Encouraging Sampling Results

Sunrise Diamonds PLC 29 February 2008 www.sunrisediamonds.com 29 February 2008 ENCOURAGING RESULTS FROM DIAMOND SAMPLING OF KIMBERLITE ON NORDIC JV CLAIMS IN FINLAND • Several Macrodiamonds Recovered From Pipes 10 And 17 • Coarse Diamond Distribution Indicated For Pipe 17 • Follow Up & Larger Scale Sampling Of Pipe 17 Recommended By Consultant __________________________________________________________________________ Sunrise Diamonds plc ('Sunrise' or 'the Company') is pleased to report encouraging results from a programme of microdiamond evaluation on kimberlites on its Nordic Joint Venture claims in the Kaavi-Kuopio region of central Finland . The results now being reported are from drill samples collected by Sunrise Diamonds from Kimberlite Pipes 10 and 17 during the Autumn of 2007 and are contained in a report received by the Company from its consultant Mineral Services Canada Inc., a specialist diamond consulting company. Mineral Services also reported on a sample from Kimberlite 14 but further work is required on these samples before detailed information can be released. Mineral Services has reported the presence of macrodiamonds (stones where at least one dimension exceeds 0.5mm) from each of Pipes 10 and 17 as well as a significant number of larger sized stones and a relatively coarse stone size distribution in the sample from Pipe 17. The diamonds recovered from Pipe 17 have positive value characteristics, most being colourless and of moderate to good quality. Pipe 17 is considered to have further commercial potential and Mineral Services has recommended follow up and larger scale sampling of Pipe 17 to confirm the grade potential. The primary aim of the 2007 drilling programme was to quantify the microdiamond content of the three kimberlites sampled, to assess the diamond value characteristics of the microdiamonds and, if possible, to undertake modelling of the grade of commercial-sized stones. Samples of 202.76kg, 209.82kg, and 134.96kg from, respectively, Kimberlites 10, 14 and 17 were subject to caustic fusion at SGS Lakefield Research Africa in Johannesburg. The resulting residues were shipped to Mineral Services laboratory in Cape Town for recovery and description of microdiamonds. A breakdown of the diamonds recovered from Pipes 10 an 17 (by sieve size) is as follows: +----------+-------+---------------------------------------------------------+ | | |Sieve size (mm) | +----------+-------+-----+-----+-----+-----+-----+-----+-----+------+--------+ |Kimberlite|Sample |.105 |.150 |.212 |.300 |.425 |.600 |.850 |1.180 | Total | | |Weight | | | | | | | | | | |Number | (kg) | | | | | | | | | | +----------+-------+-----+-----+-----+-----+-----+-----+-----+------+--------+ |#10 |202.76 | 4 | 1 | 2 | 2 | 2 | 0 | 0 | 1 | 12 | +----------+-------+-----+-----+-----+-----+-----+-----+-----+------+--------+ |#17 |134.96 | 14 | 4 | 1 | 1 | 3 | 0 | 2 | 0 | 25 | +----------+-------+-----+-----+-----+-----+-----+-----+-----+------+--------+ Three macrodiamonds were recovered from Pipe 10 and five from Pipe 17. The size of the macrodiamonds recovered from each pipe is given by screen size in the following table: Kimberlite Size Diamond Measurements Measurements Measurements Number fraction Number z (mm) (um) x (mm) y (mm) #10 425 1 0.99 0.47 0.62 #10 425 2 0.77 0.52 0.62 #10 1180 1 1.70 0.93 1.57 #17 425 1 0.67 0.52 0.55 #17 425 2 0.67 0.50 0.50 #17 425 3 0.75 0.50 0.57 #17 850 1 0.99 0.75 0.99 #17 850 2 1.02 0.75 0.87 Due to the paucity of a statistically reliable number of stones in the larger sieve classes, grade modelling was not possible on these samples. However, the results of an evaluation of the microdiamond populations, in particular the size distribution, and detailed evaluation of the quality of the microdiamonds allowed Mineral Services to draw a number of conclusions regarding the commercial potential of the pipes. In addition to the positive conclusions reached on Pipe 17 discussed above, the diamonds recovered from the sample from Pipe 17 showed a number of positive features relating to their quality. Several of the larger stones are white (colourless) octahedrons and dodecahedrons with good form and moderated to good clarity. Kimberlite Pipe 10, a 2 hectare pipe, returned the largest stone from the programme (a 1.7mm x 157mm x 0.93mm fairly good quality white macle). However, this stone is considered by Mineral Services as an outlier and based on very low stone recoveries the grade potential of this body is considered to be low. In addition stone quality overall is poorer than for Pipe 17 and no further work was recommended by Mineral Services on Pipe 10. The results from Kimberlite 14, believed to be a dyke, are not being reported here as further quality control is needed to categorise the recovered diamonds. However, initial results suggest an unfavourable stone size distribution and no further work is recommended by Mineral Services on Kimberlite 14. Sunrise Diamonds notes, however, that the character of kimberlite dykes is often variable along strike and for that reason considers further work is warranted to follow the kimberlite along strike where it is open. In addition to continuing its programme aimed at the discovery of new kimberlites, the Company will now evaluate the tonnage potential of the best of the Kaavi-Kuopio pipes, including Pipe 17, as the first stage in a scoping study to evaluate in more detail the concept for the construction of a central processing plant for development of kimberlites in the Kaavi-Kuopio cluster. Further information: Patrick Cheetham, Sunrise Diamonds plc. Tel: +44 (0)1625-505947. Mobile: +44(0) 7767 458751 Ron Marshman/John Greenhalgh, City of London PR Limited. Tel: +44(0)20-7628-5518 Brett Miller/Roxane Marffy, Ruegg & Co Limited. Tel: +44(0) 20 7584 3663 Background. Sunrise Diamonds plc is earning up to a 75% interest in a number of claims from Nordic Diamonds Inc. in the Kaavi-Kuopio kimberlite cluster in Finland and as a result holds, or is earning an interest in 16 of the 20 known kimberlites in this cluster. It has also discovered seven kimberlites in a new cluster in the Kuusamo area of Northern Finland. Three of the kimberlites bodies in the Kaavi-Kuopio area, Kimberlites, 12, 21 and 13 have been shown by historic bulk sampling to have grades between 15 and 26 carats per hundred tonnes. Whilst individually these pipes may be too small for development, they may have commercial potential to provide feed for a central processing plant and so work in this area has focused on the evaluation of other known pipes, for example Pipes 10, 14 and 17 and the discovery of new kimberlites. Note: The information in this release has been compiled and reviewed by Mr. Patrick Cheetham (MIMMM, MAusIMM) who is a qualified person for the purposes of the AIM Guidance Note for Mining Oil & Gas Companies issued on March 16, 2006. Mr Cheetham is a Member of the Institute of Materials, Minerals & Mining and also a member of the Australasian Institute of Mining & Metallurgy. This information is provided by RNS The company news service from the London Stock Exchange
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