Australia's Greens Party wants the Ranger uranium mine located in the country's Kakadu National Park closed permanently, saying the mine poses a significant threat to the world heritage listed site.

The mine, located in the country's Northern Territory and operated by Energy Resources of Australia Ltd (ERA.AU), has been closed since January as heavy rains threatened a spillage of toxins from a water storage facility. That closure had been extended until late July.

Mining operations at the Ranger open pit mine are already scheduled to cease by the end of 2012, but the Greens want than plan sped up and for the company to drop its intention for acid leach processing.

"ERA should abandon this plan and close the mine," Senator Scott Ludlam, Greens nuclear energy spokesman said in a statement.