The Greenstone project, owned jointly by Equinox Gold Corp. (60%) and Orion Mine Finance (40%), is centred on a group of high-grade, underground past-producing gold mines in the Geraldton-Beardmore district of western Ontario, Canada. The property is located approximately 275 km northeast of the city of Thunder Bay and approximately 4 km south of the town of Geraldton.

A Feasibility Study was released in December 2020 outlining the design of an open-pit mine producing more than 5 Moz over an initial 14-year mine life. Full-scale construction began at the project in October 2021, with first gold pour currently targeted for the first half of 2024.