Ramelius Resources is trading at A$3.69, up 10.15%, after reports it engaged Barrenjoey to pursue Northern Star’s Carosue Dam mine. - The operation is reportedly valued at A$800 million and produces about 240,000 ounces of gold annually. - The acquisition reports are the clearest company-specific catalyst identified; supplied sector context is supportive but less directly explanatory. - An ASX announcement listing shows no acquisition announcement among the latest company filings.