Our Company
Sigma is a Canadian company that has been producing environmentally sustainable battery-grade lithium concentrate on a pilot scale since 2018 and shipping high-purity “green & sustainable” 6% Li2O battery-grade lithium concentrate samples to some of the leading global cathode and battery producers for electric vehicles.
The company is in pre-construction (including the EPC and “contract-readiness” of core construction suppliers) of its larger-scale lithium concentration commercial production plant (the “Commercial Production Plant”). Based on the Feasibility Study Report the Commercial Production Plant will contemplate a capacity of 220,000 tonnes annually of battery-grade “green” lithium concentrate and Sigma will be amongst the lowest-cost producers of lithium concentrate globally. The Feasibility Study Report is being updated to include the development of the Project’s second deposit, contemplating production at the rate of 440,000 tonnes per annum (Phase 2 of the Project).
To secure a leading position supplying the clean mobility and green energy storage value chain, Sigma has adhered to the highest standards of environmental practices in line with its core values and mission since starting activities in 2012. Sigma’s production process is powered by hydroelectricity and the Company utilizes state-of-the-art dry-stacking tailings management and water-recycling techniques in its beneficiation process. Its corporate mission is to execute its strategy while embracing strict ESG principles. Sigma’s shareholders include some of the largest ESG-focused institutional investors in the world.
Sigma Value Proposition

Green Mining
Lithium is the answer to the future of clean energy and will have a significant role in reducing the global carbon footprint and dependence on fossil fuels. Backed by major green fund investors, Sigma operates a truly green open-cast low-risk mining operation that is focused on the sustainable management of resources.
As part of this, we are conducting an environmental impact study to develop a clean, safe and modern industrial-scale operation in the Vale do Jequitinhonha, Minas Gerais state, Brazil, that will adhere to best green mining practices.
Local Community
Sigma is developing an industrial-scale green mining operation in the Vale do Jequitinhonha, Minas Gerais state, Brazil. The project will bring direct and indirect jobs to the local community and contribute to its economic development. Environmentally, we will adhere to best green mining practices and contribute to a cleaner and greener future for the community and Brazil.

The mines are located in the Vale de Jequitinhonha region between the cities of Araçuaí and Itinga.
Clean Energy
Lithium will substitute fossil fuels in vehicles, make renewable energy such as wind and solar sustainable and underpin the future of clean energy.
Sigma was created by green investors to find significant lithium deposits and contribute to the global lithium battery value chain to help reduce pollution. Brazil, for example, has the third-and sixth-largest bus and car fleets respectively in the world and consequently some of the most polluted cities globally.
It is Sigma’s goal to become a key building block toward the manufacture of lithium batteries in Brazil, changing the future of industry and power storage in this country, contributing to a cleaner Brazil.
The Project
Sigma is developing a world-class industrial-scale hard-rock lithium project. The significant deposits in Brazil can be counted among some of the highest-grade spodumene pegmatites in the world.
The open-cast low-risk mining operation is a story six years in the making thanks to an international team of expert geologists and miners, who spent two years searching for the right high-grade lithium mine before buying a concession in Brazil and investing a further four years in exploring and mapping the resources at the Vale de Jequitinhonha site in the state of Minas Gerais.
Sigma is focused on 10 high-grade hard-rock lithium pegmatites, nine of which were past-producing lithium mines. Sigma is developing its first industrial-scale lithium mine at the historical Xuxa mine.
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