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Press release from Marketwire

Rockgate Increases Mineral Resources at Falea Uranium-Silver-Copper Project, Mali

Tuesday, December 04, 2012

Rockgate Increases Mineral Resources at Falea Uranium-Silver-Copper Project, Mali07:00 EST Tuesday, December 04, 2012VANCOUVER, BRITISH COLUMBIA--(Marketwire - Dec. 4, 2012) -Rockgate Capital Corp. (TSX:RGT) (the "Company" or "Rockgate") is pleased to announce updated mineral resource estimates ("MRE") for the Falea Uranium-Silver-Copper Project located in Mali, West Africa. The new MRE reflects the addition of 396 drill holes completed in late 2011 and the first half of 2012 to the January 2012 MRE. Falea is an advanced exploration project comprising three permits totalling 267 square kilometres located in western Mali, West Africa. The Falea Project is 100%-owned by Rockgate.Table 1: Updated Falea Mineral Resources - (0.03% U3O8Cut-off Grade)CategoryTonnes MtU3O8 (%)Ag (g/t)Cu (%)U3O8 (Mlbs)Ag (Moz)Cu (Mlbs)M & I15.670.086550.2229.5827.9474.22Inferred15.350.050180.2415.698.9181.19Table 2: January 2012 Falea Mineral Resources - (0.03% U3O8Cut-off Grade)CategoryTonnes MtU3O8 (%)Ag (g/t)Cu (%)U3O8 (Mlbs)Ag (Moz)Cu (Mlbs)M & I9.700.094630.2020.0319.4843.67Inferred3.740.093440.227.635.2418.48Mineral Resources - Key Developments48% increase in M & I pounds of U3O8to 29.58 million pounds.43% increase in M & I ounces of silver to 27.94 million ounces.70% increase in M & I pounds of copper to 74.22 million pounds.48% increase in Measured pounds of U3O8 to 4.29 million pounds. 61% increase in Measured and Indicated ("M & I") tonnes. Increase in M & I resources AND expansion of Inferred resources. 106% increase in Inferred pounds of U3O8 to 15.69 million pounds. Addition of potential open-pit resources at Bodi, including 1.70 million M & I pounds U3O8. 22.30 million M & I pounds U3O8 and 26.14 million ounces of silver in North Zone, adjacent to possible underground access point from north side of the plateau at Bodi. North Zone Upper Indicated and Inferred resources include new high-grade South Block. East Zone upgraded from exploration target to Indicated and Inferred mineral resource. Average mineralized widths for various areas of M & I mineral resources are: North Zone - 2.29 metres (North Deep) to 5.56 metres (PES) Central Zone - 4.81 metres Bodi - 0.68 metres (Bodi Deep) to 0.86 metres (Bodi Upper) East Zone - 4.50 metres Resource estimate includes 838 drill holes completed as of July 31, 2012. The Mineral Resource estimate was prepared by Minxcon (Pty) Ltd ("Minxcon") of Johannesburg, South Africa, according to the definitions stated in the Standards of Disclosure for Mineral Projects, as defined by the Canadian Institute of Mining ("CIM"). The Technical Report, prepared in accordance with NI 43-101 will be filed on SEDAR ( within 45 days. Mr. Charles Muller, Director and Head of Geology for Minxcon, Mr. Antonio Umpire, Mineral Resource Manager, and Mr. J Mamphey, AusIMM, Senior Resource Geologist, West Africa, are the Qualified Persons as defined in NI 43-101.Intensive metallurgical testwork at ANSTO and engineering studies by the DRA Group over the last twelve months have confirmed the recoveries of uranium, silver and copper on a consistent basis, and hence the contribution of all these metals that may be expected from the extraction process and the indicated operating costs. This has culminated in the commencement of a Pre-Feasibility Study by the DRA Group. The financial model based upon, inter alia, the afore-mentioned results together with an enhanced understanding of the orebody and possible mining and metallurgical solutions has indicated that a cut-off grade of 0.03% U3O8 is appropriate when determining the resource.Tables 2 and 3 below state the new mineral