Authier to cost C$66m to develop

A prefeasibility study into the Authier lithium project, in Canada, has estimated that the project will require a capital investment of C$66-million to deliver some 99 000 t/y of spodumene. ASX-listed Sayona Mining said on Thursday that based on a maiden ore reserve of 10.2-million tonnes, at 1.02% lithium oxide, the project is expected to have a pre-tax net present value of C$140-million and a pre-tax internal rate of return of 39%.