Exploration

Kamituga

At the Kamituga project, Banro has discovered broad zones of low-grade oxide which has been the exploration focus here to date. In 2019, the Company plans to further explore for high-grade underground resources.

  • Early Stage Exploration Project

    Exploration at Kamituga has been limited to focusing on new oxide target generation activities towards the south-west and north-western parts of the project using low-cost auger drilling, surface mapping and regional BLEG sampling. In 2019 we plan to start exploration for high-grade underground resources at several promising targets. Throughout this process, the open pit lower-grade oxide will be developed. The main exploration objectives in 2019 will be:

    • Developing additional drill targets through geophysics and auger drilling

    • Evaluating high grade resource potential

      • 2019 – 6,400m drill program planned utilizing a man portable diamond drill

    • Develop Mineral Resources on high grade targets

      • 2019 – 3,200m drill program planned utilizing a man portable diamond drill

  • Mineralization

    Primary gold mineralization at Kamituga is hosted within high grade, shallow dipping, sheeted quartz veins and stockworks in sericite schists and amphibolites. Banro’s independent geological consultant, Steffen, Robertson and Kirsten (UK) Ltd. (SRK), noted in its February 2005 technical report: “…there is much evidence to support the wide-scale occurrence of gold mineralization. Most of the work to date has been confined to the area surrounding the Mobale Mine and very little appears to have been conducted throughout the remaining area of the concession.”

  • History of the Kamituga Region

    Gold was first reported in the Kamituga region during the early 1920s with the discovery of alluvial gold in the Luliaba, Mobale, Kahushimira, Kamakundu and Idoka rivers. Commercial alluvial mining commenced in 1924. Exploration during the 1930s led to the discovery of numerous high-grade quartz veins, with hard rock mining commencing in 1937 at the Mobale underground operation. During the period of active mining at Kamituga, 29 gold nuggets weighing over 1 kg each were found in alluvial gravels. At the closure of the Kamituga operations in 1996, approximately 1.5 million ounces of gold had been produced from alluvial and hard rock mining. Early exploration in 2011 and 2012 consisted of reviewing and assessing the historical data, stream sediment sampling, gridding, geological mapping, soil, trench, adit sampling, and auger drilling. In addition, a “desktop analysis” of the property has examined historical geological data and the results of LIDAR, aeromagnetic and radiometric surveys of the property conducted in 2007. Later exploration activities have focused on regional targets located outside the old mine workings to identify additional zones of oxide mineralization; and on the bulk tonnage potential in the vicinity of the Little Mobale open pit, where disseminated sulphide wall rock mineralization may have been neglected in the past when the mining focus was on high grade quartz veins and stockworks.