Black Oak Minerals Limited, formerly Southern Cross Goldfields Limited, is an Australia-based mining and exploration company. It is engaged in the mineral exploration and development in Australia. Its project portfolio includes Mt Boppy Gold Project, Wonawinta Silver Project, Sandstone Gold Project and Marda gold project. The Marda Gold Project is located near Southern Cross in Western Australia. Its Manuka Silver Project with its associated Mt Boppy Gold Project is located in central New South Wales. The Manuka Silver Project has approximately 60 million ounce silver mineral resources and a 9 million ounce silver ore reserve. The Company operates through the exploitation of minerals in Australia segment.