Yellow Cat Uranium holds a mining concession covering approximately 25,000 hectares (about 60,000 acres) in Amambay, eastern Paraguay. It is also applying for further concessions in the same area.

Yellow Cat Uranium’s current concession is located on the western end of the Paraná Basin, which also hosts the Figueira uranium deposit in Brazil. The area is underlain by Upper Permian to Carboniferous continental sedimentary rocks, and is known
for uranium occurrences, such as the San Pedro, Santa Barbara, Yarati-í and San Antonio occurrences.

Between 1976 and 1983, the region was explored extensively by Anschutz Corporation. Uranium mineralization was intersected in drill holes ranging from 0.115% U3O8 over 10.2 m to 0.351% U3O8 over 0.3 m in sandstones and siltstones. In 1983, work was suspended due to the slump of the price of uranium.