A New Caledonian group, which is against the latest nickel mining project, has called for renewed protests at the end of the month.
The group says it cannot accept that the resources at Prony are being given to the Canadian Inco company, which is about to build a new nickel smelter at Goro.
It has accused the ruling anti independence RPCR party of giving a precious resource away for free and wants a court to cancel the deal.
The news agency, AFP, says it also wants the court to determine how the arrangement with Inco was reached.
The group, known as the CDMPP, is made up of the territory's customary senate, the pro independence FLNKS movement and environmentalists.
At the end of last month, about four thousand people took part in a rally organised by the group in Noumea to demonstrate against the venture.