Evolving Defines Extensive Zone of Gold Mineralization

 

VANCOUVER, BC - Evolving Gold is focused on its discovery property - Rattlesnake Hills, Wyoming. Evolving has the option to acquire 100% of the Rattlesnake Hills project. The company has defined a zone of gold mineralization at the North Stock target approximately 450 meters long (1,480 ft), 200 meters wide (660 ft), and extending from surface to at least 550 meters deep (1,800 ft) where it remains open. It is also open to the west, east and south and may continue to the north as it wraps around the margin of the North Stock diatreme. Within this zone of gold mineralization 41.6% of all meters of core drilled by Evolving Gold fall within significant intervals of gold mineralization, defined as being at least six meters long with a grade cutoff of 0.25 gpt Au.

Similar gold mineralization has been intersected in the Antelope Basin target approximately 725 meters (2,380 ft) south of North Stock. Alteration patterns and structural features indicate potential continuity of gold mineralization between North Stock, Antelope Basin and South Stock, a further 250 meters (820 ft) to the south.

The Re-Assay Program Increases Grade at Rattlesnake Hills; The metallic screen fire re-assay program has increased the average grade of re-assayed intervals of gold mineralization by 10% to 0.96 gpt (0.028 opt Au) from 0.872 gpt (0.025 opt Au). The high grade intersections previously reported are 146.3 meters at 2.92 gpt Au (480 feet at 0.085 opt Au) and 131.1 meters at 2.84 gpt Au (430 feet at 0.083 opt Au) in holes 65 meters apart.

"The 10% increase in grade is particularly significant because of the large zone of gold mineralization," said Quinton Hennigh, Evolving Gold's President and Chief Geologist. "Our new drill program will expand our understanding of this gold system and will better define both the high grade mineralization and the geometry and potential for a large, open pit target."

The cutoff of 0.25 gpt gold is similar to the current cutoff for the open pit, heap leach gold mine at Cripple Creek, Colorado which is currently being mined by AngloGold Ashanti. The 0.96 gpt Au average grade for all significant intervals of gold mineralization at Rattlesnake compares favorably with the average grades mined in other large, open pit milling operations and development projects such as the Fort Knox mine (Kinross) in Alaska, the Lake Cowal mine (Barrick) in Australia, the Cadia open pit (Newcrest) in Australia, and the Boddington development (Newmont) in Western Australia.

The drill program scheduled to start in early May is planned for 30-35 core holes for a total of 12,000-15,000 meters (39,000-49,000 ft) of drilling. The drill program will test extensions of the higher grade mineralization at North Stock and will also test extensions and size potential of the halo gold mineralization, particularly to the south of the North Stock into the Antelope Basin and South Stock target areas. Evolving will also test for continuity of near-surface gold mineralization between the North Stock and Antelope Basin, approximately 725 meters (2,380 ft) south of North Stock and continue to the South Stock target, a further 250 meters (820 ft) to the south.

Evolving Gold has initiated bottle roll cyanide leach tests on halo mineralization. This is the first step in a program of metallurgical test work at Rattlesnake. Leach tests will be followed by additional metallurgical test work on the gravity and floatation concentration characteristics the gold mineralization.