The ROYAL TINTO showing is located approximately 2.5 kilometres north-northwest of Mount Franklin.
The showing consists of magnetite and pyrite as replacements along a shear zone in monzonite of the Eocene Coryell Intrusions. The shear trends to the northwest, parallel to a syenite contact about 150 metres to the southwest. This syenite, and also a pyroxenite nearby, are part of the Eocene Coryell Intrusions.
In 1911, the ROYAL TINTO claim was owned by J. Holmes. In 1914, the recorded owner was H. Eyre.
In 1964, Franklin Mines Ltd. acquired much of the Franklin camp, including the ROYAL TINTO area; however no work on the ROYAL TINTO showing was recorded.
In 1986-87, Longreach Resources Ltd. and Placer Dome Inc. carried out a major exploration program for platinum in the Franklin camp. In 1986, they drilled 5 diamond drillholes on the adjacent BUFFALO (082ENE008) showing. There is no record of any work being carried out on the ROYAL TINTO showing.