Riverstone Resources Inc.
TSX VENTURE : RVS

Riverstone Resources Inc.

June 11, 2007 09:00 ET

Riverstone Drills New Gold Zones on Biliga

VANCOUVER, BRITISH COLUMBIA--(Marketwire - June 11, 2007) - Riverstone Resources Inc. (the "Company") (TSX VENTURE:RVS) is pleased to report results from several properties collectively known as Bissa East, in Burkina Faso, West Africa. Surface rock sampling and drilling on both the Biliga and Tangapella Exploration Permits has delineated five separate gold zones in close proximity to the Sabce shear zone and a parallel structure.

The Company's Bissa East project comprises four contiguous properties: Tangapella, Sebila, Biliga and Malgtaba. A recently completed Rotary Air Blast ("RAB") drilling program on the Biliga permit has outlined two NE trending zones of gold mineralization within a structure which parallels the Sabce shear zone. The Sabce shear is a regional scale structure that is host to numerous artisanal gold mining sites along a strike length of at least 130 kilometres, including the Bissa Hill gold deposit, currently being developed by High River Gold Mines.

The Biliga permit contains a number of gold-in-soils geochemical anomalies, defined by the Company in late 2006, and further refined in a follow up detailed soil survey completed in February of 2007. The Biliga RAB drilling comprised 2,354 metres in 98 drill holes. All holes were drilled vertically, and the true widths of the zones are unknown. The RAB drilling has defined two parallel, northeast striking gold zones within and adjacent to the shear zone, each of which appears to exceed 800 metres in length. The best RAB drill results are summarized below:



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FROM TO CORE INTERVAL GRADE
HOLE NO. (metres) (metres) (metres) (g/t gold)
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BLG-07-023 3 24 21 0.91
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including 6 15 9 1.67
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BLG-07-030 0 21 21 0.37
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including 12 15 3 2.09
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BLG-07-053 9 24 15 0.47
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BLG-07-054 15 24 9 0.46
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BLG-07-059 0 24 24 0.18
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including 0 3 3 1.38
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BLG-07-064 0 27 27 0.50
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including 9 12 3 1.47
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BLG-07-069 0 12 12 0.40
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BLG-07-075 0 24 24 0.64
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including 6 9 3 1.37
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and 15 18 3 1.00
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The Company is carrying out surface evaluation of these anomalies to establish drill targets.

The Company also completed 1,884 metres of Reverse Circulation ("RC") drilling on the adjacent Tangapella permit. The drilling was designed to follow up on two east-west to east-northeast trending gold zones adjacent to the Sabce Shear Zone, which were defined by gold-in-soil geochemical anomalies. Previous RAB drilling had returned values of 3.27 g/t gold over 9 m; 1.01 g/t gold over 12 m and 1.59 g/t gold over 3 m. The RC drilling confirmed the presence of higher-grade gold zones within two broad, steeply dipping zones of lower grade gold mineralization. The best results were 0.35 g/t gold over 38 m in TGP-RC-003, 0.51 g/t gold over 18 m in TGP-RC-004, 4.31 g/t gold over 4 m in TGP-RC-005, 0.48 g/t gold over 16 m (including 1.11 g/t gold over 2 m) and 1.00 g/t gold over 2 m in TGP-RC-007, 0.68 g/t gold over 2 m in TGP-RC-009 and 1.66 g/t gold over 2 m in TGP-RC-015.

The RC drilling program suggests that the mineralized zones are more deeply weathered than initially thought, with gold values nearer to surface strongly leached. The gold-in-soils anomaly continues for at least four kilometres along strike, and the company will continue to explore this and other anomalous zones on the permit.

The Company maintains a rigorous quality control program involving the use of repeat assays, check assays at independent labs, and the use of verifiable blanks and standards from an accredited Canadian lab. All samples were assayed using standard fire assay with atomic absorption techniques, with samples grading in excess of 2.00 g/t gold 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.

For further information about the Company and its activities in Burkina Faso, please refer to the Company's website at www.riverstoneresources.com and on www.sedar.com.

ON BEHALF OF THE BOARD

Michael D. McInnis, P.Eng., CEO & President

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.

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

Contact Information

  • Riverstone Resources Inc.
    Michael D. McInnis
    President
    (604) 801-5020
    (604) 801-6075 (FAX)
    or
    Riverstone Resources Inc.
    Raju Wani
    Investor Relations
    (403) 240-0555
    or
    Riverstone Resources Inc.
    Ron Cooper
    Investor Relations
    (604) 986-0112
    Email: info@riverstoneresources.com
    Website: www.riverstoneresources.com