyric texture. The competent nature of the host rock and the high contant in iron (Fe) is favourable for the gold precipitation. The quartz carbonate veins generally form tabular to lenticular clusters in the central portions of the shear zones of ductile fragile behavior, either parallel to slightly oblic to the structure host (Hogson, 1989; Poulsen and Robert, 1989). The deposit is considered structural associated with shear zones. Longitudinal sections of the mineralized zones are shown in the resource estimation section.
Mineralization The description of the mineralization is based on partial information from the MRB Technical Report of February 2006 combined with site visits and the new concept from Geostat stating that the main vein system has had various name depending on its easting position but was in fact the same main McDowell zone as per new actual modeling of the zone. The mineralization here is gold. In the resource estimation section, some Veins have been connected together along strike to reflect the obvious that the McDowell is actually the main most continuous main zone due to its abundance of information this also help and serves in the longitudinal calculation of resources. In general gold mineralization is composed of fine to medium-grained disseminated pyrite in the shear zones and breccias affecting the diorite. Mineralized pyrite ranges from 2 to 10%. Small quartz veins of a few centimetres to 90 centimetres wide are encountered in these zones. The weakly pyritized veins occasionally contain chalcopyrite or visible gold. The silver contents are generally four to five times lower than those of gold. Several samples rich in gold were analyzed for silver whose contents varied between 1,37 g/t and 13,71 g/t (GM 57624). Occurences of massive pyrite bands were found to the edge of quartz veins. Best gold contents are associated to the massive pyrite bands also with disseminated, crushed fine pyrite associated with chlorite. Diorites (represent 80% of rock) are coarse grained, massive to porphyritic containing feldspars and prismatic amphiboles automorphs. They are sometimes magnetic (0-10% magnetite). Coarse gray leucoxene is present up to 5% in the epidote rich zones. Mineralized and pyritized zones are strongly to moderately altered consisting of silicification, epidotisation, carbonatisation, chloritisation and sericitisation. The presence of many late transverse faults dislocated the quartz-carbonate veins. These dislocations has lead to the naming of the same zone with various name and it is why the past exploration programs specified the mineralization as mineralization of discontinuous nature. Now with the additional drilling done by Rocmec, it is now obvious that mineralized zones are continuous, but have simply being transversally shifted from few centimetres up to 20 meters in the north, north east –south south west fault called Yvan. It is now possible to follow the veins and predict their approximate position in space with the shifted from surface to 150m.
Historical nomenclature of the zones As previously mentioned, historical works where submitting names of discovery for various veins but sometimes for the same structure because of its position in relation to the shaft. Here is the list of the historical names that were used followed by the 2007 revised names according to the modeling we did. 1. New Front west zone 2. McDowell Vein mineralization
3. Talus Vein mineralization
4. Shaft Vein mineralization
5. New Boucher Vein mineralization 6. New Boucher 2 Vein mineralization
Geostat’s interpretation concept relies on the fact that the main zone (McDowell) sets the marker in the group of mineralized structures, all the other zones are defined according to their relative position and distance on the foot or hanging wall of the McDowell, it is why the Beaudoin historically called extension of the talus could not totally make sense since underground information confirms it dies on the McDowell and the second vein encountered on the footwall of the McDowell to the East can not be the Talus but the eastern extension of the Shaft vein and so on. This new modeling also guarantees the strict evaluation of resource and volume balance of the mineralized material in 3D.
Description of the zones Generally speaking most of the zones look a like in terms of structure and mineralization, some differentiate lightly by the content in quartz, pyrite, sericite and chlorite but for now they are believed to be all related to the same geological even. Along the zones in underground openings pinch and swell was observed along the main shear plane, the zone is always there with variation of the thickness and grades. Additional work will be required to confirm or infirm better continuity orientations of gold content within the geological plans of the zones which are actually thought to be sub-vertical dipping west.
Front west This mineralized zone recognized by diamond drill holes is near surface to the west of existing shaft, no special name was given, only in accordance to the fact it sits in front of the McDowell i.e. on the hanging wall. Actual known extent of the zone ranges from 5950Me and 6080mE near surface to 110m at depth.
