If developed, the $2.4 billion Jadar lithium project in Western Serbia could cover 90% of Europe's current lithium needs.
Vedanta is joining a slew of Indian companies tapping stock investors amid surging valuations and increasing demand for equity investments in the country.
Environmental campaigners are challenging the approval of a coking coal mine in northwest England.
Portugal already has the largest copper mine in the European Union, operated by Lundin Mining.