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Russell Mountain is a 
summit
A summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. The topographic terms acme, apex, peak (mountain peak), and zenith are synonymous.
The term (mountain top) is generally used only for ...
in Iron County in the U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...
of Missouri
Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it border ...
. The mountain lies just east of Taum Sauk Mountain
Taum Sauk Mountain in the Saint Francois Mountains is the highest natural point in the U.S. state of Missouri at 1,772 feet (540 m).
The topography of Taum Sauk is that of an elongated ridge with a NNW-SSE orientation rather than a peak.
Des ...
and Missouri Route CC
A supplemental route is a state secondary road in the U.S. state of Missouri
Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. ...
provides access to the two peaks from combined Missouri routes 21 and 72 to the east. The town of Ironton is about six miles to the northeast. The Tom Sauk Trail traverses the Russell Mountain ridge.
Russell Mountain most likely has the name of Giles Russell, a businessperson in the local mining industry.
References
Mountains of Iron County, Missouri Mountains of Missouri {{IronCountyMO-geo-stub