McDowell The McDowell vein is the longest gold bearing structure on the property. This main dislocated structure represent the Western McDowell vein, McDowell, the West Claude, the Russian Kid and the Beaudoin vein form one continuous orebody, The structures were followed in the underground development or intercepted by diamond drill holes for 1660 meters East West with an average width close to one (1) meter. The pyrite associated with the vein is present in millimetre-length veinlets within the mass of quartz and preferably in contact of the vein with the wall-rock. The Hanging wall and the footwall both contain coarse pyrite. Lower vein wall (foot wall) is characterized with fine pyrite and is disseminated over more than three meters. It is carrying gold bearing mineralization until a vertical depth of 400 meters. This vein was developed and followed with the underground levels 150, 300 and 425(ft) now level 45, 90 and 130 meters.
Talus The Talus vein is probably a secondary sub parallel branch structure to the McDowell vein whose junction point is located close to the section 6445mE . The Talus vein extends to the west of this junction point and is followed and identified up to the 6000mE coordinate. Some sampling of the vein was done in the drift at the 91m level. The actual known extension at depth is 400m.
Shaft Located near the mine shaft, the vein is encountered at level 45 meters. Gold bearing mineralization appears in a broad brecciated zone consisting of alternating silicified, pyritized and sericitized diorite bands, and thin milky quartz bands. The distribution of the gold contents is erratic although gold values increase at a depth The results of sampling of drift made by North Bordulac Mines show that there would be more than one gold bearing structure besides the shaft as North and South satellite veins to the shaft veins within that sector, these are not taken into account in the resource estimation at the moment.
Boucher During one site visit in November 2006, core from the new Rocmec diamond drill hole RS- 06-01 was reviewed and sampling instructions were given, the mineralized zone was spectacular with presence of visible gold associated with quartz carbonate vein. The zone is located at 165m on the footwall of the McDowell zone. The zone is very impressive and differs significantly by the amount of quartz and the mineralized core width. Visible gold was observed and special sampling procedures were taken to obtain a representative assay value.
Picture below present the aspect of the Boucher zone and the VG.
Figure 2: Picture of the core - Boucher zone at 490m
Figure 3: Visible gold in the core - Boucher zone
Boucher 2 The Boucher 2 zone is similar to the Boucher, but it is located 25 m behind to the north on the foot wall of the McDowell, locating it almost 190m from the McDowell, no other diamond drill holes have reached such a distance from the McDowell on the north side. It also indicates that mineralization is not limited to the actually known corridor but extent to the north of the previously known sectors.
The following picture of core shows the aspect of the Boucher 2 zone.
Figure 4: Picture of the core - Boucher 2 zone at 520m
A surface drill campaign intercepted several mineralized structures ranging from 1.16 to 34.75 meters. Moreover, in addition to intercepting at depth the previously known structures close to surface (McDowell, Talus and Shaft) a new mineralized structure, now known as Boucher, located at a depth of 400 meters (1300') with an apparent thickness of 34.75 meters was intercepted. The structures contain quartz veins with the presence of pyrite, characterizing the zones in an evident manner. Within the new Boucher structure, several visible sub-millimeter to millimeter size gold specks were observed from within the diamond drill core that identifies the new structure.
In addition to the first diamond drill hole RS-01-06 (refer to the news release dated November 9th, 2006), that intersected the Boucher gold zone at a depth of 400 metres with an apparent thickness of 34.75 metres grading 51.8 g/t over 0.82 metres and the second diamond drill hole, RS-02-07 (refer to the news release dated October 30th, 2007) located 140 metres from the first diamond drill hole having also intersected the Boucher gold zone grading 214 g/t gold over 2.4 m (true width not determined), the third diamond drill hole from the same section as RS-02-07 has also intersected the Boucher gold zone over a length of 14.9 m (true width not determined). This third interception point confirms the dip and continuity of the Boucher ore zone.
This third surface diamond drill hole RS-03-07 from the northern segment of the Property intersected the Boucher gold zone from 216.5 m to 231.4 m core length.
