Independent engineering company RPA prepared the PEA, which concluded that the project should be advanced to the pre-feasibility stage.
The PEA indicated open-pit operation with mine life of 22 years based on less than 50% of the indicated and inferred mineral resources.
It proposed an open-pit mine and process facility to produce 30,000 tonnes of graphite per year with price of purified graphite at $7,500 per tonne and operating costs of $2,046 per tonne with a margin of $5,454 per tonne.
The PEA included total LOM gross revenue of $4.8bn and an after-tax cash average annual cash flow of $110m.
Commenting on positive PEA results, Zenyatta president & CEO Aubrey Eveleigh said: "This is a very important milestone for Zenyatta that started with the discovery of a rare graphite deposit in 2011 and has now gained global recognition for its unique purity and crystallinity.
"Zenyatta’s early stage study has resulted in extremely encouraging economics that will support discussions with potential strategic partners and financiers."
