A U.S. District Court rejected Brazilian mining company Vale SA's bid to dismiss a lawsuit alleging it conspired with Israeli billionaire Benjamin Steinmetz to take a West African mine away from rival Rio Tinto PLC.

Rio Tinto's civil suit alleges that Vale, Mr. Steinmetz and his company BSG Resources Ltd. as well as related entities conspired to illegally obtain the Anglo-Australian company's mining rights in Guinea.

U.S. Southern District of New York Judge Richard M. Berman also dismissed rejected Vale's argument that the suit should be brought in an English court.

Judge Berman said Rio Tinto's choice of a U.S. court for the legal proceeding is justified based on the plaintiff's likelihood of obtaining jurisdiction over all of the defendants, while England isn't an adequate alternative forum.

Vale and Rio Tinto weren't immediately available for comment. In April, Vale said it condemned the use of "corrupt practices" and noted that a Guinean government probe found no involvement in "fraudulent conduct" on its part.

"We are confident we will succeed in dismissing this meritless claim on other grounds in the new year," a BSG Resources spokesperson said Wednesday.

The civil lawsuit, which was filed in April, alleges that Vale and its former partner Mr. Steinmetz worked together to take Rio Tinto's rights to the Simandou iron-ore deposit through corruption. In it, plaintiff Rio Tinto says BSG Resources bribed officials in the Guinean government to revoke half of its Simandou concession and then partnered with Vale, which "knew or should have known" about the payments. Mr. Steinmetz and BSG Resources are also named as defendants in the suit.

A week after the lawsuit was filed, a Guinean government investigation concluded that Mr. Steinmetz's BSG Resources had obtained rights to Simandou by improper means. As a consequence of the investigation, Guinea revoked the concession from BSG Resources and Vale.

Rio Tinto says it lost billions of dollars in assets and investments made before its Simandou rights were revoked and claims it is entitled to treble damages.

Paul Kiernan and Ira Iosebashvili contributed to this article

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