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VANCOUVER, BRITISH COLUMBIA--(Marketwire - Feb. 12, 2009) - Sunridge Gold Corp., (TSX VENTURE:SGC) announces positive metallurgical results from the Gupo Gold Deposit on the Asmara Project, Eritrea. Gold cyanide extraction tests on four samples were conducted by SGS Mineral Services, Cornwall, UK ("SGS") resulting in 95% to 98% gold recovery. Sunridge intends to complete a new resource estimate and scoping study on the Gupo Gold Deposit in order to determine the economics of a low-cost, open-pit, heap-leach gold operation. Sunridge has $6.5 million in its treasury and is well funded to carry out these activities.
Average Cyanide Leach Test Gold Recoveries:
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Sample % Au Extraction at 48hrs, average
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Gupo Oxide 98.4
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Gupo Sulphide 95.6
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The mineralized material at Gupo is divided into an upper oxide zone and underlying sulphide zone. Two representative samples from recent diamond drill holes completed by Sunridge were taken from each zone. SGS's test work was designed to investigate the amenability of the samples to cyanide leaching with the samples being subjected to the following testing procedures:
- Head assay (including gold and silver by screened metallic's protocol);
- Grind calibrations;
- Cyanide leach testing (over 48 hours) at three different grind sizes (in duplicate).
Conventional bottle roll cyanidation was performed by conducting tests at three grind sizes for each of the four types of material. The table below details the average gold recovery to the cyanide liquors for all tests.
Cyanide and lime consumptions were low for all tests. The ratio of free cyanide to either copper or zinc was monitored and found to be well in excess of the minimum requirement.
Gupo Gold Resource Update
Currently, the Gupo Gold Deposit contains a NI 43-101 compliant inferred gold resource of 1,965,000 tonnes grading 2.99 grams per tonne gold containing 189,000 ounces of gold. This resource does not include results from 26 holes that were reported in a January 15, 2007 news release.
Some of the best results from that program include:
GG-001-RD: 38.50 metres grading 2.12 g/t gold
GG-002-R: 26.00 metres grading 1.03 g/t gold
GG-008-D: 59.00 metres grading 1.52 g/t gold, incl. 24.0 metres grading 3.11 g/t gold
GG-013-RD: 23.00 metres grading 1.12 g/t gold
GG-015-RD: 50.00 metres grading 1.35 g/t gold
Management of Sunridge believes that the Gupo Gold Deposit could have the potential to be a low cost, open-pit, heap-leach gold mine based on the excellent local infrastructure, favorable terrain for open-pit mining and the potential for increasing the size of the resource based on new drill results. In addition, Gupo's proximity to Sunridge's large Emba Derho Deposit could provide additional oxide gold mineralized material to any future operations. Emba Derho has an oxide gold resource of 3.5 million tonnes grading 0.84 grams per tonne gold containing 95,000 ounces of gold in a NI 43-101 compliant indicated resource.
Emba Derho Scoping Study Update
The scope of the preliminary assessment study (scoping study) has been expanded with a specific focus on utilizing the excellent infrastructure that exists in and around the Asmara Project, such as local electrical power and existing rail lines. The study will also examine the impact of lower costs of steel, fuel and other costs on the overall economics of the scoping study. The expanded scoping study should be completed by the end of the first quarter of 2009.
About Sunridge
Sunridge Gold Corp. is a mineral exploration company focused on the acquisition, exploration, discovery and development of precious and base metal projects. The Company has cash of $6.5 million, 62.2 million shares outstanding and trades on the TSX Venture Exchange under the symbol SGC. For additional information on the Company and its projects please view the slide show on our website at [ www.sunridgegold.com ] or call Don Halliday or Greg Davis at the numbers listed below.
Qualified Person
The Qualified Person for the release of this exploration information is Michael Hopley, President and Chief Executive Officer of Sunridge Gold Corp.
SUNRIDGE GOLD CORP.
Michael Hopley, President and Chief Executive Officer
The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of the content of this News Release.