March 4, 2008

Hudson recovers large gem diamonds


by Jo Black

Hudson Resources Inc. announces diamond results from the processing of approximately 160 tonnes of kimberlite extracted from the Garnet Lake dike in Greenland. The diamond laboratory at the Saskatchewan Research Council reported that a number of large clear colourless fragments are likely to have been derived from a single 3.5 to 4.0 carat diamond. The largest intact diamond recovered was a 2.51 carat, clear gem quality octahedron measuring 8.9mm x 8.2mm x 7.5mm. The next 25 largest stones (+2.36mm - 4750mm square mesh screen) have a total weight of 8.69 carats, a 212% increase in this size fraction over the previous bulk sample. The quality of the larger stones is exceptional and is described as colorless and clear.

We are very pleased to have successfully demonstrated that the 100% controlled Garnet Lake dike hosts a population of larger, high quality diamonds, stated James Tuer, President of Hudson. These diamonds are the most important component of diamond project economics. The recovery of large diamonds combined with the strong potential to host a significant tonnage of diamondiferous kimberlite is an excellent step towards defining an economic project.

The primary objective of this bulk sample program was to determine if larger stones were present in the kimberlite by crushing to a much larger size fraction than was done with the previous 47 tonne mini-bulk sample completed in early 2007. As a result, Hudson has successfully recovered a significant number of larger diamonds. As evidenced by these and previous results, due to the very coarse distribution of the diamonds, Hudson can expect to recover increasingly larger diamonds with greater sample sizes.

A total of 252 commercial sized diamonds were recovered in the bulk sample. In comparison to the 2007 47 tonne sample, the average individual diamond stone size improved by 240%, from 0.040 carats to 0.096 carats per diamond. The total number of diamonds recovered by the X-ray and grease circuit, representing approximately 140 tonnes, was 191 stones weighing a total of 18.36 carats. The balance of the sample (approximately 20 tonnes) was treated by caustic fusion in order to evaluate diamond liberation during processing. This material produced 96 macrodiamonds totalling 1.44 carats from 940.2kg of kimberlite concentrate.

Story link: Hudson recovers large gem diamonds




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