Riverstone Resources Inc.
TSX VENTURE : RVS
FRANKFURT : 3RV

Riverstone Resources Inc.

August 25, 2010 12:48 ET

Riverstone Increases Gold Recovery at Nami by Core Drilling

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Aug. 25, 2010) - Riverstone Resources Inc. (TSX VENTURE:RVS)(FRANKFURT:3RV) is pleased to report the results from five diamond drill core holes drilled on the Company's Nami gold prospect in Burkina Faso, West Africa. The five diamond drill holes were drilled to twin five previously drilled RC holes to compare the gold values between the two drilling methods (See map: http://www.riverstoneresources.com/i/maps/100824_NamiDHPlan.jpg). The results from the diamond drilling average almost 21.8% greater than those reported from the RC holes. In addition diamond drill hole DDH-016, which was drilled deeper than its RC counterpart, intercepted a new, deeper mineralized zone grading 4.32 g/t gold over 13.0 metres, including 3.0 metres of 17.9 g/t gold.

"We thought that the previous RC drilling could be understating the gold grade due to incomplete sample recovery," commented M.D. McInnis, President and CEO of Riverstone. "It is clear from these results that future drilling of the Nami prospect will require core drilling to properly evaluate the deposit."

The core holes were designed to twin five low to modest grade RC holes. Higher grade RC holes, such as RC-056 which returned 25 metres grading 5.00 g/t or RC-049 which returned 12 metres grading 4.67 g/t, were not twinned.

Comparisons of the gold grade between the two drilling methods are presented n the table below:

RC Sampling Intercepts     Core Sampling Intercepts
        Au           Au  
Hole From To Length (g/t)   Hole From To Length (g/t) Increase
RC-048 28.0 54.0 26.0 0.736   DDH-012 28.5 54.5 26.0 0.727 -1.3%
RC-041 38.0 46.0 8.0 0.414   DDH-013 38.0 45.5 7.5 0.910 119.8%
  76.0 94.0 18.0 0.390     75.5 93.5 18.0 0.334 -14.2%
RC-043 20.0 40.0 20.0 0.270   DDH-014 20.0 39.5 19.5 0.335 24.1%
RC-055 8.0 72.0 64.0 0.446   DDH-015 6.5 71.0 64.5 0.609 36.4%
RC-079 78.0 108.0 30.0 0.192   DDH-016 78.0 109.0 31.0 0.226 17.3%
              176.0 189.0 13.0 4.332*  
            including 185.0 188.0 3.0 17.90*  
                Average Increase 21.8%
*Note DDH-016 was drilled deeper than its RC counterpart and intersected a new high-grade zone

The Nami artisanal site continues to be one of the most active in Burkina Faso, with the artisanal miners recently expanding their activity along the northern and north-western edge of the Nami site, where a 450 metre by 150 metre area is now the site of very intense shaft digging. The Company recently completed five additional diamond drill holes, and several of these were oriented holes designed to measure vein and shear directions in the holes. Assay results will be reported as soon as they are received from the laboratory.

Riverstone maintains a quality control program involving the use of repeat assays, inserted blanks and the use of certified standards from an accredited Canadian laboratory. All rock samples were assayed using standard fire assay with atomic absorption techniques, with samples grading over two grams gold per tonne re-assayed with a gravimetric finish, at the independent Abilab Burkina SARL laboratories in Ouagadougou, Burkina Faso, which is part of the ALS Chemex group.

Riverstone Resources Inc. is active in gold exploration in Burkina Faso, West Africa, where the company holds an extensive portfolio of six high quality exploration permits covering 2,300 square kilometres. For further information about the company and its activities, 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, P. Eng., President & CEO

Paul G. Anderson, P. Geo. is a Qualified Person for RVS and has reviewed and approved the contents of this release.

Certain statements made and information contained in this news release and elsewhere constitutes "forward-looking information" within the meaning of the Ontario Securities Act. Forward-looking statements are subject to a variety of risks and uncertainties which could cause actual events or results to differ from those reflected in the forward-looking statements, including, without limitation, risks and uncertainties relating to the interpretation of drill results and the estimation of mineral resources, the geology, grade and continuity of mineral deposits, the possibility that future exploration, development results will not be consistent with the Company's expectations, accidents, equipment breakdowns, title matters and surface access, labour disputes, the potential for delays in exploration activities, the potential for unexpected costs and expenses, commodity price fluctuations, currency fluctuations, failure to obtain adequate financing on a timely basis and other risks and uncertainties, including those described under Risk Factors in each management discussion and analysis. In addition, forward-looking information is based on various assumptions including, without limitation, the expectations and beliefs of management, the assumed long term price of gold, that the Company will receive required permits and access to surface rights, that the Company can access financing, appropriate equipment and sufficient labour and that the political environment within Burkina Faso will continue to support the development of environmentally safe mining projects. Should one or more of these risks and uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described in forward-looking statements. Accordingly, readers are advised not to place undue reliance on forward-looking statements.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Contact Information

  • Riverstone Resources Inc. - Vancouver Office
    Michael D. McInnis
    President
    604-801-5020
    info@riverstoneresources.com
    or
    Riverstone Resources Inc.
    Raju Wani
    Investor Relations
    403-240-0555
    or
    Riverstone Resources Inc.
    Ron Cooper
    Investor Relations
    604-986-0112
    www.riverstoneresources.com