Ivanhoe Mines Makes Another High-Grade Discovery of Gold and Copper at the Oyu Tolgoi Project in Mongolia

Ivanhoe Mines Makes Another High-Grade Discovery of Gold and Copper at the Oyu Tolgoi Project in Mongolia

John Macken, President and CEO of Ivanhoe Mines Ltd., and Doug Kirwin, Executive Vice-President, Exploration, today announced additional details of the exploration drilling at the company’s Oyu Tolgoi Project in Mongolia that has discovered a new zone of high-grade gold and copper mineralization, which has characteristics of the earlier high-grade discoveries at the Hugo Dummett and Southwest Oyu deposits.

The Oyu Tolgoi mineralized structural corridor, as currently defined, now has a total strike length in excess of 20 kilometres – encompassing Oyu Tolgoi in the centre and more recent extensions to the south and north onto the joint Ivanhoe-Entree agreement area.

The latest discovery is highly significant because it indicates that there is a strong probability of an additional gold-rich copper deposit between the previously discovered Heruga Deposit and the Southwest Oyu Deposit. An objective of the ongoing drilling is to establish whether there is a continuous, high-grade mineralized connection between the major Oyu Tolgoi desposits to the north and the more recently discovered Heruga Deposit to the south.

The discovery, which is open to expansion in all directions, is within Ivanhoe Mines’ 100%-owned Oyu Tolgoi Mining Licence. It is located in the three-kilometre gap between the Heruga Deposit, which was discovered on the joint Ivanhoe-Entree licence area in 2007, and Ivanhoe’s 100%-owned Southern Oyu deposits that were delineated by Ivanhoe’s earlier exploration between 2001 and 2005.

Deep diamond drilling on a section 1.5 kilometres north of the Heruga Deposit and 1.5 kilometres south of the Southwest Oyu Deposit targeted a gradient-array Induced Polarization (IP) chargeability anomaly that extends from Heruga to Southwest Oyu. Zones of high-grade copper and gold mineralization were intersected over a distance of 369.3 metres grading 0.83 g/t gold, 0.53% copper, and 64 ppm molybdenum (1.09% copper equivalent). This included an intersection of 78.3 metres grading 2.13 g/t gold, 0.82% copper and 126 ppm molybdenum (2.24% copper equivalent) between 2258 and 2336.3 metres downhole. In addition, this also included a sub-interval of 16.3 metres grading 4.70 g/t gold, 1.56% copper and 168 ppm molybdenum (4.64% copper equivalent).

Visit www.ivanhoemines.com for pictures of the drill core and maps and sections of the new discovery.

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