Riverstone Resources Updates Gold Mineralization at Karma Project

Riverstone Resources (TSXV:RVS) provided an updated NI 43-101 compliant mineral resources estimate for the Karma golf project in Burkina Faso, West Africa. The estimate outlines a 27% increase for indicated in-pit minerals inventory and 23% for global mineral inventory from January 2012.

Highlights from the press release include:

• Global Mineral Inventory (inside and outside of Whittle pit shells) consists of Indicated gold mineralization totalling 2,252,000 ounces of gold in 68.8 Mt at an average grade of 1.02 g/t Au and Inferred gold mineralization totaling 1,115,000 ounces of gold in 40.4 Mt at an average grade of 0.86 g/t Au.
• A significant portion of the gold resources are at shallow depth (less than 200 metres vertical depth) and over 72% of the global mineral inventory is contained with the five Whittle pit shells.
• Total Indicated gold resources within five Whittle pits are 1,943,000 ounces of gold in 56.5 Mt at an average grade of 1.07 g/t Au.
• Total Inferred gold resources within five Whittle pits are 492,000 ounces of gold in 15.4 Mt at an average grade of 1.00 g/t Au.
• 80% of the resources within the Whittle pit shells are classified as Indicated gold resources.
• Mineralization remains open at depth and along strike in at least one direction for all deposits.
• This resource will be used as the basis for proceeding with a definitive Feasibility Study (FS) commencing in Q4, 2012 based on total Indicated resources of leachable material containing 1,030,000 ounces of gold, an increase of 24% compared to the resources used in the August 20, 2012 PEA

We are very encouraged with the increase of resources at Karma. This will provide a solid base for going forward with engineering and economic studies in 2012/2013 to establish Karma as one of the premier gold projects in West Africa. There also remains significant potential to continue to increase the gold resource with further drilling in the future.