Riverstone Resources Inc.

Riverstone Resources Inc.

August 02, 2005 18:21 ET

Riverstone Resources Inc.: Exploration Work Continues in Burkina Faso

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Aug. 2, 2005) - Riverstone Resources Inc. (the "Company") (TSX VENTURE:RVS) is pleased to provide an update on its exploration activities on its mineral permits in Burkina Faso, West Africa. Work has included drilling (both reverse circulation and diamond coring), surface mapping, rock and soil sampling and limited geophysical surveys. Highlights to date include the receipt of high-grade gold values from rock samples collected from new artisanal sites on the Company's Rambo, Kao and Yaramoko permits, particularly those from the new Bonguirga artisanal site on the Rambo permit, which returned values of 394.8 grams gold per tonne ("g/t Au") and 66.8 g/t Au. Results from drill holes are not yet available and will be reported once they have all been received and interpreted.

Rambo Gold Permit

On the Company's original permit, Rambo, work has included prospecting and rock sampling in several new artisanal sites, as well as drilling two diamond drill holes in an effort to extend the gold zone in the area of previous drilling. Rock sampling at the Bonguirga site, a new artisanal site located about 500 metres northeast of the Rambo mineralized zone returned some impressive gold values in rock samples. Two selected samples of quartz vein material from the site assayed 394.8 g/t Au and 66.8 g/t Au. The two diamond drill holes have intersected altered, graphitic rocks with disseminated pyrite and arsenopyrite, near an intrusive contact. This is the same setting for several of the earlier reported gold intercepts for this zone.

Kao Gold Permit

The Kao permit is contiguous with the south side of the Rambo permit. Soil sampling in areas of new artisanal workings has outlined one very strong gold anomaly, with dimensions of about 1 kilometre ("km") by 2 km within the plus 10 parts per billion ("ppb") gold contour. Peak soil values range from 270 to 1,460 gold. Two other slightly smaller anomalies have been delineated elsewhere on the permit. Several rock samples collected from scattered areas of artisanal workings returned very encouraging gold values. Among these are numerous samples grading greater than 0.5 g/t Au, with two notable samples, from different areas, grading 10.1 and 13.1 g/t Au.

Ligidi Gold Permit

On the Ligidi property, geochemical sampling last fall established an extensive area approximately 13 km long and 3 km wide with gold values in soils generally over 15 ppb. Within this area are several anomalous zones where soil gold values are generally over 50 ppb and as high as 2,600 ppb. The largest of these covers an area approximately 4 km in length and up to 2 km in width. Several other anomalous zones are at least 1 km long and up to 1 km in width. The recent work focused on reverse circulation drilling of several zones of interest within the broad anomalous area. A total of eight holes were drilled to test three separate areas.

Yaramoko Gold Permit

On this permit, about 200 km west-southwest of Ouagadougou, work has been concentrated on mapping, soil sampling, prospecting and rock sampling. Several rock samples from scattered areas on the permit have returned significant results, including 16 samples with values ranging from 1.0 to 11.9 g/t Au. Soil sampling in the area of recent artisanal workings has outlined several gold in soil anomalies, with many values exceeding 100 ppb gold. The largest of these anomalous areas measures about 500 m wide by 3.5 km long and covers an area with numerous active workings. This and several smaller anomalous areas require follow-up.

Solna Gold Permit

No recent work has been completed on this permit where extensive gold values were reported earlier this year. The permit is located in the far north-east part of the country, about 250 km north-east of Ouagadougou. Access to this area is limited during the current rainy season, and drilling of several attractive targets is planned for later in the year.

"We're looking forward to continuing comprehensive exploration programs on all of our Burkina Faso permits," commented M.D. McInnis, President of Riverstone. "The results from our programs so far suggest several large mineralized systems and the possibility for significant gold discoveries." The Company plans to resume an aggressive exploration program later this fall after interpretation of results from the current work.

For further information about Riverstone Resources, including previous news releases detailing earlier results, please refer to the Company's website at www.riverstoneresources.com and under the Company's profile at www.sedar.com.

On behalf of the Board,

Michael D. McInnis, President

Michael D. McInnis, P. Eng. is a Qualified Person for RVS and has reviewed and approved the contents of this news release.

The TSX Venture Exchange does not accept responsibility for the adequacy or the accuracy of this release.

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