"Mini Mini 4: December 1971" exemplifies Patrick Heron's characteristic approach to color field abstraction, featuring bold geometric shapes in vibrant hues arranged across the canvas. Created during the early 1970s, the work demonstrates Heron's commitment to exploring the expressive potential of color relationships and spatial composition without representational imagery. The painting's title references its modest scale, typical of Heron's prolific series works that allowed him to investigate variations in color and form with consistent intensity.