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Hammond Reef A new resource estimate completed at Hammond Reef in October of 2008, indicates that an inferred resource of nearly 4.8 million ounces of gold, or 141.5 million tonnes at 1.05 grams per tonne using a 0.6 gram per tonne cut-off, is contained in the A Zone and 41 Zone. The deposit remains open along strike and at depth and over 97% of this resource is within 300 metres of surface. The resource which was audited by independent consultant Scott Wilson of Roscoe Postle Associates Inc. is National Instrument 43-101 compliant. Introduction The Hammond Reef project is the principal project of Brett Resources. The property optioned from Kinross Gold in March of 2006 was comprised of 132 claims and 1 mining lease totaling 9,577 acres, covering a strike length of 10 kilometres along the favourable structure and lithology hosting the gold mineralization. Since then Brett has staked or optioned an additional 53 claims or 22,200 acres contiguous to the original Hammond Reef claims. Hammond Reef has been subject to historic exploration, including almost eighteen thousand metres of diamond drilling in 85 holes from 1984 to 1998. Brett's Hammond Reef property hosts widespread low-grade gold mineralization within a 100 to 300 metre wide northeasterly-trending corridor of altered granitoid rocks. Mineralization is associated with fracture-controlled quartz vein stockworks and /or minor fine pyrite in variably altered granitoid rocks and mafic dykes within and adjacent to a foliated schist/fault zone. The property is located in the Sawbill Bay-Marmion Reservoir Area (claim map sheet G-558) in the Thunder Bay Mining Division, approximately 220 km west of Thunder Bay, Ontario. The Sawbill Bay Gold District has been the focus of intermittent gold exploration since the original discovery of the Hammond Reef property in 1895.
Geology The Hammond Reef property is predominantly underlain by the Marmion granitoid suite comprising fresh to intensely altered tonalite-trondhjemite; subordinate, unaltered granitoid gneiss; and minor mafic lenses, typically highly altered. Pegmatite dykes and pegmatitic segregation are common but volumetrically unimportant. Quartz (accessories, including gold) stockwork overprints all the phases, but is only very weakly developed in the mafic lenses ("dykes"). The stockwork is confined to a broad, anastamosing envelope of alteration measuring up to 6000 m wide on surface exposures in the Hammond Reef area. The braided alteration corridor can be walked-out along a 40 km, ~N-055 E strike length (Stone et al., 1995), essentially encompassing all the gold occurrences in the Victorian era Sawbill District. Exploration Active exploration programs were conducted at Hammond Reef by Falconbridge Gold in the 1980's and by Pentland Firth in the 1990's. Low gold prices saw the property revert back to Kinross Gold Corporation until March 2006 when Brett Resources optioned the property from Kinross. Prior to Brett's involvement, two separate low-grade gold mineralized zones, the "A" and "41" Zones, were delineated by a total of 83 diamond drill holes (18,060 metres). A mineral inventory prepared by Pentland Firth (*an historic, non- NI 43-101-compliant resource) indicated that the two zones contain an estimated 88 million tonnes grading 0.93 g/t Au, for a total of 2.64 million troy oz. gold. An internal Kinross memo dated January 2004 suggested that the resource is "inferred" and should be used only as a guideline. Exploration activities on the Hammond Reef resumed in the Fall of 2006, when Brett Resources Inc. got involved in a program of geological mapping/prospecting, systematic sampling of outcrops, soil sampling, core sampling for geochemical signatures and magnetometer surveys. Soil sample results outlined three strong NE-SW anomalous gold trends west of Snail Bay. Follow up of these 3 most important anomalies showed the presence of altered granitoid, often accompanied by pyrite and/or shearing. An important trenching program intended to confirm the results of the soil survey at Snail Bay was conducted at the end of the 2007 exploration season. A trenching program was also conducted on the optioned Sande & Stewart property. Trench results in the Snail Bay Area were very encouraging as three separate mineralized zones were detected, in the 5500E trench, with gold values ranging from 0.42 to 0.69 g/t Au and surface widths ranging from 18 to 25.5 metres. Slightly further to the north a parallel soil sample anomaly was investigated by trench 5600E South and returned 46.7 metres grading 0.72 g/t Au including 18.2 m of 1.23 g/t Au. This mineralized interval is open to the north. The mineralization is associated with pyrite (0.5 to 2%) bearing sericitized granitoid rocks. These early results indicate the presence of a new wide gold mineralized horizon which is open to the north.
