

Up to 2,181 channel samples at Gasagwe and 452 channel samples at Murambi South were collected during drilling. Core drilling of approximately 1.4km confirmed the geological and structural complexity at the Kiyenzi target which exposed REE mineralised breccias. Rainbow initiated diamond drilling at the Gasagwe deposit and the Kiyenzi target in February 2018.
RARE EARTH COMPANY TRIAL
It conducted brownfields exploration and identified for trial mining at three sites including Kiyenzi, Murambi South, and Gomvyi Centre.

Rainbow’s exploration activities carried out between 20 included mapping of geological traverses, and geochemical and geophysical orientation surveys. They have been shown to extend to depths approximately 25m. The veins have been observed to extend for tens of metres in length with the longest being more than 80m. The mineral veins outcrop at the surface over 39km 2 of the mining permit area. The rare earth elements (REE) mineralisation is found in a network of discrete and narrow veins and veinlets consisting of bastnaesite and/or monazite with thickness from few centimetres to few tens of centimetres. The main rivers in the project area are the Mugere and the Karonge.

The project area lies at an altitude of 2,000m above mean sea level (msl) on the eastern escarpment of the Lake Tanganyika Graben within a rugged topography with deep V-shaped valleys. The site is located 20km south-southeast of Bujumbura, in western Burundi, East Africa, and it is well-connected by road to Dar es Salaam, Tanzania and Mombasa, Kenya. The Gakara rare earth project, spread over an area of 135km², is located within the northeast-trending Kibaran Fold Belt, a highly deformed sequence of Mesoproterozoic granites, granitoids and amphibolite-greenschist facies metasedimentary and metavolcanic rocks, referred to as the Burundi Supergroup.
