A $6.7 billion Chinese mega mine coal project bid adjacent to the Adani venture in Queensland's has been abandoned in the Galilee Basin.

The proposed China Stone open-cut and underground thermal coal mine was planned to be built 300 kilometres west of Mackay, promising more than 3,000 jobs.

It would be the closest mine to Adani's Carmichael coal project, with the sites just 30 kilometres apart.