Vancouver Saskatchewan diamond explorer Shore Gold (SGF-T) has recovered diamonds weighing up to 19.25 carats from a 312-carat parcel collected as part of a bulk-sampling program at the Star kimberlite in Saskatchewan’s Fort a la Corne district.
The Saskatoon-based company recovered the large diamond and several others from the processing of 1,538.93 tonnes. Three other large stones weighed 17.72, 8.95, and 5.7 carats, respectively.
The bulk-sampling program is part of a pre-feasibility study to define resources compliant with National Instrument 43-101 standards, and to assess the viability of a potential underground mining operation, which typically requires a diamond valuation parcel of between 4,000 to 6,000 carats.
Star recovered 1,419 commercial sized diamonds (greater than 1.18 millimetre square-mesh screen) collectively weighing 312.33 carats from six recently processed batches. This total includes 54 diamonds greater than 1 carat in size. The color of the 58% of the recovered diamonds has been classified as white, with a further 15% classified as off-white. The new results bring the total number of diamonds recovered by Shore to 2,012.51 carats, from 11,289.16 tonnes of kimberlite processed as part a 15,000-tonne pre-feasibility sample.
Shore had previously carried out an initial bulk-sample, which combined with the pre-feasibility sample, brings the total of diamonds recovered to more than 6,000 carats. Valuations of newly recovered diamonds are in progress, and results will be incorporated into the ongoing $44-million pre-feasibility study.
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