SI6 Metals Limited, together with its subsidiaries, engages in the acquisition, exploration, and development of mineral resources in Australia and Botswana. The company primarily explores for nickel, copper, cobalt, gold, silver, platinum group, and rare earth elements. It holds 100% interest in the Monument Gold Project located in Western Australia. In addition, the company holds interests in Maibele Base Metal project located in Botswana, as well as owns an option to acquire 50% interest in the joint venture of 10 licenses covering 17,800 hectares located in Brazil. The company was formerly known as Six Sigma Metals Limited and changed its name to SI6 Metals Limited in December 2020. SI6 Metals Limited was incorporated in 2007 and is based in Nedlands, Australia.