A subsequent diamond drill hole RU-02-08 intercepted the Boucher structure at a depth of -245 m over a thickness of approximately 20.1 metres. Two mineralised quartz veins were intersected grading 52.01 g/t Au over 61 cm and 13.35 g/t Au over 91 cm.
Diamond drill hole RU-07-08 intercepted the Boucher vein returning grades of 20.3 g/t Au over 1.8 metres. This diamond drill hole RU-07-08 intercepted the Boucher structure in the Western section of the mine some 180 metres more to the West than diamond drill hole RU-03-08. The Boucher structure now stretches more than 400 metres and is in close proximity (less than 200 metres) from existing infrastructure. So far, 10 holes drilled at different angles and depths have intercepted the Boucher structure.
A diamond drill hole intersected 3 mineralised veins located within a corridor of the Boucher structure that extends some 18.5 metres in width. The 3 mineralised veins returned grades of 18.65 g/t over 61 cm, 39.67 g/t over 61 cm and 22.35 g/t over 1.2 metres.
These results are located 210 metres below surface and within the same section as diamond drill hole RS-06-01 (see news release dated November 16th, 2006).
Drill hole RU-03-08 intercepted the mineralised Boucher structure some 200 metres west of previous drill holes. It is the eighth time that Rocmec intercepts the structure from below surface at different elevations ranging from 75 metres to 430 metres. The structure is open in both the eastern and western extensions and at depth and the grades encountered are very favourable for Rocmec’s thermal fragmentation mining method. Furthermore, the data gathered to date indicates that the mineralised structure is getting increasingly closer to the work areas currently being developed by Rocmec’s employees.
It is important to note that drill hole RU-02-08 is located in the same section and at the same height as drill hole RS-01-07 that also intercepted the Boucher structure and returned grades of 0.24 g/t Au over 40 cm. The sizeable grade differences of the two diamond drill holes are very characteristic of narrow-vein ore bodies located in the Abitibi region of Quebec and for this reason Rocmec has planned 10 additional drill holes before developing the Boucher zone.
NI43-101 dated March 2007 Système Géostat International of Blainville (Quebec) has authorized Rocmec to release results of its mineral resources. The undiluted and in-situ resource estimate within the ore zones is summarized as follows:
* Calculations are in metric units with results were rounded to reflect their true estimated nature. Mineral Resources are not Mineral Reserves, since Mineral Reserves have a demonstrable economic viability. Système Géostat International Inc. has verified and is not aware of any environmental, permitting, legal, claim title, taxation, socio-political, marketing or other constraints that could affect the resource estimate.
The resources now stand at 86,550 ounces in the Measured and Indicated category and an additional 456,900 ounces in the Inferred category. There is also a significant opportunity to expand the resources based on the kilometric-long gold corridor on the property. Mineral Resources Parameters
The Qualified Person responsible for the resource estimate is Mr. Claude Duplessis, P. Eng., of Système Géostat International Inc. The gold mineral resources were estimated on regular blocks on longitudinal sections by the inverse of distance method. The gold zones are Front West, McDowell, Talus, Shaft, Boucher and Boucher 2. The average true widths of the gold zones vary from 0.61 meters to 2.32 meters. High grade capping was done on the raw data and established at 45 g/t gold. Gold values were assigned to computer generated blocks (5 meters in Easting by 5 meters in Elevation by variable thickness in meters in Northing) using a maximum of 8 composite samples calculated from gold assay data sets of all drill holes individually in each of the mineralized zones. A grade times thickness approach was used for the accurate estimation of gold grades per blocks. Intersections were calculated on cross-sections and were projected on a East-West vertical projection. The longitudinal perimeters were constrained by the surface topography and the presence of intercepts laterally and at depth. The resource estimate was calculated using a specific gravity of 2.70 g/cm3. The known mineralization now lies from surface to a vertical depth of 400 meters and was delineated over a strike length of approximately 1.66 kilometers and individual widths of up to 4.10 meters. The complete National Instrument 43-101 Technical Report from Systèmes Géostat International Inc. is posted on SEDAR (at www.sedar.com) under Rocmec Mining Inc.
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