Engineering & Mining Journal

NOV 2017

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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Page 27 of 83

REGIONAL NEWS - EXPLORATION ROUNDUP 26 E&MJ • NOVEMBER 2017 Ivanhoe Continues to Add Resources at Kamoa-Kakula Project in DRC Ivanhoe Mines has reported positive re- sults from ongoing exploration drilling at the Kabuli West area of its Kamoa-Kakula copper project near the mining center of Kolwezi in the Democratic Republic of the Congo (DRC). An area 2 kilometers (km) by 1 km has been drilled off at Kaul West on an approximate 300-meter (m) grid pattern, while drilling in the "saddle" area between Kabuli West and Kaul is be- ing in-filled in preparation for an updated resource estimate. Ivanhoe's geologists now anticipate that ongoing drilling will establish that the Kabuli and Kakula West deposits form a continuous mineral resource area, with sufficient drilling by the end of October to allow the definition of resources over an area encompassing the entire strike length of the Kakula discovery, which now extends to at least 12 km. This would represent an increase of approximately 60% in the strike length that will be used to calculate the new resource estimate, as compared to the 7.7-km strike length covered by the May 2017 Kakula resource estimate. Ivan- hoe expects the updated resource estimate to be finalized by year-end 2017. In response to its exploration success at Kakula, Ivanhoe has accelerated its exploration program. Fourteen rigs are now drilling on the Kamoa-Kakula project area: 11 in the Kakula discovery area, one in the Kamoa Nord target area, one to the south of Kakula exploring the Mulamena target, and one conducting sterilization drilling in areas planned for mine infra- structure development. Of the 11 rigs drilling at the Kakula discovery, five are conducting exploration and in-fill drilling at Kakula West, three are drilling in the saddle area between the Kakula resource area and Kakula West, two are conducting in-fill drilling in the Kakula resource area, and one is continu- ing to test the southeastern extension of the Kakula mineralized trend. The Kakula deposit is a gently dipping blanket of thick chalcocite-rich copper mineralization. Initial mine development is planned to begin in a flat, near-surface zone, which at a 3% cut-off is between 7.1 m and 11.7 m thick with copper grades of between 8.11% and 10.35% along the deposit's axis. ( Exploration Briefs Archer Exploration has reported discovery of two large copper targets at its 100% owned North Broken Hill project approx- imately 20 km north of Broken Hill, New South Wales, Australia. The new pros- pects were discovered during the com- pany's comprehensive, cobalt-focused reconnaissance rock chip sampling pro- gram, which is ongoing. The exploration program has been suc- cessful in identifying significant cobalt mineralization. While undertaking the co- balt-focused work, Archer geologists also identified significant surface copper min- eralization, most of which has never been mapped or recorded. In almost all instanc- es, the copper mineralized outcrop disap- pears under cover, meaning that the overall dimensions of the mineralization remain unknown. Some of these areas have also been identified as prospective for cobalt. The ongoing rock chip sampling pro- gram is showing to be effective in discov- ering new copper and cobalt and other anomalies within the larger project area. These anomalies have mostly been dis- covered in areas where there has been no previous drilling for cobalt, copper and as- sociated mineralization. Only half of the company's tenements have so far been sampled. Archer will continue the region- al rock chip sampling across the rest of the project area, and the data will be inte- grated with geophysical data to prioritize and rank targets for future drill testing. ( Ramelius Resources has signed an ex- ploration farm-in and joint-venture agree- ment with Newmont Mining covering Newmont's highly prospective South Monitor land package 40 km southeast of Tonopah, Nevada. Ramelius has the right to earn up to 80% equity in the South Monitor gold project by spending $8 mil- lion over eight years via staged earn-ins. Ramelius must spend $250,000 within the first year before it may withdraw, and Newmont retains the right to claw back to 70% equity in the project. Ramelius plans to infill drill test around significant historical disseminated low-sul- phidation epithermal gold intersections at South Monitor to confirm the mineraliza- tion continuity and generate a JORC-com- pliant resource, as well as to test for po- tential high-grade feeder structures below encouraging historical gold intersections. Better historical gold intersections worthy of follow-up drill testing include 34 m at 3.7 g/mt of gold, 17 m at 3 g/mt of gold, and 34 m at 1.2 g/mt of gold. Ramelius is an Australian company headquartered in Perth, Western Austra- lia. It owns 100% of the Mount Magnet gold mine and associated processing plant in the Murchison region of Western Australia. Its agreement with Newmont complements its proximal Jupiter farm- in and joint-venture agreement with Re- naissance Gold, where it may earn up to a 75% interest in the Jupiter gold project by spending $3 million within five years. ( Tsodilo Resources has initiated a large-di- ameter drilling program on its whol- ly-owned BK16 kimberlite project in the Orapa kimberlite field in Botswana. The di- amondiferous BK16 pipe is approximately 6 ha in size at surface and is known to con- tain rare and valuable Type IIa diamonds. The large-diameter drilling is planned to include 14 holes drilled to a cumula- tive depth of a little more than 3,000 m. Approximately 2,000 mt of bulk samples will be extracted for pilot-plant testing. The program calls for drilling 24-in.-di - ameter holes varying in depth from 96 m to 366 m, depending on the kimberlite intersections. The drilling will sample the various kim- berlite phases in the BK16 pipe every 12 m, resulting in 237 samples. The samples will be treated through Tsodilo's 10-mt/h dense media separation plant, which is po- sitioned just outside Lethakane, Botswana. (

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