Dorset
Northern Ontario, Canada
4. Dorset
The Property is located approximately six km north of the Eagle River producing mine, owned by Wesdome Gold Mines Ltd. (~2.0 Mt @ 9.1 gpt Au), within in the Mishibishu Greenstone Belt of northwestern Ontario and is 70 kilometres southeast of the 25 million ounce Hemlo gold camp. The Dorset Property consists of 2,480 acres (992 hectares) and hosts several gold occurrences.
The Dorset Zone was discovered by prospecting in 1995, when sampling and trenching exposed a gold bearing zone for 1.2km after follow-up of a gold showing found in 1989. The zone is unlike other gold zones of the Mishibishu Greenstone Belt, where the gold is generally hosted within quartz veins. The Dorset Zone is a primary hydrothermal stratiform gold system, with mineralization in an intensely albitized, iron-carbonatized system with finely disseminated 2-3% pyrite and arsenopyrite. The zone is generally 3.0 - 7.0 metres wide with widths up to 22.0 metres.
In 2006 and early 2007 Trelawney drilled in excess of 75 holes targeting the Dorset "B" zone and based on this drilling a National Instrument 43-101 resource was released on October 31, 2007. The initial estimate (using a 0.50 g/t gold cutoff) consists of an Indicated Resource of 780,000 tonnes grading 1.42 g/t gold and an Inferred Resource of 4.76 million tones grading 1.19 g/t gold). The complete report can be accessed at www.trelawneymining.com.
In 2008 the Property was further advanced with approximately 3,760 m2 of mechanical stripping on the "B" zone. Results from grab and channel sampling in the stripped area lead to Trelawney commencing a diamond drill program with eight holes completed in late 2008. On February 23, 2009 Trelawney released results from all eight holes (see news release at www.trelawneymining.com) examples of which include 7.52 g/t gold over a core length of 2.5 metres in hole DB -- 08-02 and 2.78 g/t gold over a core length of 3.3 metres in hole DB -- 08 -- 06.
In May 2009 Trelawney announced that it was moving ahead with preparations to extract a bulk sample from the "B" zone. Trelawney's plans include additional metallurgical testing, obtaining the necessary permitting and securing a contractor for road construction and the mining of the bulk sample. It also reported that it completed standard preliminary laboratory bottle roll cyanidation, flotation and an acid base accounting ("ABA") test on one small sample (approx. seven kilograms) collected from surface mineralization from "B" zone. The test indicated the sample is non-acid generating but it is refractory to cyanidation with approximately 20% gold recovery. Bottle roll leach and "ABA" testing was completed by Process Research Associates, Richmond, B.C. and flotation testing was conducted by metallurgical consultant, Westcoast Mineral Testing Inc., Vancouver. Due to the small sample size and with only one sample analyzed, Trelawney reported that the gold recovery may not be representative of the entire Dorset "B" zone; accordingly, Trelawney expects that additional testing will be completed on the "B" zone and since no metallurgical testing has been completed on the Dorset "Main" zone, it is expected that metallurgical testing from this area will also be done prior to finalizing plans to extract the bulk sample.