On the Sande and Stewart property trenching exposed a 50 to 60 metre wide altered mineralized zone traceable over 450 metres strike length and is open. The schistose structural zones have the same orientation and appearance as those of the A Zone. Low grade surficial values were obtained, indicating the presence of anomalous gold values reminiscent of surface values in the trench results of a portion of the A zone, north of Mitta Lake. Deep drilling of these trenches indicated the presence of higher grade gold values of good width and continuity. Drill holes under trenching at Snail Bay and Sandy Stewart will take place in the near future. From October 19th 2006 to December 18 2007, some 23,987.5 meters of NQ diamond drilling in 88 holes was completed on the property. Drilling the NE end of the A Zone in the Mitta Lake area produced better than expected results. The Brett partial in-fill drilling showed that the A zone in this sector is wide and the grade improves at depth for holes such as BR-070 and BR-020 with 1.03 g/t Au over 127.5 metres and 1.27 g/t over 102 metres respectively. The continuity both at depth and laterally is also remarkably good. West of Mitta lake, near a large swamp, hole BR-062 intersected an impressive 1.59 g/t Au over 120 metres including a high grade zone of 3.14 g/t Au over 40.5 metres. Near the Marmion Reservoir at the SW end of the A Zone the new drilling also successfully delineated this more complex portion of the A Zone. Drilling from the mid 1980's revealed the presence of several Upper zones above the A Zone. These Upper zones are lower grade than the A Zone. The highlight from this portion of the A Zone are the results of holes BR-065 and BR-083 with 267 metres grading 1.02 g/t Au and 321 metres grading 1.12 g/t Au from 15 to 336 metres for hole BR-083. The A zone is interpreted as the zone of continuously sericitized granites and tonalite under the Upper zones. The Upper zones are more transitional zones of on and off sericitization. Looking at the gold distribution for these two holes it is obvious that the higher gold are not necessarily associated with strong alteration or the abundance of quartz veining or the presence of a well developed stockwork, although they can be. Usually a white quartz vein with dark marbling tends to have elevated gold values. This concurs well with the observation made by Barclay (1996, 1997). The one thing which is common to the presence of gold is definitely the presence of pyrite either as fine to medium disseminations as well as in stringers and as vein or fracture filling. Both BR-065 and BR-083 have a higher than average (for the A zone) pyrite content. Drilling on the shore of the Marmion Reservoir, beyond the Falconbridge drilling, returned 1.05 g/t Au over 52.5 metres, indicating that the A Zone is open to the SW. In terms of geology the A zone is very similar to the 41 Zone. Correlation of geological units has been hard to do. The alteration envelope is roughly parallel to the mineralization and has a similar dip. In the Mitta Lake area the sericitic alteration package is typically 150 to over 200 metres wide while near the Marmion Reservoir it can exceed 300 metres in width. Altered shear zones, referred too as schists by previous operators, are generally associated with mafic dykes throughout the A zone. They are commonly present near the footwall of the A zone. It is the best marker found to date. All interpretation of the alteration and of the mineralization is based on the attitude of the footwall contact. The 50 metre in-fill drilling of the 41 zone was very successful as most holes returned mineralized intervals consistent with what was expected based on previous results, basically reflecting continuity on a 50 metre spacing. New mineralization was also encountered to the west of the core of the 41 zone. Highlight is 2.09 g/t Au over 39 metres in hole BR-029. The gold mineralization of the 41 zone strikes at 055º and dips 30 to 40º to the SE. The shallow dipping mineralized zone is typically less than 30 to 80 metres wide and grade around 1 g/t Au. Good gold intervals are associated with sericitized granitoids but can also be associated with lesser altered granitoids providing quartz veins and veinlets or sulphides are present. High grade values are often associated with the presence of erratic narrow smoky quartz veins and veinlets To date only shallow drilling has been conducted on Mitta Lake with the best result being from hole BR-038 with 30 metres grading 0.94 g/t Au. Deeper drilling of the A Zone seems to indicate that there is a wider and higher grade core at depth. The next phase of drilling under Mitta Lake should focus on extending this deeper mineralized core. Metallurgy Brett Resources sent several samples of the A zone and the 41 Zone to SGS Mineral Services for metallurgical testing. The program was meant to evaluate the 12 individual zone composites on an equal basis for the purpose of identifying significant metallurgical differences relative to either ore zone (A Zone ore versus 41 Zone ore) or location within each ore zone. SGS commented that the apparent gold assay discrepancies screened metallics versus averaged individual assays versus calculated test heads do not exhibit a bias in one set of analyses versus any other. The differences observed throughout the head analysis and test work portions of this program may be due to a relatively fine (-150 mesh) "nugget" type effect. Average gold extraction by whole ore cyanidation was 91.5% from the A Zone and 92.5% from the 41 Zone. There was no clear correlation between gold extraction and either grind size or feed gold grade. There is very little apparent overall difference between the A Zone composites and the 41 Zone composites in terms of metallurgical response. Conclusion The surface exploration program undertaken by Brett, has shown the effectiveness of basic prospecting, soil sampling in areas of shallow till cover with abundant outcrop, coupled with trenching. By this method new parallel low grade mineralized zones have been discovered generating drill targets. The 41 zone shows relatively good continuity from sections 3500E to 3050E, a strike length of 450 metres. The average width of the 41 zone is about 50 metres and ranges from 30 to 80 metres. The 41 Zone drilling was shallow no more than 150 metres below surface. Subsequent drilling of the A Zone has shown the better grade and widths are in the 150 to 300 metre range below surface. A series of deeper holes are now necessary. The A zone is 850 metres long and open ended, dips 30 to 45º to the SW and is from 30 to over 300 metres wide. Drilling the NE end of the A zone near Mitta Lake in an area of sparse drilling revealed remarkable continuity, the greatest widths and grades which have exceeded expectations. At the other end near the Marmion Reservoir results are extremely encouraging with the widest intersections with grades above 1 g/t Au. The presence of multiple upper zones above the A zone are of great interest as they reduce the stripping ration for open pit mining With 59 new holes in the A zone the following has been observed:
Given the encouraging results from the A zone an aggressive drill program consisting of 95 holes for a total of 30,000 metres of delineation, in-fill and exploratory drilling is recommended. An NI 43-101 compliant resource calculation will be undertaken in 2008. An integrated program of detailed and reconnaissance exploration will be conducted consisting of mapping, prospecting, sampling, soil sampling and trenching, accompanied by geophysics. To view 43-101 Qualifying Report on Hammond Reef, click here. Our latest NI 43-101 resource calculation, announced on Oct. 15, 2008, will be posted to our website as soon as possible. Hammond Reef - Schematic Diagrams
Hammond Reef - Maps
Hammond Reef - 41 Zone
Hammond Reef - A Zone
Hammond Reef - Photos
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