resources by category and mineralized area at both 0.03% and 0.04% U3O8 cut-off grades.Table 2: Falea Mineral Resources - 0.03% U3O8Cut-off GradeCategoryAreaTonnes MtU3O8 (%)Ag (g/t)Cu (%)U3O8 (Mlbs)Ag (Moz)Cu (Mlbs)MeasuredNorth Upper1.390.140790.204.293.526.05IndicatedNorth Upper4.990.100850.1711.0013.7218.99North Deep2.890.110960.227.018.9114.25Central Upper4.750.044100.254.651.5326.68Bodi Upper0.370.150100. Deep0.270.08170.290.480.061.71East1.010.04230.190.930.104.20Total14.280.080530.2225.2924.4368.17M & ITotal15.670.086550.2229.5827.9474.22CategoryAreaTonnes MtU3O8 (%)Ag (g/t)Cu (%)U3O8 (Mlbs)Ag (Moz)Cu (Mlbs)InferredNorth Upper3.320.050200.223.662.1115.85North Deep1.510.090800.222.993.907.42Central Upper7.420.03490.255.582.1440.57Central Deep1.710.040110.261.510.639.99Bodi Deep0.300.15070.270.990.071.78East1.090.04020.230.960.075.59InferredTotal15.350.050180.2415.698.9181.19Table 3: Falea Mineral Resources - 0.04% U3O8Cut-off GradeCategoryAreaTonnes MtU3O8 (%)Ag (g/t)Cu (%)U3O8 (Mlbs)Ag (Moz)Cu (Mlbs)MeasuredNorth Upper1.200.152810. Upper4.120.113960.1810.2512.7115.91North Deep2.750.110990.236.678.8013.67Central Upper1.940.060110.262.560.6711.06Bodi Upper0.330.160100.311.160.112.24Bodi Deep0.220.09080.280.440.051.37East0.420.05240.200.480.051.82Total9.780.100710.2121.5522.3946.07M & ITotal10.980.110720.2125.5825.5251.50CategoryAreaTonnes MtU3O8 (%)Ag (g/t)Cu (%)U3O8 (Mlbs)Ag (Moz)Cu (Mlbs)InferredNorth Upper1.560.064310.212.191.567.25North Deep1.480.091820.222.973.897.26Central Upper0.110.05090. Deep0.150.064310. Deep0.300.15070.270.990.071.78East0.350.05020.280.390.022.17InferredTotal3.950.080450.236.865.7219.83Resource Estimate ParametersEstimate conforms to NI 43-101, Standards of Disclosure for Mineral Projects, utilizing definitions and guidelines from CIM Standards on Mineral Resources and Reserves. Estimate is based on 838 diamond drill holes and 3,148 1-metre composite samples. A geological cut-off of 100 ppm uranium was applied to define the mineralized horizon and 3D wireframes of the mineralized horizon were constructed. A block model was constructed using 10m (x), by 10m (y) by 1m (z) blocks. Nine geostatistical domains were established. Both ordinary kriging and simple kriging methods of geostatistical estimation were employed. Based on 340 drill core samples, a bulk density of 2.654 g/cm3 was applied to all mineralised zones. Mineral Resources were classified based on several parameters including quality assurance and quality control ("QAQC"), geological confidence, number of samples used to estimate a specific block, distance from sample (variogram range), kriging efficiency and others. Conversion to Oz - kg:Oz - 1:32.15076; Conversion to lb - 1 kg : 2.2046lb. This news release was prepared by Christopher J. Wild, P.Eng., Vice-President Exploration for Rockgate, a Qualified Person as defined by NI 43-101. Please refer to the Technical Report for further information regarding the Mineral Resource estimate contained herein, a full description of the key assumptions, parameters, and methods used to estimate the aforementioned Mineral Resources, and a general discussion of the extent to which this Mineral Resource estimate may be materially affected by any unknown environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues.Please visit our website at BEHALF OF THE BOARD OF DIRECTORS OF ROCKGATE CAPITAL CORP.Karl Kottmeier, PresidentFOR FURTHER INFORMATION PLEASE CONTACT: Neither Toronto Stock Exchange nor its Regulation Services Provider (as that term is defined in the policies of the Exchange) accepts responsibility for the adequacy or accuracy of this release. Contact Information: Rockgate Capital Corp.Karl KottmeierPresident(604) 678-8941Rockgate Capital Corp.Kirk GamleyVP Corporate Development(604) 678-8941(604) 689-7442 (FAX)